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Kevin Hoskins INTRODUCTION This application note features 10-, 12-bit data acquisition components various circuit configurations. circuits include battery monitoring, temperature sensing, isolated serial interfaces, microprocessor microcontroller serial parallel interfaces. Also included voltage reference circuits (Application Note contains more voltage reference circuits). Additional circuit information located information references listed Circuit Index. Each information reference refers either application note (example: AN42 Application Note 42), data sheet (example: LTC®1292 LTC1292 Data Sheet), design note (example: DN66 Design Note 66).
registered trademarks trademark Linear Technology Corporation.
CIRCUIT INDEX
FIGURE TITLE FIGURE General Analog-to-Digital Application Circuits Two-Quadrant 150kHz Bandwidth Analog Multiplier Figure Infinite Hold-Time Sample-and-Hold (tACQ 240ns) Figure Four-Quadrant 250kHz Bandwidth Analog Multiplier Figure Demodulating Signal Using Undersampling Figure Complete 100ps Resolution Time Circuit with "Bow" Correction Figure Single 12-Bit Temperature Control System with Shutdown Figure Weight Scale Figure Auto-Ranging 8-Channel 12-Bit Data Acquisition System with Shutdown Figure PAGE AN62-3 AN62-3 AN62-4 AN62-4 AN62-5 AN62-6 AN62-6 AN62-7 INFORMATION REFERENCE/SOURCE LTC1099 LTC1099 LTC1257 LTC1282 LTC1257 LTC1091/2/3/4 LTC1257
Analog-to-Digital Battery Monitoring Application Circuits Micropower Battery Voltage Monitor Figure AN62-8 LTC1096/8 Battery Current Monitor Draws Only 70µA Figure AN62-8 LTC1096/8 LTC1297 Data Acquisition System Micropower Battery Current Monitor Figure AN62-9 Temperature Sensing Conversion Current Output Silicon Sensor Thermometer Driving 10-Bit Analog-to-Digital Converter Covers 55°C 125°C with 0.2°C Resolution Thermistor-Based Temperature Measurement System Covers 20°C 40°C 100°C with 0.25°C Accuracy Digitally Linearized Platinum Signal Conditioner Furnace Exhaust Temperature Monitor Covers 500°C Supply Detection Isolated Interfaces Floating Analog-to-Digital Conversion System Powered Capacitor Charge Pump Micropower Serial 10-Bit Data Acquisition System with 500V Opto-Isolated Communication Opto-Isolated Temperature Monitor Battery-Powered Digital Thermometer Transmits Over RF-Link LTC1092 10-Bit Analog-to-Digital Converter Receives Power Transmits Data Over Transformer-Isolated Lines
Figure AN62-9 LTC1091/2/3/4 Figure AN62-10 LTC1091/2/3/4 Figure AN62-10 LTC1091/2/3/4 Figure AN62-11 LTC1091/2/3/4/DS Figure AN62-11 LTC1096/8 Figure AN62-12 LTC1091/2/3/4 Figure AN62-13 LTC1292 Figure AN62-13 Figure AN62-14 DN19
AN62-1
Application Note
FIGURE TITLE FIGURE PAGE INFORMATION REFERENCE/SOURCE
Miscellaneous Circuits LTC1390s Cascadable Serially Programmed 8-Channel Multiplexers Provide Single Channel LTC1096 with Analog Inputs Small 12-Bit Differential-Input LTC1292 Data Acquisition System Occupies Only 0.35IN2 Including Reference Power Supply Bypass Components 12-Bit LTC1296 Data Acquisition System Strain Gauge with Bridge-DriverPower Shutdown LTC1282 Analog-to-Digital Converter with Full-Scale Adjust Ultra-Low Full-Scale-Drift LTC1282 Analog-to-Digital Converter Ultra-Low Full-Scale-Drift LTC1273 Analog-to-Digital Converter "Tiny" LTC1286 12-Bit Differential-Input Data Acquisition System Package) "Tiny" LT1019-2.5 Reference Occupies Only 0.47IN2 Including Reference Power Supply Bypass Components Hardware Microcontroller Interfaces LTC1296 Microcontroller Hardware Serial Interface LTC1090 Intel 8051 Microcontroller Hardware Serial Interface LTC1090 Motorola MC68HC05C4 Microcontroller Hardware Serial Interface. LTC1090 Hitachi HD63705 Microcontroller Hardware Serial Interace LTC1091 Intel 8051 Microcontroller Hardware Serial Interface LTC1091 Motorola MC68HC05C4 Microcontroller Hardware Serial Interface. LTC1095 Intel 8051 Microcontroller Hardware Serial Interace LTC1095 Motorola MC68HC05C4 Microcontroller Hardware Serial Interace Multiple LTC1095s Sharing Three-Wire Serial Interface Multiple LTC1290s Sharing Three-Wire Serial Interface Multiple LTC1094s Sharing Three-Wire Serial Interface Interfacing LTC1196 Altera EPM5064 SNEAK-A-BIT Circuit LTC1090: 11-Bit Resolution from 10-Bit
