LT®2178 micropower dual surface mount standard 8-pin configuration, LT

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LT®2178 micropower dual surface mount standard 8-pin configuration, LT

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LT2178/LT2179 17µA Max, Dual Quad, Single Supply, Precision Amps DESCRIPTION
LT®2178 micropower dual surface mount standard 8-pin configuration, LT2179 micropower quad offered surface mount 14-pin package. Both devices optimized single supply operation Specifications also provided ±15V supply. extremely supply current combined with true precision specifications: offset voltage offset current 50pA. Both offset parameters have drift with temperature. 1.5pAP-P current noise picoampere offset current permit megohm level source resistors without introducing serious errors. Voltage noise, 0.9VP-P, remarkably considering supply current. LT2178/LT2179 operated from single supply lithium-cell NiCd batteries). input range goes below ground. all-NPN output stage swings within millivolts ground while sinking current. power consuming pull down resistors needed. surface mount applications where three times higher supply current acceptable, micropower LT1077 single, LT2078 dual LT2079 quad recommended. LT1077/LT2078/LT2079 have significantly higher bandwidth, slew rate, lower voltage noise better output drive capability. applications requiring packages refer LT1178/LT1179.
Package with Standard Pinout Supply Current Amplifier: Offset Voltage: Offset Current: 250pA Input Bias Current: Voltage Noise: 0.9VP-P, 0.1Hz 10Hz Current Noise: 1.5pAP-P, 0.1Hz 10Hz Offset Voltage Drift: 0.5V/°C Gain Bandwidth Product: 85kHz Slew Rate: 0.04V/s Single Supply Operation Input Voltage Range Includes Ground Output Swings Ground while Sinking Current Pull-Down Resistors Needed Output Sources Sinks Load Current
APPLICATIONS
Battery- Solar-Powered Systems Portable Instrumentation Remote Sensor Amplifier Satellite Circuitry Micropower Sample-and-Hold Thermocouple Amplifier Micropower Filters
Lare registered trademarks Linear Technology Corporation. other trademarks property their respective owners.
TYPICAL APPLICATION
Self-Buffered, Dual Output, Micropower Reference
SUPPLY CURRENT AMPLIFIER TOTAL BATTERY CURRENT 28mA OUTPUT ACCURACY 0.4% TEMPERATURE COEFFICIENT 20ppm/°C LOAD REGULATION 25ppm/mA, 5mA, LINE REGULATION 10ppm/V 0.1% FILM RESISTORS
Supply Current Temperature
LT2178
250k 0.1F LT1004-1.2
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1.2365V OUTPUT
2.470V OUTPUT
LT2178 0.1F
1.5V
TEMPERATURE (°C)
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LT2178/LT2179 ABSOLUTE MAXIMUM RATINGS
Supply Voltage .±22V Differential Input Voltage.±30V Input Voltage. Equal Positive Supply Voltage Below Negative Supply Voltage Output Short-Circuit Duration Indefinite Specified Temperature Range Commercial. 70°C Industrial -40°C 85°C Storage Temperature Range. -65°C 150°C Lead Temperature (Soldering, sec) 300°C
CONFIGURATION
VIEW VIEW
PACKAGE 8-LEAD PLASTIC TJMAX 150°C, 190°C/W
PACKAGE 14-LEAD PLASTIC TJMAX 150°C, 150°C/W
ORDER INFORMATION
LEAD FREE FINISH LT2178ACS8#PBF LT2178AIS8#PBF LT2178CS8#PBF LT2178IS8#PBF LT2179ACS8#PBF LT2179CS8#PBF LT2179IS8#PBF LEAD BASED FINISH LT2178ACS8 LT2178AIS8 LT2178CS8 LT2178IS8 LT2179ACS8 LT2179CS8 LT2179IS8 TAPE REEL LT2178ACS8#TRPBF LT2178AIS8#TRPBF LT2178CS8#TRPBF LT2178IS8#TRPBF LT2179ACS8#TRPBF LT2179CS8#TRPBF LT2179IS8#TRPBF TAPE REEL LT2178ACS8#TR LT2178AIS8#TR LT2178CS8#TR LT2178IS8#TR LT2179ACS8#TR LT2179CS8#TR LT2179IS8#TR PART MARKING 2178A 2178AI 2178 2178I 2179A 2179 2179I PART MARKING 2178A 2178AI 2178 2178I 2179A 2179 2179I PACKAGE DESCRIPTION 8-Lead Plastic 8-Lead Plastic 8-Lead Plastic 8-Lead Plastic 14-Lead Plastic 14-Lead Plastic 14-Lead Plastic PACKAGE DESCRIPTION 8-Lead Plastic 8-Lead Plastic 8-Lead Plastic 8-Lead Plastic 14-Lead Plastic 14-Lead Plastic 14-Lead Plastic TEMPERATURE RANGE 70°C -40°C 85°C 70°C -40°C 85°C 70°C 70°C -40°C 85°C TEMPERATURE RANGE 70°C -40°C 85°C 70°C -40°C 85°C 70°C 70°C -40°C 85°C
Consult Marketing parts specified with wider operating temperature ranges. more information lead free part marking, http://www.linear.com/leadfree/ more information tape reel specifications,
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LT2178/LT2179 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Time Input Offset Voltage Long Term Input Offset Voltage Stability Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Input Noise Current Density Input Resistance Differential Mode Common Mode Input Voltage Range CMRR PSRR AVOL Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing 3.5V 2.2V 0.03V Load (Note 0.03V 3.5V, Output Low, Load Output Low, Output Low, ISINK 100A Output High, Load Output High, Slew Rate Gain Bandwidth Product Supply Current Amplifier Channel Separation Minimum Supply Voltage 10pF (Note 5kHz ±1.5V, (Note 0.1Hz 10Hz (Note 10Hz (Note 1000Hz (Note 0.1Hz 10Hz (Note 10Hz (Note 1000Hz (Note -0.3 -0.3 V/mV V/mV CONDITIONS LT2178 LT2179
0.1V, 1.4V, 25°C, unless otherwise noted.
