LT1638/LT1639 1.2MHz, 0.4V/µs Over-The-Top Micropower Rail-to-Rail Inp

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

LT1638/LT1639 1.2MHz, 0.4V/µs Over-The-Top Micropower Rail-to-Rail Inp

Datasheet Thumbnail

Top Searches for this datasheet

LT1638/LT1639 1.2MHz, 0.4V/µs Over-The-Top Micropower Rail-to-Rail Input Output Amps DESCRIPTIO
®1638 power dual rail-to-rail input output operational amplifier available standard 8-pin PDIP packages well 8-lead MSOP package. LT1639 power quad rail-to-rail input output operational amplifier offered standard 14-pin PDIP surface mount packages. space limited applications LT1638 available 0.8mm dual fine pitch leadless package (DFN). LT1638/LT1639 amps operate single split supplies with total voltage 2.5V drawing only 170µA quiescent current amplifier. These amplifiers reverse battery protected draw current reverse supply 18V. input range LT1638/LT1639 includes both supplies, unique feature this device capability operate over with either both inputs above inputs handle 44V, both differential common mode, independent supply voltage. input stage incorporates phase reversal protection prevent false outputs from occurring when inputs below negative supply. Protective resistors included input leads that current does become excessive when inputs forced below negative supply. LT1638/LT1639 drive loads 25mA still maintain rail-to-rail capability. amps unity-gain stable drive capacitive loads 1000pF when optional output compensation used.
Output Voltage Input Voltage
Operates with Inputs Above Rail-to-Rail Input Output Power: 230µA Amplifier Gain Bandwidth Product: 1.2MHz Slew Rate: 0.4V/µs High Output Current: 25mA Specified ±15V Supplies Reverse Battery Protection Supply Sequencing Problems High Voltage Gain: 1500V/mV Single Supply Input Range: 0.4V High CMRR: 98dB Phase Reversal Available 14-Lead 8-Lead MSOP Packages
APPLICATIO
Battery- Solar-Powered Systems Portable Instrumentation Sensor Conditioning Supply Current Sensing Battery Monitoring Micropower Active Filters 20mA Transmitters
registered trademarks Linear Technology Corporation. Over-The-Top registered trademark Linear Technology Corporation. other trademarks property their respective owners.
TYPICAL APPLICATIO
Over-The-Top® Comparator with 100mV Hysteresis Centered
LT1638
LT1638
1638/39 TA01
44V, 27µs
20mV/DIV
1638/39 TA02
16389fc
LT1638/LT1639
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage Input Differential Voltage Input Current ±25mA Output Short-Circuit Duration (Note .Continuous Operating Temperature Range (Note LT1638C/LT1639C 40°C 85°C LT1638I/LT1639I 40°C 85°C LT1638H/LT1639H 40°C 125°C
PACKAGE/ORDER INFORMATION
ORDER PART NUMBER
VIEW
VIEW
LT1638CMS8 LT1638IMS8 PART MARKING* LTCY
PACKAGE 8-LEAD PLASTIC MSOP TJMAX 150°C, 300°C/W (MS8)
ORDER PART NUMBER
VIEW
LT1638CDD LT1638IDD
PART MARKING* LAAL
PACKAGE 8-LEAD (3mm 3mm) PLASTIC TJMAX 125°C, 160°C/W (NOTE UNDERSIDE METAL INTERNALLY CONNECTED
*The temperature grades identified label shipping container. Consult Marketing parts specified with wider operating temperature ranges.