Figure AN62-15 Figure AN62-15 LTC1292 Figure Figure Figure Figure AN62-16 LTC1293/4/6 AN62-16 LTC1282 AN62-16 LTC1282 AN62-16
Figure AN62-17 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure AN62-17 LTC1293/4/6 AN62-17 LTC1090 AN62-17 LTC1090 AN62-17 LTC1090 AN62-18 LTC1091/2/3/4 AN62-18 LTC1091/2/3/4 AN62-18 LTC1095 AN62-18 LTC1095 AN62-18 LTC1095 AN62-19 LTC1290 AN62-19 LTC1091/2/3/4 AN62-19 LTC1196/8 AN62-20 LTC1090
Serial Interface Circuits LTC1094 Analog-to-Digital Converter RS232 Serial Interface Using LT1180A Dual Driver/Receiver Figure AN62-20 LTC1290 Serial Port Figure AN62-21 Parallel Interface Circuits LTC1272/LTC1273/LTC1275/LTC1276 8085A/Z80 Microprocessor Hardware Parallel Interface LTC1272/LTC1273/LTC1275/LTC1276 MC68000 Microprocessor Hardware Parallel Interface LTC1282 TMS320C25 Processor Parallel Interface LTC1272/LTC1273/LTC1275/LTC1276 TMS32010 Processor Parallel Interface LTC1278 TMS320C25 Processor Parallel Interface Reference Circuits LT1034-2.5 2.5V Voltage Reference Battery-Powered LT1004-2.5 2.5V Voltage Reference LT1431Z 2.5V Voltage Reference (3-Pin Package) LT1431 2.5V Voltage Reference (8-Pin Package) LT1431Z Voltage Reference (8-Pin Package) LT1027 12-Bit Accurate Voltage Reference Supplying Input Voltages LTC1290's VREF Pins
Figure AN62-21 LTC1272/LTC1273/5/6 Figure AN62-21 LTC1272/LTC1273/5/6 Figure AN62-22 LTC1282 Figure AN62-22 LTC1272/LTC1273/5/6 Figure AN62-22 Figure Figure Figure Figure Figure AN62-22 LT1034 AN62-22 LT1004 AN62-23 LT1431 AN62-23 LT1431 AN62-23 LT1431
Figure AN62-23 LT1027
Adjustable References LT1021-5 Adjustable Voltage Reference Figure AN62-23 LT1021 LT1009 2.5V Voltage Reference with Trim Range Figure AN62-23 LT1009
AN62-2
Application Note
FIGURE TITLE FIGURE PAGE Appendices Converter Selection Guides Appendix AN62-24 Voltage Reference Selection Guide Appendix AN62-28 INFORMATION REFERENCE/SOURCE
GENERAL ANALOG-TO-DIGITAL APPLICATION CIRCUITS
(VIN) ANALOG INPUT 3MHZ 0.1µF 74LS90 0.1µF 300kHz LTC1099 MODE (VIN2) +10V ANALOG INPUT 1208 0.1µF 0.1µF DIGITAL GROUND AGND 5VREF
AN62
VREF BYTE1/ BYTE2 XFER DI10 DI11 IOUT2 IOUT1 10pF
10µF
WR/RDY
4.7µF
LT1019-5
OFFSET NULL OUTPUT
LT1122
ANALOG GROUND
15VIN
-15V
Figure Two-Quadrant 150kHz Bandwidth Analog Multiplier
5.000V
AM6012 2.5k
LTC1099
LT1122 VOUT
SAMPLE
HOLD
-15V
AN62
Figure Infinite Hold Time Sample-and-Hold (tACQ 240ns)
AN62-3
Application Note
VIN1 -10V VIN2 10µF SAMPLE CLOCK (fSAMPLE 500kHz) 0.1µF VREF CONVST BUSY SHDN LTC1278 AVDD AGND DVDD DGND VREF IOUT1 IOUT2 DAC1208 XFER BYTE1/BYTE2 0.1µF
AN62
0.1µF
LT1122 VOUT
0.1µF -15V
0.1µF
0.1µF 0.1µF
POSITIVE ANALOG SUPPLY VOLTAGE NEGATIVE ANALOG SUPPLY VOLTAGE DIGITAL SUPPLY VOLTAGE
ANALOG GROUND DIGITAL GROUND
Figure Four-Quadrant 250kHz Bandwidth Analog Multiplier
227.5kHz SAMPLE RATE 455kHz SIGNAL MODULATED 6dB, 5kHz SINEWAVE
455kHz AMPLITUDE MODULATED INPUT
LTC1275
1V/DIV
DATA OUTPUT DEMODULATED 5kHz OUTPUT SINEWAVE
AN62 F04a*
1V/DIV
5µs/DIV
AN62 F04b
Figure Demodulating Signal Using Undersampling
AN62-4
Application Note
3.3V
1N457 2N5771 LM134 45.3 74HC03 1N457 45.3 3.3V START 74HC74 1N4148 3.3V STOP 100k 0.001µF 1N4148 100pF 250pF POLYSTYRENE 200k 2N2369 2N2369
10µF
10µF REFOUT LTC1282 BUSY 12-BIT DATA OUTPUT
DATA LATCH SIGNAL
3.3V 10pF
AN62 F05a
TIME LINEARITY ERROR (ns)
-0.2 -0.4 -0.6 -0.8 -1.0 TIME (ns)
AN62 F05b
START STOP
5V/DIV 5V/DIV
RAMP
500mV/DIV
50ns/DIV PHOTO SHOWS START, STOP RAMP WAVEFORMS HALF SCALE, 200ns INPUT. RAMP REACHES 2.5V 400ns FULL-SCALE INPUT. 4096 CODES SPREAD OVER 400ns EQUATE 100ps LSB.
AN62 F05c
Figure Complete 100ps Resolution Time Circuit with "Bow" Correction
AN62-5
Application Note
100k 2N3906 0.1µF
10µF DOUT LTC1297 POWER DOWN DATA LOAD
LT1025A COMM
VREF
LTC1050
100k
VREF
CONTROL OUTPUT
VOUT
LTC1257 LOAD
DOUT
AN62
Figure Single 12-Bit Temperature Control System with Shutdown
MOTOR DRIVER MC68HC05 MISO
RED, YELLOW
3220 SCALE PLATFORM 4.7µF
GREEN
5.23k
LT1013
2.15M
LTC1092 DOUT LT1013
WHITE
9.09k
2.15M
VIOLET BLACK, BLUE
4.75k
4.7µF
AN62
Figure Weight Scale
AN62-6
Application Note
22µF
ANALOG INPUT CHANNELS
LTC1296 DOUT
2N3906
74HC04
0.1µF
DAC1 LTC1257
VREF LOAD DOUT
VOUT 0.1µF
VOUT 0.1µF
VREF
DAC2 LTC1257 LOAD DOUT
NOTE: SETS LTC1296's FULL-SCALE ZERO-SCALE MAGNITUDES WITH CODE APPLIED DAC1 DAC2, RESPECTIVELY.