LT2178AC/LT2178AI LT2179AC 0.05 0.03 0.01 0.25 0.07 LT2178C/LT2178I LT2179C/LT2179I 0.05 0.03 0.01 0.35
UNITS V/Mo VP-P nVHz nVHz pAP-P pAHz pAHz
0.013 0.025
0.013 0.025
denotes specifications which apply over full operating temperature range. 0.1V, 1.4V, -40°C 85°C grades, unless otherwise noted. (Note
SYMBOL PARAMETER CMRR PSRR Input Offset Voltage Input Offset Voltage Drift Input Offset Current Input Bias Current Common Mode Rejection Ratio Power Supply Rejection Ratio 0.05V 3.2V CONDITIONS LT2178 LT2179 LT2178 (Note LT2179
LT2178AI 0.07 0.70
LT2178I/LT2179I
UNITS
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LT2178/LT2179 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER AVOL Large-Signal Voltage Gain Maximum Output Voltage Swing CONDITIONS 0.05V Load (Note 0.05V 3.5V, Output Low, Load Output Low, ISINK 100A Output High, Load Output High, Supply Current Amplifier
denotes specifications which apply over full operating temperature range. 0.1V, 1.4V, -40°C 85°C grades, unless otherwise noted. (Note
LT2178AI LT2178I/LT2179I UNITS V/mV V/mV
denotes specifications which apply over full operating temperature range. 0.1V, 1.4V, 70°C, unless otherwise noted. (Note
SYMBOL PARAMETER CMRR PSRR AVOL Input Offset Voltage Input Offset Voltage Drift Input Offset Current Input Bias Current Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing 3.4V 2.5V 0.05V Load (Note 0.05V 3.5V, Output Low, Load Output Low, ISINK 100A Output High, Load Output High, Supply Current Amplifier CONDITIONS LT2178 LT2179 LT2178 (Note LT2179
LT2178AC/LT2179AC 0.06 0.35
LT2178C/LT2179C 0.06
UNITS V/mV V/mV V/mV V/mV
±15V, 25°C, unless otherwise noted.
LT2178AC/LT2178AI LT2179AC 0.05 13.5 13.5V -15V ±18V ±10V, ±10V, Load 0.02 13.9 -15.3 1200 2500 ±14.2 ±12.7 0.04 0.25 13.5 0.02 LT2178C/LT2178I LT2179C/LT2179I 0.05 13.9 -15.3 1000 2500 ±14.2 ±12.7 0.04 0.35
SYMBOL PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Input Voltage Range CMRR PSRR AVOL VOUT Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate
CONDITIONS LT2178 LT2179
UNITS V/mV V/mV
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LT2178/LT2179 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Gain Bandwidth Product Supply Current Amplifier CONDITIONS 5kHz
denotes specifications which apply over full operating temperature range. 0.1V, 1.4V, -40°C 85°C grades, unless otherwise noted. (Note
LT2178AC/LT2178AI LT2179AC LT2178C/LT2178I LT2179C/LT2179I
UNITS
denotes specifications which apply over full operating temperature range. ±15V, -40°C 85°C grades, unless otherwise noted.
SYMBOL PARAMETER AVOL CMRR PSRR Input Offset Voltage Input Offset Voltage Drift Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing Supply Current Amplifier ±10V, 13V, -14.9V ±18V CONDITIONS LT2178 LT2179 LT2178 (Note LT2179
LT2178AI 0.07
LT2178I/LT2179I ±13.5
UNITS V/mV
±13.5
denotes specifications which apply over full operating temperature range. ±15V, 70°C, unless otherwise noted.
