DESCRIPTIO 2.7nV/Hz 4.2nV/Hz 11V/µs 65MHz 70µV 100µV Million 3.1m
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LT1126/LT1127 Dual/Quad Decompensated Noise, High Speed Precision
DESCRIPTIO
2.7nV/Hz 4.2nV/Hz 11V/µs 65MHz 70µV 100µV Million 3.1mA 112dB 116dB
100% Tested Voltage Noise Slew Rate Gain-Bandwidth Product Offset Voltage, Prime Grade Grade High Voltage Gain Supply Current Amplifier Common Mode Rejection Power Supply Rejection Available 8-Pin Package
LT1126 dual LT1127 quad high performance, decompensated amps that offer higher slew rate bandwidth than LT1124 dual LT1125 quad operational amplifiers. enhanced performance available without degrading specs LT1124/ LT1125. Both LT1126/LT1127 stable gain more. design, processing, testing device, particular attention been paid optimization entire distribution several parameters. Slew rate, gain-bandwidth, 1kHz noise 100% tested each individual amplifier. Consequently, specifications even lowest cost grades (the LT1126C LT1127C) have been enhanced. Power consumption dual LT1126 less than half OP-37s. power high performance 8-pin package makes LT1126 first choice surface mounted systems where board space restricted.
Protected U.S. patents 4,775,884 4,837,496.
APPLICATI
Three Instrumentation Amplifiers Noise Signal Processing Active Filters Microvolt Accuracy Threshold Detection Strain Gauge Amplifiers Direct Coupled Audio Gain Stages Tape Head Preamplifiers Microphone Preamplifiers Accelerometer Amplifiers Infrared DetectorLow Noise, Wide Bandwidth Instrumentation Amplifier
INPUT
LT1127
6.2k
VOLTAGE NOISE DENSITY (nV/Hz)
LT1127 INPUT 6.2k LT1127
OUTPUT
GAIN 1000, BANDWIDTH 480kHz INPUT REFERRED NOISE 4.5nV/ 1kHz, 6µVRMS OVER BANDWIDTH
LT1126 TA01
Voltage Noise Frequency
±15V 25°C MAXIMUM CORNER 2.3Hz FREQUENCY (Hz)
LT1126 TA07
TYPICAL
1000
LT1126/LT1127 ABSOLUTE RATI
Operating Temperature Range LT1126AM/LT1126M LT1127AM/LT1127M -55°C 125°C LT1126AC/LT1126C LT1127AC/LT1127C -40°C 85°C Storage Temperature Range Grades -65°C 150°C Supply Voltage ±22V Input Voltage Equal Supply Voltage Output Short Circuit Duration Indefinite Differential Input Current (Note 25mA Lead Temperature (Soldering, sec.). 300°C
PACKAGE/ORDER ATIO
VIEW
PACKAGE 8-LEAD PLASTIC SOIC NOTE: THIS CONFIGURATION DIFFERS FROM 8-PIN CONFIGURATION. INSTEAD, FOLLOWS INDUSTRY STANDARD LT1013DS8 PACKAGE LOCATIONS
LT1126 POI01
ORDER PART NUMBER LT1126CS8 PART MARKING 1126
VIEW
LT1127CS
PACKAGE 16-LEAD PLASTIC
LT1126 POI03
ELECTRICAL CHARACTERISTICS
SYMBOL Time PARAMETER Input Offset Voltage Long Term Input Offset Voltage Stability Input Offset Current Input Bias Current Input Noise Voltage LT1126 LT1127
±15V, 25°C, unless otherwise noted.
LT1126AM/AC LT1127AM/AC LT1126M/C LT1127M/C
CONDITIONS (Note
LT1126 LT1127 0.1Hz 10Hz (Notes
VIEW
ORDER PART NUMBER LT1126AMJ8 LT1126MJ8 LT1126CJ8 LT1126ACN8 LT1126CN8
PACKAGE 8-LEAD CERAMIC
PACKAGE 8-LEAD PLASTIC
LT1126 POI02
VIEW
LT1127AMJ LT1127MJ LT1127CJ LT1127ACN LT1127CN
PACKAGE PACKAGE 14-LEAD CERAMIC 14-LEAD PLASTIC
LT1126 POI04
UNITS µV/Mo nVp-p
LT1126/LT1127
ELECTRICAL CHARACTERISTICS ±15V, 25°C, unless otherwise noted.