AN62
Figure Auto-Ranging 8-Channel 12-Bit Data Acquisition System with Shutdown
AN62-7
Application Note
ANALOG-TO-DIGITAL BATTERY MONITORING APPLICATION CIRCUITS
BATTERY MONITOR INPUT 266k 0.1µF
0.1µF 100k LT1004-1.2 VREF LTC1096
CLOCK DOUT
AN62
Figure Micropower Battery Voltage Monitor
0.1µF
0.1µF 73.2k 750k 470k
24.9k FULL SCALE 0.2A FULL SCALE
LT1178
LTC1096
DOUT VREF 750k
LT1178 BATTERY
LT1004-1.2 470k
AN62
Figure Battery Current Monitor Draws Only 70µA
AN62-8
Application Note
0.33µF
LT1121
SHDN 1N4148 100k
510k
0.1µF
470k 0.1µF
LT1004-2.5
Figure LTC1297 Data Acquisition System Micropower Battery Current Monitor
TEMPERATURE SENSING CONVERSION
4.7µF LM134 OTHER 1µA/°K SENSOR LTC1092 0.1µF 11.5k DOUT VREF SCLK
LT1019-2.5
10µF
AN62
Figure Current Output Silicon Sensor Thermometer Driving 10-Bit Analog-to-Digital Converter Covers -55°C 125°C with 0.2°C Resolution
0.005 FULL SCALE
LTC1047
750k LTC1297 DOUT VREF BATTERY
22µF TANT
LTC1047
AN62
AN62-9
Application Note
2N3904
±10% ±10% 4.7µV
44201 100°C
ACLK SCLK
44201 25°C 20°C 40°C
LTC1090 AGND 1.491k LT1006
2954 4.562k
DGND
*YSI 44007 44034
AN62
Figure Thermistor-Based Temperature Measurement System Covers 20°C 40°C 100°C with 0.25°C Accuracy
5VOUT LT1027
10µF 500k 400°C TRIM
12k*
12.5k*
RPLAT
LT1101
LT1006
LTC1294 DGND DVCC AVCC DOUT REF+ AGND
30.1k**
22µF TANTALUM
TO/FROM 68HC11 PROCESSOR
3.92M** TRW-IRC MAR-6 RESISTOR 0.1% FILM RESISTOR MICROCONTROLLER CODE, AN43, PAGE13 RPLAT ROSEMOUNT #118MF 500k TRIM
AN62
Figure Digitally Linearized Platinum Signal Conditioner
AN62-10
Application Note
0.1µF LT1019A-5 1N4148
10µF
TYPE
LT1025A COMMON
0.1µF
LTC1091A
DOUT
AN62
LTC1052
0.1µF
0.1% 3.4k
0.33µF 178k 0.1%
Figure Furnace Exhaust Temperature Monitor Covers 500°C Supply Detection
ISOLATED INTERFACES
CHARGE PUMP 0.001µF
1N5817 0.1µF VREF 0.022µF 100k LTC1096 LT1004-2.5
1N5817 5MHz
2N3904
47µF
4N28 100k
1N5817
DOUT
ANALOG INPUT
DATA 500k
VFLOAT
FLOATING SYSTEM
AN62
Figure Floating Analog-to-Digital Conversion System Powered Capacitor Charge Pump
AN62-11
Application Note
LT1021-5 VOUT TRIM 2M3906
4N28
2N3906 68HC05** MOSI
4N28
10µF* ANALOG INPUTS RANGE ADDITIONAL LTC1094s 5.1k
DGND LTC1094
DVCC AVCC DOUT
4N28
AGND
4N28
5.1k SOLID TANTALUM MC68HC05 CODE AVAILABLE FROM LINEAR TECHNOLOGY 2N3904 4N28
MISO
AN62
ISOLATION BARRIER
Figure Micropower Serial 10-Bit Data Acquisition System with 500V Opto-Isolated Communication
AN62-12
Application Note
ISOLATED
22µF 0.1% 3.4k 0.1% 178k 0.1% 0.33 1N4148 LT1019-2.5
1N4148 4N28
1N4148
500k
LT1025A TYPE LTC1292
DOUT VREF
100k
0.1µF
LTC1050
74C14 4N28
DATA
500°C TEMPERATURE RANGE
500k
AN62
Figure Opto-Isolated Temperature Monitor
LTC1096 VREF LT1004-1.2 45.3k 15.8k 30nH* 100k 5.1k 300MHz MRF501
AN62
74HC132 LM134 100k 300pF
0.22µF
MBR0540T1
13.5k CARRY 74HC161
DOUT
*TWO TURNS WIRE WRAPPED AROUND PENCIL
Figure Battery-Powered Digital Thermometer Transmits Over RF-Link
AN62-13
Application Note
74HC132 5.1k 2000pF LT1021-5 LTC1092 DOUT VREF 750pF RIPPLE CARRY 74HC161 ENABLE ENABLE LOAD 74HC04 39pF 100pF 1N4148 74HC04 100pF 74HC00 510pF 74HC00 74HC132 74HC04 74HC04 1N4148 1N4148 1N4148
74HC00
1N4148 PE-2229X* HP2810 74HC14 74HC74
100pF
LOAD DATA
REXT/ CEXT1 CLR2 CEXT1 74HC221 REXT/ CLR1 CEXT2 CEXT1
HP2810
1N4148 74HC164 74HC164 100pF
2N2905 2N3904
10µF
74HC14
PULSE ENGINEERING, INC. P.O. 12235 7250 CONVOY COURT DIEGO, 92112
PULSE WIDTH LOAD DATA PULSE WIDTH 10kHz
AN62
TIMING DIAGRAM SHOWING PULSE-WIDTH CODING TECHNIQUE CLOCK
DOUT
START
ENCODED OUTPUT
AN62 F20b
Figure LTC1092 10-Bit Analog-to-Digital Converter Receives Power Transmits Data Over Transformer-Isolated Lines
AN62-14
Application Note
MISCELLANEOUS CIRCUITS
LTC1390 DATA2 DATA1 OPTIONAL INPUT FILTER 0.1µF 0.1µF 0.1µF LTC1096 DOUT VREF
CH10 CH11 CH12 CH13 CH14 CH15 DATA
LTC1390
DATA2 DATA1
0.1µF
0.1µF
AN62
Figure LTC1390 Cascadable Serially Programmed 8-Channel Multiplexers Provide Single Channel LTC1096 with Analog Inputs
22µF TANTALUM
LTC1292 1N4148 DOUT VREF
MISO MC68HC11