(Note
Specified Temperature Range (Note LT1638C/LT1639C 40°C 85°C LT1638I/LT1639I 40°C 85°C LT1638H/LT1639H 40°C 125°C Junction Temperature 150°C Package 125°C Storage Temperature Range 65°C 150°C Package 65°C 125°C Lead Temperature (Soldering, sec). 300°C
ORDER PART NUMBER
LT1638CN8 LT1638IN8 LT1638CS8 LT1638IS8 LT1638HS8 PART MARKING 1638 1638I 1638H ORDER PART NUMBER LT1639CN LT1639IN LT1639CS LT1639IS LT1639HS
PACKAGE 8-LEAD PDIP
PACKAGE 8-LEAD PLASTIC
TJMAX 150°C, 150°C/W (N8) TJMAX 150°C, 190°C/W (S8)
VIEW
PACKAGE 14-LEAD PDIP
PACKAGE 14-LEAD PLASTIC
TJMAX 150°C, 130°C/W TJMAX 150°C, 160°C/W
16389fc
LT1638/LT1639 ELECTRICAL CHARACTERISTICS
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. VOUT half supply, unless otherwise noted. (Note
SYMBOL PARAMETER Input Offset Voltage CONDITIONS LT1638 Packages 70°C 40°C 85°C LT1639 Packages 70°C 40°C 85°C LT1638 Package 70°C 40°C 85°C LT1638 Package 70°C 40°C 85°C Input Offset Voltage Drift (Note Input Offset Current (Note Input Bias Current (Note 0.1Hz 10Hz 1kHz 1kHz Differential Common Mode,
LT1638C/LT1639C, LT1638I/LT1639I 1050 1150 1450 1100 1350 1450
UNITS µV/°C µV/°C µVP-P nV/Hz pA/Hz
LT1638/LT1639 Packages LT1638MS8, LT1638DD
1500
Input Noise Voltage CMRR AVOL Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance Input Voltage Range Common Mode Rejection Ratio Large-Signal Voltage Gain
V/mV V/mV V/mV V/mV V/mV V/mV
(Note 500mV 2.5V, 70°C 40°C 85°C 500mV 4.5V, 70°C 40°C 85°C Load ISINK Load ISINK 10mA
1500
Output Voltage Swing
2.94 2.25 4.94 2.98 2.40 4.98
Output Voltage Swing High
Load ISOURCE Load ISOURCE 10mA
Short-Circuit Current (Note
Short Short Short Short
16389fc
LT1638/LT1639 ELECTRICAL CHARACTERISTICS
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. VOUT half supply, unless otherwise noted. (Note
SYMBOL PSRR PARAMETER Power Supply Rejection Ratio Reverse Supply Voltage Minimum Operating Supply Voltage Supply Current Amplifier (Note Gain Bandwidth Product (Note Slew Rate (Note 5kHz 70°C 40°C 85°C 70°C 40°C 85°C CONDITIONS 12.5V, 100µA Amplifier LT1638C/LT1639C, LT1638I/LT1639I
UNITS V/µs V/µs V/µs
0.210 0.185 0.170
1075
0.38
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. ±15V, VOUT unless otherwise noted. (Note
LT1638C/LT1639C, LT1638I/LT1639I SYMBOL PARAMETER Input Offset Voltage CONDITIONS LT1638 Packages 70°C 40°C 85°C LT1639 Packages 70°C 40°C 85°C LT1638 Package 70°C 40°C 85°C LT1638 DDPackage 70°C 40°C 85°C Input Offset Voltage Drift (Note CMRR AVOL Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance Input Voltage Range Common Mode Rejection Ratio Large-Signal Voltage Gain
1000 1100 1100 1200 1050 1250 1550 1250 1450 1550
UNITS µV/°C µV/°C µVP-P nV/Hz pA/Hz
LT1638/LT1639 Packages LT1638MS8, LT1638DD
0.1Hz 10Hz 1kHz 1kHz Differential Common Mode,
-15V ±14V, 70°C 40°C 85°C Load IOUT ±10mA
±14.9 ±13.7
V/mV V/mV V/mV
Output Voltage Swing
±14.95 ±14.0
16389fc
LT1638/LT1639 ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Short-Circuit Current (Note
denotes specifications which apply over specified temperature range, otherwise specifications 25°C. ±15V, VOUT unless otherwise noted. (Note
LT1638C/LT1639C, LT1638I/LT1639I CONDITIONS Short 70°C 40°C 85°C ±1.5V ±22V
UNITS
PSRR
Power Supply Rejection Ratio Supply Current Amplifier Gain Bandwidth Product
V/µs V/µs V/µs
5kHz 70°C 40°C 85°C ±10V, 70°C 40°C 85°C
0.225 0.18
1200
Slew Rate
denotes specifications which apply over full operating temperature range -40°C 125°C. VOUT Half Supply unless otherwise specified. (Note
SYMBOL PARAMETER Input Offset Voltage CONDITIONS LT1638S8
LT1639S