SYMBOL PARAMETER AVOL CMRR PSRR Input Offset Voltage Input Offset Voltage Drift Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing Supply Current Amplifier ±10V, 13V, -15V CONDITIONS LT2178 LT2179 LT2178 (Note LT2179
LT2178AC/LT2179AC 0.06 ±13.6 0.35
LT2178C/LT2179C 0.06 ±13.6 0.35
UNITS V/mV
Note Stresses beyond those listed under Absolute Maximum Ratings cause permanent damage device. Exposure Absolute Maximum Rating condition extended periods affect device reliability lifetime. Note Typical parameters defined yield parameter distributions individual amplifiers, i.e., LT2179s LT2178s) typically amps 120) will better than indicated specification. Note This parameter tested sample basis only. noise parameters tested with ±2.5V,
Note This parameter guaranteed design tested. Note Power supply rejection ratio measured minimum supply voltage. amps actually work 1.7V supply with typical offset skew -300V. Note This parameter 100% tested. Note During testing -40°C, power supply turn-on time less than 0.5s. Note LT2178C/LT2179C designed, characterized expected meet industrial temperature limits, tested -40°C 85°C. I-grade parts guaranteed.
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LT2178/LT2179 TYPICAL PERFORMANCE CHARACTERISTICS
Distribution Input Offset Voltage
25°C 2500 AMPS TESTED INPUT OFFSET CURRENT (pA) OFFSET VOLTAGE SHIFT -100 85°C -200 -300 NONFUCTIONAL -400 -150 -500 25°C INPUT BIAS CURRENT (nA) -40°C
Minimum Supply Voltage
-2.5 -3.0 -3.5
Input Bias Offset Currents Temperature
NUMBER AMPS
-100
OFFSET VOLTAGE
POSITIVE SUPPLY VOLTAGE
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-4.0
TEMPERATURE (°C)
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Output Saturation Temperature Sink Current
1000 ISINK SATURATION VOLTAGE (mV) ISINK 100mA SHORT CIRCUIT CURRENT (mA) SINKING SOURCING
Short-Circuit Current
2.5V 2.5V NOISE VOLTAGE (0.4V/DIV)
0.1Hz 10Hz Noise
25°C, 2.5V
ISINK LOAD GROUND GROUND TEMPERATURE (°C)
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CHANNEL
CHANNEL TIME FROM OUTPUT SHORT GROUND (MINUTES)
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TIME (SECONDS)
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0.01Hz 10Hz Noise
25°C, 2.5V NOISE VOLTAGE (0.4V/DIV) 1000 VOLTAGE NOISE DENSITY CURRENT NOISE DENSITY
Noise Spectrum
25°C 2.5V CURRENT NOISE VOLTAGE GAIN (dB)
Voltage Gain Frequency
25°C
CHANNEL
VOLTAGE NOISE CORNER 0.5Hz
CHANNEL TIME (SECONDS)
FREQUENCY (Hz)
1000
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0.001 0.01
100k FREQUENCY (Hz)
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LT2178/LT2179 TYPICAL PERFORMANCE CHARACTERISTICS
Gain, Phase Frequency
PHASE 25°C LOAD VOLTAGE GAIN (V/V) PHASE SHIFT (DEG) PHASE GAIN GAIN 100k FREQUENCY (Hz)
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Voltage Gain Load Resistance
15V, 25°C OVERSHOOT
Capacitive Load Handling
VOLTAGE GAIN (dB)
100k
25°C 85°C
10000
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100k LOAD RESISTANCE GROUND
1000 CAPACITIVE LOAD (pF)
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Large-Signal Transient Response ±15V
Large-Signal Transient Response
Small-Signal Transient Response ±2.5V
20mV/DIV 12pF
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5V/DIV
1V/DIV
12pF
500s/DIV
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100s/DIV 12pF INPUT PULSE 3.8V
20s/DIV
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Small-Signal Transient Response ±15V
Small-Signal Transient Response
COMMON MODE REJECTION RATIO (dB)
Common Mode Rejection Ratio Frequency
25°C
20mV/DIV
20mV/DIV
12pF
20s/DIV
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20s/DIV 12pF INPUT PULSE 50mV 150mV
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FREQUENCY (Hz)
100k
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LT2178/LT2179 TYPICAL PERFORMANCE CHARACTERISTICS
Power Supply Rejection Ratio Frequency
OUTPUT IMPEDANCE PSRR (dB) OPERATING FREQUENCY (Hz) 100k FREQUENCY (Hz) 100k
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Closed Loop Output Impedance
25°C
POSITIVE SUPPLY NEGATIVE SUPPLY
25°C 2.5V 1VP-P SINE WAVE
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SIMPLIFIED SCHEMATIC
LT2178 LT2179
2.2k
5.6k
1.3k
6.4k
11.5k
12.5k
2.9k
8.6k
50pF
175pF
2.5pF 150k 40pF 5.35k 700k
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9.1k
700k
6.2k
6.2k
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LT2178/LT2179 APPLICATIONS INFORMATION
Please LT2078/LT2079 data sheet applications information. comments relating specifications, single supply operation phase reversal protection directly applicable LT2178/LT2179.