DIFFERENTIAL INPUTS COMMON-MODE RANGE
LT1027
AN62
4.7µF TANTALUM
Figure Small 12-Bit Differential-Input LTC1292 Data Acquisition System Occupies Only 0.35IN2 Including Reference Power Supply Bypass Components
AN62-15
Application Note
5.1k 2N3906
LT1014
1.2M
74HC04
47µF
1.2M
STRAIN GAUGE BRIDGE
LTC1296 DOUT REF+
AN62
1N4148
AGND
THREE ADDITIONAL STRAIN GAUGE INPUTS ACCOMMODATED USING OTHER AMPLIFIERS LT1014
DGND
Figure 12-Bit LTC1296 Data Acquisition System Strain Gauge with Bridge-Driver-Power Shutdown
INPUT RANGE ±1.033VREF(OUT)
INPUT RANGE ±2.60V VOUT LT1019A-2.5 VREF LTC1282
LT1006
VREF(OUT) 1.25V 10µF
LTC1282 VREF
AGND
AN62
10µF AGND
AN62
Figure LTC1282 Analog-to-Digital Converter with Full-Scale Adjust
Figure Ultra-Low Full-Scale Drift LTC1282 Analog-to-Digital Converter
INPUT RANGE ±2.583V VOUT LT1019A-2.5 VREF LTC1273
10µF AGND
AN62
Figure Ultra-Low Full-Scale Drift LTC1273 Analog-to-Digital Converter
AN62-16
Application Note
0.1µF VREF LTC1286 DOUT CS/SHDN SERIAL DATA LINK
AN62
P1.4 0.1µF P1.3 P1.2 (e.g. 8051)
DIFFERENTIAL INPUTS COMMON-MODE RANGE
1.5M 100k
TRIM TEMP
HEATER
0.1µF *INTERNALLY CONNECTED; CONNECT EXTERNALLY
LT1019-2.5
Figure "Tiny" LTC1286 12-Bit Differential-Input Data Acquisition System Package) "Tiny" LT1019-2.5 Reference Occupies Only 0.47IN2 Including Reference Power Supply Bypass Components
HARDWARE MICROCONTROLLER INTERFACES
ANALOG INPUTS LTC1296 DOUT
AN62
DOUT ANALOG INPUTS LTC1090 SCLK ACLK
P1.1 P1.2 P1.3 P1.4
AN62
8051
Figure LTC1296 Microcontroller Hardware Serial Interface
Figure LTC1090* Intel 8051 Microcontroller Hardware Serial Interface
ANALOG INPUTS SCLK LTC1090 DOUT
MC68HC05C4 MOSI MISO
AN62
SCLK LTC1090 DOUT
HD63705
AN62
ANALOG INPUTS
Figure LTC1090* Motorola MC68HC05C4 Microcontroller Hardware Serial Interface
*Increase resolution from bits bits with compatible LTC1290.
Figure LTC1090* Hitachi HD63705 Microcontroller Hardware Serial Interface
AN62-17
Application Note
LTC1091 DOUT ADDRESS RESULT
AN62
P1.4 P1.3 8051 P1.2 LTC1091
SCLK DOUT
MC68HC05C4 MOSI MISO
AN62
Figure LTC1091* Intel 8051 Microcontroller Hardware Serial Interface
Figure LTC1091* Motorola MC68HC05C4 Microcontroller Hardware Serial Interface
LTC1095 DOUT ADDRESS RESULT
P1.4 P1.3 8051 P1.2
LTC1095 DOUT
AN62
MC68HC05C4 MOSI MISO
AN62
ANALOG INPUTS
ANALOG INPUTS
Figure LTC1095 Intel 8051 Microcontroller Hardware Serial Interface
Figure LTC1095 Motorola MC68HC05C4 Microcontroller Hardware Serial Interface
AN62
OUTPUT PORT SERIAL DATA
3-WIRE SERIAL INTERFACE OTHER PERIPHERALS LTC1095s LTC1095
LTC1095
LTC1095
CHANNELS
CHANNELS
CHANNELS
Figure Multiple LTC1095s Sharing Three-Wire Serial Interface
*Increase resolution from bits bits with compatible LTC1291.
AN62-18
Application Note
3-WIRE SERIAL INTERFACE OTHER PERIPHERALS LTC1290s
OUTPUT PORT SERIAL DATA
LTC1290
LTC1290
AN62
CHANNELS
CHANNELS
Figure Multiple LTC1290s Sharing Three-Wire Serial Interface
AN62
OUTPUT PORT SERIAL DATA
3-WIRE SERIAL INTERFACE OTHER PERIPHERALS LTC1094s LTC1094
LTC1094
LTC1094
CHANNELS
CHANNELS
CHANNELS
Figure Multiple LTC1094s* Sharing Three-Wire Serial Interface
8-BIT SHIFT REGISTER DATA 12-BIT COUNTER RESERVE PINS EPM5064: 4-8,15-20, 26-30 DATA B0-B7 B0-B7 LTC1196 DOUT VREF
EPM5064 DATA
9-13,
AN62
Figure Interfacing LTC1196 Altera EPM5064
*Increase resolution from bits bits with compatible LTC1294.
AN62-19
Application Note
LT1201-5
10µF 2MHz CLOCK
OTHER CHANNELS SNEAK-A-BIT INPUTS
ACLK SCLK MC68HC05C4 MOSI MISO
LTC1090 DOUT AGND 0.1µF
DGND
AN62
Figure SNEAK-A-BIT Circuit LTC1090: 11-Bit Resolution from 10-Bit
SERIAL INTERFACE CIRCUITS
10µF (NOTE 400k
200pF
2N3906 (NOTE
ANALOG INPUTS RANGE
LTC1094
LT1021-5
10µF
4.7µF
LT1180A
ON/OFF DATA CLOCK
1N752A 4.7µF
(NOTE
DATA
CLEAN ANALOG GROUND LOGIC GROUND
NOTE CURRENT LIMIT RESISTORS REMOVED INPUTS GUARANTEED EXCEED LT1094's SUPPLY VOLTAGES. NOTE DRIVER OUTPUTS PARALLEL GREATER CURRENT DRIVE. NOTE SELECT 4tCLOCK, MINIMIZE NOTE CONNECT CLEAN ANALOG GROUND LOGIC GROUND TOGETHER ONLY POINT.