Input Offset Voltage Drift (Note Input Offset Current (Note Input Bias Current (Note CMRR AVOL Input Voltage Range Common Mode Rejection Ratio Large-Signal Voltage Gain 0.3V 0.3V 500mV 2.5V, 500mV 4.5V, Output Voltage Swing Load ISINK ISINK 10mA Load ISOURCE Load ISOURCE 10mA PSRR Power Supply Rejection Ratio Minimum Supply Voltage Reverse Supply Voltage Supply Current (Note Gain Bandwidth Product (Note Slew Rate (Note 12.5V, 100µA
LT1638H/LT1639H
UNITS µV/°C V/mV V/mV V/mV V/mV
1500 1500 1500
Output Voltage Swing High
V/µs V/µs
16389fc
5kHz
0.21
1075 0.38
LT1638/LT1639 ELECTRICAL CHARACTERISTICS
denotes specifications which apply over full operating temperature range -40°C 125°C, otherwise specifications 25°C. ±15V, VOUT VSHDN unless otherwise specified. (Note
SYMBOL PARAMETER Input Offset Voltage CONDITIONS LT1638S8
LT1638H/LT1639H ±14.8 ±13.4 ±1.35
UNITS µV/°C V/mV V/mV
LT1639S
CMRR AVOL
Input Offset Voltage Drift (Note Input Offset Current Input Bias Current Common Mode Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing -14.7V ±14V, Load IOUT IOUT ±10mA ±1.5V ±22V
PSRR
Power Supply Rejection Ratio Minimum Supply Voltage Supply Current Gain Bandwidth Product Slew Rate
V/µs V/µs
5kHz
±10V, Measure
0.225
1200
Note Absolute Maximum Ratings those values beyond which life device impaired. Note heat sink required keep junction temperature below absolute maximum. This depends power supply voltage many amplifiers shorted. Note LT1638C/LT1639C LT1638I/LT1639I guaranteed functional over operating temperature range -40°C 85°C. LT1638H/LT1639H guaranteed functional over operating temperature range 40°C 125°C. Note LT1638C/LT1639C guaranteed meet specified performance from 70°C designed, characterized expected meet specified performance from -40°C 85°C tested sampled these temperatures. LT1638I/LT1639I guaranteed meet specified performance from -40°C 85°C. LT1638H/LT1639H guaranteed meet specified performance from -40°C 125°C.
Note limits guaranteed correlation ±15V ±22V tests. Note limits guaranteed correlation ±15V ±22V tests. Note Guaranteed correlation slew rate ±15V, ±15V tests. Note This specification implies typical input offset voltage maximum input offset voltage 44V. Note This parameter 100% tested. Note specified package with minimal heat spreading metal. Using expanded metal area layers board reduces this value.
16389fc
LT1638/LT1639 TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current Supply Voltage
SUPPLY VOLTAGE -55°C 25°C 125°C
CHANGE INPUT OFFSET VOLTAGE (µV)
SUPPLY CURRENT AMPLIFIER (µA)
-100 -200 -300 25°C 125°C -55°C
INPUT BIAS CURRENT (nA)
Output Saturation Voltage Load Current (Output High)
OUTPUT SATURATION VOLTAGE OUTPUT SATURATION VOLTAGE ±2.5V 30mV
125°C 25°C
25°C
125°C
OUTPUT SATURATION VOLTAGE (mV)
-55°C
0.01 0.001
0.01 SOURCING LOAD CURRENT (mA)
0.1Hz 10Hz Noise Voltage
INPUT NOISE VOLTAGE DENSITY (nV/Hz)
±2.5 NOISE VOLTAGE (400nV/DIV)
INPUT NOISE CURRENT DENSITY (pA/Hz)
TIME (SEC)
1638/39
Minimum Supply Voltage
10000 8000 6000
Input Bias Current Common Mode Voltage
-55°C
125°C 25°C
TOTAL SUPPLY VOLTAGE
1638/39
COMMON MODE VOLTAGE
1638/39
Output Saturation Voltage Load Current (Output Low)
±2.5V 30mV
Output Saturation Voltage Input Overdrive
±2.5V LOAD OUTPUT HIGH
0.01 -55°C
OUTPUT
0.001 0.001
0.01 SINKING LOAD CURRENT (mA)
1638/39
INPUT OVERDRIVE (mV)
1638/39
1638/39
Noise Voltage Density Frequency
FREQUENCY (Hz)
1638/39
Input Noise Current Density Frequency
FREQUENCY (Hz)
1638/39
1638/39
16389fc
LT1638/LT1639 TYPICAL PERFORMANCE CHARACTERISTICS
Gain Phase Shift Frequency
PHASE ±2.5V
GAIN BANDWIDTH PRODUCT (kHz)
SLEW RATE (V/µs)
GAIN (dB)