Micropower 100Hz 1MHz V-to-F Converter
220k* 1MHz TRIM 1.5M 100k 1N4148
LT2178
100Hz TRIM 240k
LT1004-2.5
LT2178
0.01F
2N3906
2N3904 74C14 CD4024
0.33F
RESET FOUT
LTC®201 0.022F 500pF POLYSTYRENE
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LINEARITY 0.02% QUIESCENT CURRENT SUPPLY CURRENT 360A 1MHz DRIFT 50ppm/°C *TRWMTR/5 120ppm/°C
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LT2178/LT2179 PACKAGE DESCRIPTION
Dimensions inches (millimeters) unless otherwise noted. Package 8-Lead Plastic Small Outline (Narrow 0.150)
(Reference 05-08-1610)
.189 .197 (4.801 5.004) NOTE
.045 .050
.005
.245
.160
.005
.228 .244 (5.791 6.197)
.150 .157 (3.810 3.988) NOTE
.030
.005 RECOMMENDED SOLDER LAYOUT
.010 .020 (0.254 0.508) .008 .010 (0.203 0.254) .016 .050 (0.406 1.270) NOTE: DIMENSIONS
.053 .069 (1.346 1.752)
.004 .010 (0.101 0.254)
INCHES (MILLIMETERS) DRAWING SCALE THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .006" (0.15mm)
.014 .019 (0.355 0.483)
.050 (1.270)
0303
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LT2178/LT2179 PACKAGE DESCRIPTION
Dimensions inches (millimeters) unless otherwise noted. Package 14-Lead Plastic Small Outline (Narrow 0.150)
(Reference 05-08-1610)
.337 .344 (8.560 8.738) NOTE
.045 .050
.005
.245
.160
.005 .228 .244 (5.791 6.197) .150 .157 (3.810 3.988) NOTE
.030
.005
RECOMMENDED SOLDER LAYOUT
.010 .020 (0.254 0.508)
.053 .069 (1.346 1.752)
.008 .010 (0.203 0.254)
.004 .010 (0.101 0.254)
.016 .050 (0.406 1.270) NOTE: DIMENSIONS
.014 .019 (0.355 0.483)
.050 (1.270)
INCHES (MILLIMETERS) DRAWING SCALE THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .006" (0.15mm)
0502
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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.
LT2178/LT2179 TYPICAL APPLICATION
Single Supply, 1kHz, Order Butterworth Lowpass Filter
1000pF 301k 1000pF 1000pF
LT2179
1000pF
LT2179
301k
121k
LT2179
221k
LT2179 VOUT
121k
3.3V
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12-BIT ACCURATE SIGNAL RANGE FROM 1.8V 3.3V SINGLE SUPPLY. MAXIMUM OUTPUT OFFSET ERROR 448V. EACH ORDER SECTION: C1C2R1R2 WOQC1 WOC2
GAIN(dB) FREQUENCY (kHz)
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RELATED PARTS
PART NUMBER DESCRIPTION LT1078/LT1079 Dual/Quad Max, Single Supply Precision Amps COMMENTS 2.5V/°C Drift Max, 200kHz BBW, 0.07V/s Slew Rate, Input/Output Common Mode Includes Ground Single Supply Input Range: -0.4V 44V, Micropower Amplifier, Rail-to-Rail Input Output, 200kHz 2.5V/°C Drift Max, 200kHz BBW, 0.07V/s Slew Rate, Input/Output Common Mode Includes Ground Surface Mount Standard Pinout
LT1211/LT1212 14MHz, 7V/s Single Supply Dual Quad Precision Amps 275V Max, 6V/°C Drift Input Voltage Range Includes Ground LT1490/LT1491 Dual/ Quad Micropower Rail-to-Rail Input Output Amps LT2078/LT2079 Dual/Quad Max, Single Supply Precision Amps
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Linear Technology Corporation
(408) 432-1900 FAX: (408) 434-0507
0109 PRINTED
1630 McCarthy Blvd., Milpitas, 95035-7417
www.linear.com
LINEAR TECHNOLOGY CORPORATION 1996

LT®2178 micropower dual surface mount standard 8-pin configuration, LT

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