AN62
Figure LTC1094 Analog-to-Digital Converter RS232 Serial Interface Using LT1180A Dual Driver/Receiver
AN62-20
Application Note
INPUT 7.2V 74C14 f0SC 300kHz 50pF 47µF VREF (UNREGULATED) LT1021-5
ANALOG INPUTS DGND LTC1290 ACLK SCLK DOUT AGND 100k
74C74
RS232 POWERED 150µF OPTION (LTC1090 ONLY)
COM1 INPUT STATUS REGISTER
Figure LTC1290 Serial Port
PARALLEL INTERFACE CIRCUITS
ADDRESS
MREQ 8085A WAIT
ADDRESS DECODE BUSY
DATA
D0/8
ANALOG FRONT-END CIRCUITRY ADDITIONAL PINS OMITTED CLARITY
Figure LTC1272/LTC1273/LTC1275/LTC1276 8085A/ Microprocessor Hardware Parallel Interface
1N4148
SCLK DOUT
(DTR) (RTS) (CTS) (GND)
VREF
COM1 OUTPUT CONTROL REGISTER
AN62
ADDRESS
HBEN LTC1272 LTC1273 LTC1275 LTC1276
ADDRESS DECODE BUSY
MC68000 DTACK DATA LTC1272 LTC1273 LTC1275 LTC1276 HBEN
AN62
D0/8
ANALOG FRONT-END CIRCUITRY ADDITIONAL PINS OMITTED CLARITY
AN62
Figure LTC1272/LTC1273/LTC1275/LTC1276 MC68000 Microproessor Hardware Parallel Interface
AN62-21
Application Note
ADDRESS
PORT ADDRESS
TMS320C25 READY
ADDRESS DECODE BUSY LTC1282
TMS32010
ADDRESS DECODE LTC1272 LTC1273 LTC1275 LTC1276
DATA D0/8
DATA
D0/8 HBEN
HBEN
AN62
ANALOG FRONT-END CIRCUITRY ADDITIONAL PINS OMITTED CLARITY
AN62
ANALOG FRONT-END CIRCUITRY ADDITIONAL PINS OMITTED CLARITY
Figure LTC1282 TMS320C25 Processor Parallel Interface
Figure LTC1272/LTC1273/LTC1275/LTC1276 TMS32010 Processor Parallel Interface
ADDRESS
TMS320C25
ADDRESS DECODE LTC1278
READY DATA
BUSY CONVST SAMPLE CLOCK
ANALOG FRONT-END CIRCUITRY ADDITIONAL PINS OMITTED CLARITY
AN62
Figure LTC1278 TMS320C25 Processor Parallel Interface
REFERENCE CIRCUITS
300k VOUT 2.500V ±20mV (TYP) 20ppm/°C 8-BIT (±2LSB) INITIAL ACCURACY 11-BIT TYPICAL ACCURACY OVER 70°C TEMPERATURE RANGE
AN62
VOUT 2.500V ±40mV (TYP/MAX) 20/40ppm/°C 8-BIT (±4LSB) INITIAL ACCURACY 10-BIT ACCURACY OVER 70°C TEMPERATURE RANGE
AN62
LT1034-2.5
LT1004-2.5
Figure LT1034-2.5 2.5V Voltage Reference
Figure Battery-Powered LT1004-2.5 2.5V Voltage Reference
AN62-22
Application Note
VOUT 2.500V ±10mV (TYP) 50ppm/°C 8-BIT (±1LSB) INITIAL ACCURACY 9-BIT TYPICAL ACCURACY OVER 70°C TEMPERATURE RANGE
AN62
VOUT 2.500V ±10mV (TYP) 30ppm/°C 8-BIT (±1LSB) INITIAL ACCURACY 10-BIT TYPICAL ACCURACY OVER 70°C TEMPERATURE RANGE
AN62
CATHODE LT1431Z ANODE
COLL LT1431
SGND
FGND
(3-PIN PACKAGE)
(8-PIN PACKAGE)
Figure LT1431Z 2.5V Voltage Reference (3-Pin Package)
Figure LT1431 2.5V Voltage Reference (8-Pin Package)
VOUT 5.00V ±50mV 8-BIT (±2.5LSB) TYPICAL ACCURACY
AN62
ANALOG INPUTS
RTOP
COLL LT1431 RMID
SCLK ACLK DOUT LTC1290
2.2µF
VOUT LT1027 VTRIM
SGND
FGND
22µF
AGND DGND
Figure LT1431Z Voltage Reference (8-Pin Package)
AN62
±1mV
(TYP/MAX) 1/2ppm/°C (LT1027A, 12-BIT (±1LSB) INITIAL ACCURACY 15-BIT ACCURACY OVER 70°C TEMPERATURE RANGE
Figure LT1027 12-Bit Accurate Voltage Reference Supplying Input Voltages LTC1290's VREF Pins
ADJUSTABLE REFERENCES
3.6k
LT1021-5 TRIM 1N4148 5.00V ±2.5mV (TYP/MAX) 2/5ppm/°C 11-BIT (±1LSB) INITIAL ACCURACY 14-BIT ACCURACY OVER 70°C TEMPERATURE RANGE
AN62
LT1009
10k* TRIM
VOUT 2.500V ±5mV (TYP/MAX) 15/25ppm/°C 9-BIT (±1LSB) INITIAL ACCURACY 10-BIT ACCURACY OVER 70°C TEMPERATURE RANGE
AN62
DOES AFFECT TEMPERATURE COEFFICIENT. TRIM RANGE
Figure LT1021-5 Adjustable Voltage Reference
Figure LT1009 2.5V Voltage Reference with Trim Range
AN62-23
Application Note
APPENDIX
8-BIT
10-BIT
12-BIT
µPOWER SO-8
LTC1096 CHANNEL LTC1098 CHANNEL
MULTIPLEXED
MULTIPLEXED WITH SHUTDOWN POWERED
LTC1286 CHANNEL LTC1290 CHANNEL LTC1291 CHANNEL LTC1292 CHANNEL LTC1293 CHANNEL LTC1294 CHANNEL LTC1296 CHANNEL LTC1297 CHANNEL LTC1298 CHANNEL
COMPLETE HIGH SPEED
LT574A SECOND SOURCE
POWERED
LTC1090 CHANNEL LTC1091 CHANNEL LTC1092 CHANNEL LTC1093 CHANNEL LTC1094 CHANNEL LTC1095 WITH REFERENCE
POWERED
LTC1272 250ksps 7572 UPGRADE LTC1273 300ksps INPUT LTC1275 300ksps ±2.5V INPUT LTC1276 300ksps INPUT LTC1278 500ksps/400ksps ±2.5V INPUT LTC1279 600ksps ±2.5V INPUT
FAST SO-8
LTC1196 1Msps LTC1198 750ksps 2-CHANNEL
DYNAMIC
POWERED
LTC1283 CHANNEL
POWERED
LTC1285 CHANNEL LTC1287 CHANNEL LTC1288 CHANNEL LTC1289 CHANNEL
POWERED
LTC1282 140ksps
MONITORING
DYNAMIC
AN62 AF01
Analog-to-Digital Converter Selection Guide
PART NUMBER LTC1090C,M DESCRIPTION 10-Bit, Serial I/O, Converter with 8-Channel Multiplexer. Full Duplex Serial Interface. RESOLUTION Bits TOTAL UNADJUSTED ERROR ±0.5LSB (LTC1090A) Over Full Temperature Range SAMPLE VOLTAGE RATE SUPPLY 35ksps 10V, MAXIMUM SUPPLY CURRENT 2.5mA PKGS AVAIL IMPORTANT FEATURES 10-Bit with Built-In 8-Channel Analog Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configuable Bipolar Unipolar Operation. Full Duplex Serial I/O. 10-Bit with Built-In 2-Channel Analog Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Unipolar Operation. Separate Reference Allows Reduced Span (Down 220mV) Operation. Unipolar ADCs Performed Differential Input Pair. Compatible with Microprocessors' Serial Ports. 1-Bit with Built-In 6-Channel Analog Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Half Duplex Serial I/O.