GAIN
FREQUENCY (kHz)
Gain Bandwidth Product Phase Margin Supply Voltage
1500
1500
POWER SUPPLY REJECTION RATIO (dB)
GAIN BANDWIDTH PRODUCT (kHz)
1400 PHASE MARGIN 1300 GAIN BANDWIDTH
GAIN BANDWIDTH PRODUCT (kHz)
1200
1100
1000 TOTAL SUPPLY VOLTAGE
CMRR Frequency
COMMON MODE REJECTION RATIO (dB)
±15V
CHANNEL SEPARATION (dB)
OUTPUT IMPEDANCE
FREQUENCY (kHz)
1638/39
1638/39
Gain Bandwidth Product Temperature
1500 1kHz 1400 1300 ±15V 1200 1100 1000 ±2.5V
0.30 0.55 0.50 0.60
Slew Rate Temperature
1000
RISING, ±15V RISING, ±2.5V
PHASE SHIFT (DEG)
0.45 0.40 0.35 FALLING, ±15V
FALLING, ±2.5V
TEMPERATURE (°C)
0.25
TEMPERATURE (°C)
1638/39
1638/39
Gain Bandwidth Product Phase Margin Load Resistance
1400 1300 PHASE MARGIN 1200 1100 1000 LOAD RESISTANCE GAIN BANDWIDTH PRODUCT
1638/39
PSRR Frequency
2.5V 100k 1kHz
FREQUENCY (kHz) 1000
1638/39
±2.5V
PHASE MARGIN (DEG)
PHASE MARGIN (DEG)
POSITIVE SUPPLY
NEGATIVE SUPPLY
Channel Separation Frequency
±15V
Output Impedance Frequency
2.5V
1000
1638/39
FREQUENCY (kHz)
1638/39
FREQUENCY (kHz)
1000
1638/39
16389fc
LT1638/LT1639 TYPICAL PERFORMANCE CHARACTERISTICS
Settling Time 0.1% Output Step
±15V 2.5V ISOURCE 150µA
OUTPUT SWING (VP-P)
OUTPUT STEP
OVERSHOOT
SETTLING TIME (µs)
Total Harmonic Distortion Noise Frequency
VOUT 2VP-P 1.2V
NOISE
NOISE
±1.5V 0.5V 2.5V 0.2V 2.2V
NOISE
0.01
0.001 0.01
FREQUENCY (Hz)
Open-Loop Gain
CHANGE INPUT OFFSET VOLTAGE (50µV/DIV)
-20V
-10V OUTPUT VOLTAGE (5V/DIV)
1638/39
Capacitive Load Handling, Overshoot Capacitive Load
Undistorted Output Swing Frequency
±15V DISTORTION
2.5V
1000 CAPACITIVE LOAD (pF)
10000
1638/39
FREQUENCY (kHz)
1638/39
Total Harmonic Distortion Noise Load Resistance
TOTAL 2VP-P 1kHz
Total Harmonic Distortion Noise Output Voltage
10k, 1kHz HALF SUPPLY ±1.5V ±1.5V
0.01
0.01
1638/39
0.001
0.001
LOAD RESISTANCE GROUND
OUTPUT VOLTAGE (VP-P)
1638/39
1638/39
Large-Signal Response
±15V
Small-Signal Response
±15V
1638/39
±15V 15pF
1638/39
1638/39
16389fc
LT1638/LT1639
APPLICATIONS INFORMATION
Supply Voltage positive supply LT1638/LT1639 should bypassed with small capacitor (typically 0.1µF) within inch pin. When driving heavy loads additional 4.7µF electrolytic capacitor should used. When using split supplies, same true negative supply pin. LT1638/LT1639 protected against reverse battery voltages 18V. event reverse battery condition occurs, supply current less than 1nA. LT1638/LT1639 shut down removing this condition input bias current less than 0.1nA, even inputs above negative supply. temperatures greater than 70°C, when operating LT1638/LT1639 total supplies more, supply must brought faster than 1V/µs. Increasing bypass capacitor and/or adding small resistor series with supply will limit rise time. Inputs LT1638/LT1639 have input stages, (see Simplified Schematic), resulting three distinct operating regions shown Input Bias Current Common Mode typical performance curve. input voltages about 0.8V more below input stage active input bias current typically 20nA. When input common mode voltage within 0.5V positive rail, stage operating input bias current typically 40nA. Increases temperature will cause voltage which operation switches from input stage input stage move towards input offset voltage stage untrimmed typically 600µV. Schottky diode collector each transistor allow LT1638/LT1639 operate over top, with either both inputs above about 0.3V above input transistor fully saturated input bias current typically room temperature. input offset voltage typically when operating above LT1638/LT1639 will operate with inputs above regardless inputs protected against excursions below