LTC1091C,M
10-Bit, 8-Pin Serial I/O, Converter with 2-Channel Analog Multiplexer. 10-Bit, 8-Pin, Converter with Serial Output.
Bits
±0.5LSB (LTC1091A) Over Full Temperature Range ±0.5LSB (LTC1092A) Over Full Temperature Range
31ksps
3.5mA
LTC1092C,M
Bits
38ksps
2.5mA
LTC1093C,M
10-Bit, Serial I/O, Converter with 6-Channel Multiplexer.
Bits
±0.5LSB (LTC1093A) Over Full Temperature Range
26ksps
10V,
2.5mA
AN62-24
Application Note
PART NUMBER LTC1094C,M DESCRIPTION 10-Bit, Serial I/O. Converter System with 8-Channel Multiplexer. RESOLUTION Bits TOTAL UNADJUSTED ERROR ±0.5LSB (LTC1094A) Over Full Temperature Range SAMPLE VOLTAGE RATE SUPPLY 26ksps 10V, MAXIMUM SUPPLY CURRENT 2.5mA PKGS. AVAIL. IMPORTANT FEATURES 10-Bit with Built-In 8-Channel Analog Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Half Duplex Serial I/O. 10-Bit with Built-In 6-Channel Analog MUX, Sample-and-Hold, Buried Zener Reference. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Half Duplex Serial I/O. Single Differential Input, Sample-andHold with Single-Ended Inputs. Ultra-Low Power, Automatic PowerDown Mode. 2-Channel Multiplexer, Sampling ADC. Ultra-Low Power, Automatic PowerDown Mode. Built-in Sample-and-Hold Allows Direct Conversion 5VP-P Signals 156kHz. Compatible with ADC0820 AD7820. 8-Bit with Built-In Sample-andHold. Compatible with Microprocessors' Serial Ports. Full Duplex Serial I/O. 8-Bit with Built-In Sample-andHold. Compatible with Microprocessors' Serial Ports. Full Duplex Serial I/O. 2-Channel Analog Automatic Power-Down. Single Supply 12-Bit with Built-In Sample-and-Hold 250ksps Conversion Rate. Built-In 2.42V Reference. Plug-In Upgrade AD7572. Operates with without -15V Supply Required AD7572.
LTC1095C,M
10-Bit, Serial I/O, Converter with 6-Channel Multiplexer Buried Zener Reference.
Bits
±0.15%
26ksps
7.2V
3.7mA
LTC1096C
8-Bit, 16µs, Micropower, Sampling Converter with Serial Differential Input. 8-Bit, 16µs, Micropower, Sampling Converter with Serial 2-Channel MUX. 8-Bit, Converter with Built-in Sample-and-Hold. Parallel Output. 8-Bit, 8-Pin, Serial I/O, 600ns, 1MHz, Sampling Converter with Automatic Power-Down. 8-Bit, 8-Pin, Serial I/O, 600ns, 750kHz, Sampling Converter with 2-Channel Analog Automatic Power-Down. 12-Bit, 3µs, 250ksps Sampling Converter with Parallel Output. Single Supply. Input Range:
Bits
±0.5LSB (LTC1096A) Over Full Temperature Range ±0.5LSB (LTC1098A) Over Full Temperature Range ±1LSB Over Full Temperature Range ±0.5LSB Over Full Temperature Range ±0.5LSB Over Full Temperature Range
33ksps
180µA, During Shutdown 230µA, During Shutdown 15mA
LTC1098C
Bits
33ksps
LTC1099C,M
Bits
256ksps
LTC1196C
Bits
1Msps
10mA
LTC1198C
Bits
750ksps
10mA, During Shutdown 30mA
LTC1272C,M
Bits
LTC1273C,M
12-Bit, 2.7µs, 300ksps Sampling Converter with Parallel Output. Single Supply. Input Range:
Bits
±0.5LSB Linearity, ±1LSB Differential Nonlinearity, ±4LSB Offset Error Over Full Temperature Range. ±10LSB Full-Scale Error. 72dB SINAD -82dB 10kHz. ±0.5LSB Linearity, ±0.75LSB Differential Nonlinearity, ±4LSB Offset Error Over Full Temperature Range. ±10LSB Full-Scale Error. 70dB SINAD 74dB 150kHz.
250ksps (111ksps also available)
300ksps
25mA
Single Supply 12-Bit with Built-In Sample-and-Hold, Internal Clock, 300ksps Conversion Rate. Built-In 2.42V Reference.
LTC1275C
12-Bit, 2.7µs, 300ksps, Sampling Converter with Parallel Output. Split Supply. Input Range: 2.5V 2.5V.
Bits
±0.5LSB Linearity, 300ksps ±0.75LSB Differential Nonlinearity, ±4LSB Offset Error Over Full Temperature Range. 70dB SINAD -74dB 150kHz. ±10LSB Full-Scale Error.
25mA
Split Supply 12-Bit with Built-In Sample-and-Hold, Internal Clock, 300ksps Conversion Rate. Built-In 2.42V Reference.
AN62-25
Application Note
PART NUMBER LTC1276C DESCRIPTION 12-Bit, 2.7µs, 300ksps Sampling Converter with Parallel Output. Split Supply. Input Range: RESOLUTION Bits TOTAL UNADJUSTED ERROR SAMPLE VOLTAGE RATE SUPPLY MAXIMUM SUPPLY CURRENT 25mA PKGS. AVAIL. IMPORTANT FEATURES Split Supply 12-Bit with Built-In Sample-and-Hold, Internal Clock, 300ksps Conversion Rate. Built-In 2.42V Reference.
±0.5LSB Linearity, 300ksps ±0.75LSB Differential Nonlinearity, ±4LSB Offset Error Over Full Temperature Range. 70dB SINAD 74dB 150kHz. ±10LSB Full-Scale Error. ±1LSB Linearity, 500ksps ±1LSB Differential (400ksps Nonlinearity, ±6LSB also Offset Error Over available) Full Temperature Range. 70dB SINAD 74dB 250kHz. ±15LSB Gain Error.
LTC1278C,I
12-Bit, 1.6µs, 500ksps Sampling Converter with Parallel Output. Input Range with Split Supply: 2.5V 2.5V; with Supply:
Bits
30mA, During Shutdown
Single Split Supply 12-Bit with Built-In Sample-and-Hold, Internal Clock, 500ksps Conversion Rate. Built-In 2.42V Reference. Guaranteed 70dB SINAD 100kHz Input Frequency Over Temperature.
LTC1279C,I
12-Bit, 1.4µs, 600ksps Sampling Converter with Parallel Output. Input Range with Supply: with Split Supply: 2.5V 2.5V.
LTC1282C
12-Bit, 6µs, 140ksps Sampling Converter with Parallel Output. Input Range with Single Supply: 2.5V; with Split Supply: 1.25V 1.25V.
LTC1283C
10-Bit, 44µs, 3.3V ±3.3V Sampling Converter with Serial Output. Input Range with Split ±3.3V Supply: 2.5V 2.5V; with 3.3V Supply: 2.5V. 12-Bit, 8-Pin Serial I/O, 160µA (Typ) Sampling Converter with Automatic Power-Down Differential Analog Input. 12-Bit, 8-Pin Serial I/O, 250µA (Typ) Sampling Converter with Automatic Power-Down.
±1LSB Linearity, 600ksps ±1LSB Differential Nonlinearity, ±6LSB Offset Error Over Full Temperature Range. 70dB SINAD 74dB 300kHz. ±15LSB Gain Error. Bits ±0.5LSB Linearity, 140ksps ±0.75LSB Differential Nonlinearity, ±4LSB Offset Error Over Full Temperature Range. 69dB SINAD 77dB 70kHz. ±10LSB Full-Scale Error. Bits ±0.5LSB Linearity 15ksps ±0.5LSB Offset Error Over Full Temperature Range. Bits
20mA, During Shutdown
Single Split Supply 12-Bit with Built-In Sample-and-Hold, Internal Clock, 600ksps Conversion Rate. Built-In 2.42V Reference. Guaranteed 70dB SINAD -78dB 100kHz Input Frequency Over Temperature.
Single Split Supply 12-Bit with 2.7V Guaranteed Minimum Supply Voltage. Complete with Sample-andHold, Internal Clock 25ppm/°C 1.2V Reference.
3.3V ±3.3V
350µA
3.3V ±3.3V Supply 10-Bit with Built-In Sample-and-Hold. 10-Bit Unipolar 9-Bit Sign Bipolar Serial Output. Compatible with Microprocessors' Serial Ports. Full Duplex Serial I/O. 12-Bit with Built-In Sample-andHold. Operates Supply Voltage. Compatible with Microprocessors' Serial Ports. Automatic Power-Down.
LTC1285C
Bits
±2LSB Linearity, 7.5ksps ±0.75LSB Differential Nonlinearity, ±3LSB Offset, ±8LSB FullScale Error Over Full Temperature Range. ±2LSB Linearity, ±0.75LSB Differential Nonlinearity, ±3LSB Offset, ±8LSB Full-Scale Error Over Full Temperature Range. ±0.5LSB Linearity, ±3LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range. 12.5ksps
320µA, During Shutdown
LTC1286C,I
Bits
500µA, During Shutdown
12-Bit with Built-In Sample-andHold. Compatible with Microprocessors' Serial Ports. Automatic Power Down.
LTC1287C,I
12-Bit, 33µs, 3.3V Sampling Converter with Serial Output. Input Range with 3.3V Supply: 3.3V.
Bits
30ksps
2.7V 3.3V
12-Bit with Built-In Sample-andHold. Guaranteed Operation 2.7V Supply. Compatible with Microprocessors' Serial Ports.
AN62-26
Application Note
PART NUMBER LLTC1288C DESCRIPTION 12-Bit, 8-Pin, Serial I/O, 210µA (Typ) Sampling Converter with Automatic Power-Down, Differential Analog Input 2-Channel Multiplexer. 12-Bit, 40µs, 3.3V ±3.3V, Sampling Converter with 8-Channel Serial Output. Input Range with Split ±3.3V Supply: 3.3V 3.3V; with 3.3V Supply: 3.3V. RESOLUTION Bits TOTAL UNADJUSTED ERROR SAMPLE VOLTAGE RATE SUPPLY MAXIMUM SUPPLY CURRENT 390µA, During Shutdown PKGS. AVAIL. IMPORTANT FEATURES 12-Bit with Built-In Sample-andHold. Operates Supply Voltage. Compatible with Microprocessors' Serial Ports. Automatic Power-Down. 2-Channel Multiplexer. 12-Bit with Built-In Sample-andHold 8-Channel MUX. Guaranteed Operation 2.7V Supply. Compatible with Microprocessors' Serial Ports. Automatic Power-Down. 12-Bit with Built-In 8-Channel Analog Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Full Duplex Serial I/O. 12-Bit with Built-In Sample-andHold. Compatible with Microprocessors' Serial Ports. Automatic Power-Down. 12-Bit ADC, Unipolar Conversion Single Differential Input. Separate Reference Allows Reduced Span. Compatible with Microprocessors' Serial Ports. 12-Bit with Built-In 6-Channel Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Full Duplex Serial I/O. 12-Bit with Built-In 8-Channel Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Half Duplex Serial I/O. 12-Bit with Built-In 8-Channel Sample-and-Hold. Compatible with Microprocessors' Serial Ports. Software Configurable Bipolar Unipolar Operation. Programmable Power-Down Includes System Shutdown Output. 12-Bit with Built-In Sample-andHold. Compatible with Microprocessors Serial Ports. Automatic Power-Down. 12-Bit with Built-In Sample-andHold 2-Channel MUX. Compatible with Microprocessors Serial Ports. Automatic Power-Down.