internal resistor series with each input diode from input negative supply. inputs more than below additional external resistor required. resistor will protect input against excursions much below input stage LT1638/LT1639 incorporates phase reversal protection prevent output from phase reversing inputs below There clamping diodes between inputs maximum differential input voltage 44V. Output output LT1638/LT1639 swing within 20mV positive rail with load, within negative rail with load. When monitoring voltages within 20mV positive rail within negative rail, gain should taken keep output from clipping. LT1638/LT1639 capable sinking sourcing over 40mA ±15V supplies; sourcing current capability reduced 20mA total supplies noted electrical characteristics. LT1638/LT1639 internally compensated drive least 200pF capacitance under output loading conditions. 0.22µF capacitor series with resistor between output ground will compensate these amplifiers larger capacitive loads, 1000pF, output currents.
Optional Output Compensation Capacitive Loads Greater than 200pF
LT1638
0.22µF
1000pF
Distortion There main contributors distortion amps: output crossover distortion output transitions from sourcing sinking current distortion caused
16389fc
LT1638/LT1639
APPLICATIONS INFORMATION
nonlinear common mode rejection. operating inverting there common mode induced distortion. operating input stage (input within 0.8V CMRR very good, typically 98dB. When LT1638 switches between input stages there significant nonlinearity CMRR. Lower load resistance increases output crossover distortion, effect input stage transition distortion. lowest distortion LT1638/LT1639 should operated single supply, with output always sourcing current with input voltage swing between ground 0.8V). Typical Performance Characteristics curves. Gain open-loop gain almost independent load when output sourcing current. This optimizes performance single supply applications where load returned ground. typical performance curve Open-Loop Gain various loads shows details.
100k
TYPICAL APPLICATIONS
With 1.2MHz bandwidth, Over-The-Top capability, reverse-battery protection rail-to-rail input output features, LT1638/LT1639 ideal candidates general purpose applications. lowpass slope limiting filter Figure limits maximum dV/dT (not frequency) that passes. When input signal differs from output forward diode drop, will turn With diode voltage across will constant fixed current, VDIODE/R2, will flow through capacitor charging linearly instead exponentially. maximum slope that circuit will pass equal VDIODE divided (R2)(C1). matter fast input changes output will never change faster than dV/dT diodes (R2)(C).
OUT(MAX) (R2)(C1) 10k, 100k, 1000pF 0.006V/µs OUT(MAX)
LT1638 VOUT
1638/39
Figure Lowpass Slope Limiting Filter
modification this application shown Figure using references instead diodes maximum slope. using references, slope independent temperature. scope photo shows 1VP-P, 2kHz input signal with pulse added sine wave; circuit passes 2kHz signal limits slope pulse.
LT1639 100k
LT1634-1.2V
100k LT1634-1.2V LT1639 VOUT
LT1639
50k, 500pF, MAXIMUM SLOPE 0.048V/µs 1.2V (R2)(C1) IN4148
100k
1638/39
Response Slope Limiting Filter
VOUT
1638/39 TA02
Figure Lowpass Slope Limiting Filter with
16389fc
LT1638/LT1639
TYPICAL APPLICATIONS
application Figure utilizes Over-The-Top capabilities LT1638. resistor senses load current while transistor form closed loop making collector current proportional load current. convenient monitor, load resistor converts current into voltage. positive supply rail, limited supply could high 44V.