±2LSB Linearity, 6.6ksps ±0.75 Differential Nonlinearity, ±3LSB Offset, ±8LSB FullScale Error Over Full Temperature Range. ±0.5LSB Linearity, ±1.5LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range. 25ksps
LTC1289C,I
Bits
2.7V 3.3V ±2.7V ±3.3V
5mA, 10µA During Shutdown
LTC1290C,I,M 12-Bit, 8-Pin Serial I/O, Converter with 8-Channel Multiplexer. Full Duplex Serial Interface.
Bits
±0.5LSB Linearity, ±1.5LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range. ±0.5LSB Linearity, ±3LSB Offset, ±1LSB Full-Scale Error Over Full Temperature Range. ±0.5LSB Linearity, ±3LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range. ±0.5LSB Linearity, ±3LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range. ±0.5LSB Linearity, ±3LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range. ±0.5LSB Linearity, ±3LSB Offset, ±0.5LSB Full-Scale Error Over Full Temperature Range.
50ksps
12mA
LTC1291C,I,M 12-Bit, 12µs, Sampling Converter with Serial Output. Input Range: LTC1292C,I,M 12-Bit, 8-Pin Converter Serial Output.
Bits
54ksps
Bits
60ksps
2.7V 3.3V ±3.3V
12mA, 10µA During Shutdown 12mA
LTC1293C,I,M 12-Bit, Serial I/O, Converter System with 6-Channel Multiplexer.
Bits
46ksps
12mA
LTC1294C,I,M 12-Bit, Serial I/O, Converter System with 8-Channel Multiplexer.
Bits
46ksps
12mA
LTC1296C,I,M 12-Bit, Serial I/O, Converter System with 8-Channel Multiplexer.
Bits
46ksps
12mA, 10µA During Shutdown
LTC1297C,I,M 12-Bit, 20µs, Sampling Converter with Differential Input Serial Output. Input Range with Supply: LTC1298C,I 12-Bit, 8-Pin, Serial I/O, 340µA (Typ) Sampling Converter with Automatic Power-Down.
Bits
Bits
±0.5LSB Linearity, ±3LSB Offset, ±1LSB Full-Scale Error Over Full Temperature Range. ±2LSB Linearity, ±0.75LSB Differential Nonlinearity, ±3LSB Offset, ±8LSB Full-Scale Error Over Full Temperature Range.
20ksps
12mA, 10µA During Shutdown 640µA, During Shutdown
11.1ksps
Information furnished Linear Technology Corporation believed accurate reliable. However, responsibility assumed use. Linear Technology Corporation makes representation that interconnection circuits described herein will infringe existing patent rights.
AN62-27
Application Note
Digital-to-Analog Converter Selection Guide
PART NUMBER LTC1257C,I RESOLUTION Bits TOTAL UNADJUSTED ERROR ±0.5LSB DNL, ±3.5LSB SETTLING VOLTAGE TIME SUPPLY (±1/2LSB) 15.5V MAXIMUM SUPPLY CURRENT 600µA PKGS. AVAIL. IMPORTANT FEATURES 12-Bit with Cascadable Serial I/O, Built-In Reference, Voltage Output. Wide Supply Range 15.5V. Space Saving SO-8 Package.
DESCRIPTION 12-Bit, Serial I/O, 8-Pin Converter. Cascadable Serial I/O. Internal 2.048V Reference. Voltage Output.
APPENDIX
VOLTAGE REFERENCES
Listed Temperature Drift (T.C.) Initial Accuracy
1.25V OUTPUT T.C. *LT1034B-1.2 *LT1034-1.2 *LT1004-1.2 *LM385B-1.2 *LM385-1.2 ACCURACY *LT1004-1.2 *LT1034B-1.2 *LT1034-1.2 *LM385B-1.2 *LM385-1.2
4.5V OUTPUT T.C. LT1019C-4.5 ACCURACY LT1019C-4.5
OUTPUT T.C. LT1021B-7 LT1021D-7 LT1034 ACCURACY LT1021B-7 LT1021D-7 LT1034
OUTPUT T.C. LT1027C-5 LT1027D-5 LT1027E-5 LT1021C-5 LT1019-5 LT1029A REF-02E REF-02H LT1021B-5 LT1021D-5 LT1029 REF-02C REF-02D ACCURACY LT1027C-5 LT1021B-5 LT1027D-5 LT1027E-5 REF-02E LT1019-5 LT1021C-5 LT1021D-5 LT1029A REF-02H LT1029 REF-02C REF-02D
OUTPUT T.C. LT1021C-10 LT1031C LT581K LT1019-10 LT1031D LT581J REF-01E LT1021B-10 LT1021D-10 LT1031B REF-01H REF-01C ACCURACY LT1021B-10 LT1031B-10 REF-01E LT1031C LT581K LT1019-10 LT1021C-10 LT1021D-10 LT1031D REF-01H LT581J REF-01C
2.5V OUTPUT T.C. LT1019C-2.5 LT1009C-2.5 LT580M LT1034B-2.5 LT580L *LT1004C-2.5 LT1034-2.5 LT580K *LM385B-2.5 LM336B-2.5 *LM385-2.5 LM336-2.5 ACCURACY LT580M LT1019C-2.5 LT1009-2.5 LT580L LT1034-2.5 LT580K *LT1004C-2.5 *LM385B-2.5 *LM385-2.5 LT580J LM336B-2.5 LM336-2.6
6.9V 6.95V OUTPUT T.C. LTZ1000 LM399A LM399 LM329A LM329B LM329C ACCURACY LM329A LTZ1000 LM329B LM329C LM329D LM399A
*Micropower
AN62 BF01
Linear Technology Corporation
LT/GP 1094 PRINTED
AN62-28
1630 McCarthy Blvd., Milpitas, 95035-7487
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
LINEAR TECHNOLOGY CORPORATION 1994
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