LOAD ILOAD VOUT (2)(ILOAD)
LT1638 2N3904 4.3V
1638/39
Figure Positive Supply Rail Current Sense
PLIFIED SCHE ATIC
10µA
AMPLIFIER
Figure application uses LT1638 conjunction with LT1634 micropower shunt reference. supply current also biases reference. drop across resistor fixed 1.2V generating output current equal 1.2V/R1.
LT1634-1.2
LT1638 IOUT 1.2V IOUT
1638/39
Figure Current Source
1638/39
16389fc
LT1638/LT1639
PACKAGE DESCRIPTION
Package 8-Lead Plastic (3mm 3mm)
(Reference 05-08-1698)
0.115 0.675 ±0.05 0.38 0.10
±0.05 1.65 ±0.05 2.15 ±0.05 SIDES) PACKAGE OUTLINE 0.28 0.05 0.50 2.38 ±0.05 SIDES) RECOMMENDED SOLDER PITCH DIMENSIONS MARK
0.889 0.127 (.035 .005)
5.23 (.206)
3.45 (.126 .136)
0.254 (.010)
0.42 0.04 (.0165 .0015)
0.65 (.0256)
RECOMMENDED SOLDER LAYOUT
DETAIL 0.18 (.077) NOTE: DIMENSIONS MILLIMETER/(INCH) DRAWING SCALE DIMENSION DOES INCLUDE MOLD FLASH, PROTRUSIONS GATE BURRS. MOLD FLASH, PROTRUSIONS GATE BURRS SHALL EXCEED 0.152mm (.006") SIDE DIMENSION DOES INCLUDE INTERLEAD FLASH PROTRUSIONS. INTERLEAD FLASH PROTRUSIONS SHALL EXCEED 0.152mm (.006") SIDE LEAD COPLANARITY (BOTTOM LEADS AFTER FORMING) SHALL 0.102mm (.004")
3.00 ±0.10 SIDES)
1.65 0.10 SIDES)
(DD8) 0203
0.200
0.75 ±0.05
0.28 0.05 2.38 ±0.10 SIDES)
0.50
0.00 0.05
BOTTOM VIEW-EXPOSED NOTE: DRAWING MADE JEDEC PACKAGE OUTLINE M0-229 VARIATION (WEED-1) DIMENSIONS MILLIMETERS DIMENSIONS EXPOSED BOTTOM PACKAGE INCLUDE MOLD FLASH. MOLD FLASH, PRESENT, SHALL EXCEED 0.15mm SIDE EXPOSED SHALL SOLDER PLATED
Package 8-Lead Plastic MSOP
(Reference 05-08-1660)
3.00 0.102 (.118 .004) (NOTE 0.52 (.206)
DETAIL
4.90 0.15 (1.93 .006)
3.00 0.102 (.118 .004) NOTE
GAUGE PLANE 0.53 0.015 (.021 .006) 1.10 (.043) 0.86 (.034)
SEATING PLANE
0.22 0.38 (.009 .015)
0.65 (.0256)
0.13 0.076 (.005 .003)
MSOP (MS8) 0802
16389fc
LT1638/LT1639
PACKAGE DESCRIPTION
Package 8-Lead PDIP (Narrow .300 Inch)
(Reference 05-08-1510)
.400* (10.160) .300 .325 (7.620 8.255) .045 .065 (1.143 1.651) .130 .005 (3.302 0.127)
.008 .015 (0.203 0.381) +.035 .325 -.015
.065 (1.651) .120 (3.048) .020 (0.508) .018 .003 (0.457 0.076)
1002
8.255
+0.889 -0.381
INCHES MILLIMETERS *THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .010 INCH (0.254mm)
NOTE: DIMENSIONS
.245
.030 ±.005
NOTE: DIMENSIONS
INCHES (MILLIMETERS) DRAWING SCALE THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .006" (0.15mm)
.008 .010 (0.203 0.254)
.255 .015* (6.477 0.381)
.100 (2.54)
Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference 05-08-1610)
.189 .197 (4.801 5.004) NOTE
.045 ±.005 .050
.160 ±.005
.228 .244 (5.791 6.197)
.150 .157 (3.810 3.988) NOTE
RECOMMENDED SOLDER LAYOUT
.010 .020 (0.254 0.508)
.053 .069 (1.346 1.752)
.004 .010 (0.101 0.254)
.016 .050 (0.406 1.270)
.014 .019 (0.355 0.483)
.050 (1.270)
0502
16389fc
LT1638/LT1639
PACKAGE DESCRIPTION
Package 14-Lead PDIP (Narrow .300 Inch)
(Reference 05-08-1510)
.770* (19.558)
.300 .325 (7.620 8.255)
.008 .015 (0.203 0.381) +.035 .325 -.015 .005 (0.125) .100 (2.54)
+0.889 8.255 -0.381
INCHES MILLIMETERS *THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .010 INCH (0.254mm)
NOTE: DIMENSIONS
.045 ±.005 .050
.245
.160 ±.005 .228 .244 (5.791 6.197)
.030 ±.005
RECOMMENDED SOLDER LAYOUT .010 .020 (0.254 0.508)
NOTE: DIMENSIONS
INCHES .008 .010 (MILLIMETERS) (0.203 0.254) DRAWING SCALE THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED .006" (0.15mm)
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.
.255 .015* (6.477 0.381)
.130 .005 (3.302 0.127) .020 (0.508)
.045 .065 (1.143 1.651)
.065 (1.651) .120 (3.048) .018 .003 (0.457 0.076)
1002
Package 14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference 05-08-1610)
.337 .344 (8.560 8.738) NOTE
.150 .157 (3.810 3.988) NOTE
.053 .069 (1.346 1.752)
.004 .010 (0.101 0.254)
.016 .050 (0.406 1.270)
.014 .019 (0.355 0.483)
.050 (1.270)
0502
16389fc
LT1638/LT1639
TYPICAL APPLICATION
battery monitor Figure also demonstrates LT1638's ability operate with inputs above positive rail. this application, conventional amplifier would limited battery voltage between ground, LT1638 handle battery voltages high 44V. When battery charging, senses voltage drop across output causes drain sufficient current through balance input Likewise, form closed loop when battery discharging. current through proportional current this current flows into converted into voltage. buffers amplifies voltage across compares output determine polarity current through scale factor VOUT with open 1V/A. With closed scale factor 1V/100mA currents 500µA measured.
CHARGER VOLTAGE
IBATT
LOAD
IBATT
VOUT AMPS (RS)(RG /RA)(GAIN) GAIN
RELATED PARTS
PART NUMBER
LT1078/LT1079 LT2078/LT2079 LT1178/LT1179 LT2178/LT2179 LT1366/LT1367 LT1490/LT1491 LT1636
DESCRIPTION
Dual/Quad 55µA Max, Single Supply, Precision Amps Dual/Quad 17µA Max, Single Supply, Precison Amps Dual/Quad Precision, Rail-to-Rail Input Output Amps Dual/Quad Over-The-Top Micropower, Rail-to-Rail Input Output Amps Single Over-The-Top Micropower Rail-to-Rail Input Output
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7417
(408) 432-1900 FAX: (408) 434-0507
LT1639
2N3904
RA',
LT1639 LOGIC
LT1639
2N3904
LOGIC HIGH (5V) CHARGING LOGIC (0V) DISCHARGING
RB', VBATT
LT1639 VOUT
90.9k
1638/39
OPEN, GAIN CLOSED, GAIN
Figure Battery Monitor
COMMENTS
Input/Output Common Mode Includes Ground, 70µV VOS(MAX) 2.5µV/°C Drift (Max), 200kHz GBW, 0.07V/µs Slew Rate Input/Output Common Mode Includes Ground, 70µV VOS(MAX) 4µV/°C Drift (Max), 85kHz GBW, 0.04V/µs Slew Rate 475µV VOS(MAX), 500V/mV AVOL(MIN), 400kHz Single Supply Input Range: 0.4V 44V, Micropower 50µA Amplifier, Rail-to-Rail Input Output, 200kHz 55µA Supply Current, Extends above VEE, Independent VCC; MSOP Package, Shutdown Function
16389fc LT/LT 0305 PRINTED
www.linear.com
LINEAR TECHNOLOGY CORPORATION 1998

LT1638/LT1639 1.2MHz, 0.4V/µs Over-The-Top Micropower Rail-to-Rail Inp

Top Searches for this datasheet

Other recent searches