SYMBOL PARAMETER Input Noise Voltage Density CMRR PSRR AVOL VOUT Input Noise Current Density Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Gain-Bandwidth Product Open Loop Output Resistance Supply Current Amplifier Channel Separation CONDITIONS (Note 10Hz (Note 1000Hz (Note 10Hz 1000Hz ±12V ±18V 10k, ±10V ±10V (Notes 10kHz (Note 10Hz (Note ±10V, LT1126AM/AC LT1127AM/AC 12.0 12.8 17.0 13.0 13.8 LT1126M/C LT1127M/C 12.0 12.8 15.0 12.5 13.8 UNITS nV/Hz nV/Hz pA/Hz pA/Hz V/µV V/µV V/µs
ELECTRICAL CHARACTERISTICS ±15V, 55°C 125°C, unless otherwise noted.
SYMBOL Temp CMRR PSRR AVOL VOUT PARAMETER Input Offset Voltage Average Input Offset Voltage Drift Input Offset Current Input Bias Current Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Supply Current Amplifier CONDITIONS (Note LT1126 LT1127 (Note LT1126 LT1127
LT1126AM LT1127AM 10.0 13.6
LT1126M LT1127M
UNITS µV/°C V/µV V/µV V/µs
±11.3V ±18V 10k, ±10V ±10V (Notes
11.3 12.5
11.3 10.0 12.0 13.6
denotes specifications which apply over full operating temperature range. Note Typical parameters defined yield parameter distributions individual amplifiers; i.e., LT1127s LT1126s) typically amps 120) will better than indicated specification. Note This parameter 100% tested each individual amplifier. Note This parameter sample tested only. Note This parameter 100% tested. Note inputs protected back-to-back diodes. Current limiting resistors used order achieve noise. differential input voltage exceeds ±1.4V, input current should limited 25mA.
Note Slew rate measured -10; input signal ±1V, output measured ±5V. Note 0.1Hz 10Hz noise inferred from 10Hz noise voltage density test. test circuit frequency response curve 0.1Hz 10Hz tester Applications Information section LT1007 LT1028 datasheets. Note This parameter guaranteed tested. Note LT1126 LT1127 tested quality assurance sampled -40°C 85°C. These specifications guaranteed design, correlation and/or inference from 55°C, 0°C, 25°C, 70°C and/or 125°C tests.
LT1126/LT1127
ELECTRICAL CHARACTERISTICS ±15V, 70°C, unless otherwise noted.
SYMBOL VOS/T CMRR PSRR AVOL VOUT PARAMETER Input Offset Voltage Average Input Offset Voltage Drift Input Offset Current Input Bias Current Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Supply Current Amplifier CONDITIONS (Note LT1126 LT1127 (Note LT1126 LT1127
±11.5V ±18V 10k, ±10V ±10V (Notes
11.5 12.5
LT1126AC LT1127AC 12.4 15.0 13.7 10.5
LT1126C LT1127C 11.5 12.4 14.0 12.0 13.7 10.5
UNITS µV/°C V/µV V/µV V/µs
ELECTRICAL CHARACTERISTICS
SYMBOL CMRR PSRR AVOL VOUT PARAMETER Input Offset Voltage Average Input Offset Voltage Drift Input Offset Current Input Bias Current Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Supply Current Amplifier LT1126 LT1127 LT1126 LT1127
±15V, -40°C 85°C, unless otherwise noted. (Note
LT1126AC LT1127AC
CONDITIONS (Note
LT1126C LT1127C 11.4 12.2 12.0 12.0 13.6 10.2
UNITS µV/°C V/µV V/µV V/µs
±11.4V ±18V 10k, ±10V ±10V (Note
11.4 12.5
12.2 12.0 13.6 10.2
TYPICAL PERFOR CHARACTERISTICS
typical behavior many LT1126/LT1127 parameters identical LT1124/LT1125. Please refer LT1124/LT1125 data sheet following performance characteristics:
0.1Hz 10Hz Voltage Noise 0.01Hz Voltage Noise Current Noise Frequency Input Bias Offset Current Temperature Output Short Circuit Current Time Input Bias Current Over Common Mode Range Voltage Gain Temperature Input Offset Voltage Drift Distribution Offset Voltage Drift with Temperature Representative Units Output Voltage Swing Load Current Common Mode Limit Temperature Channel Separation Frequency Warm-Up Drift Power Supply Rejection Ratio Frequency
LT1126/LT1127
TYPICAL PERFOR CHARACTERISTICS
Gain, Phase Shift Frequency
±15V 25°C 10pF
VOLTAGE GAIN (dB)
FREQUENCY (MHz)
LT1126 TPC01
GAIN
Voltage Gain Frequency
VOLTAGE GAIN (dB)
100k
SUPPLY CURRENT AMPLIFIER (mA)
COMMON MODE REJECTION RATIO (dB)
±15V 25°C
0.01 100M
FREQUENCY (Hz)
LT1126 TPC04
Total Harmonic Distortion Noise Frequency Inverting Gain
TOTAL HARMONIC DISTORTION NOISE TOTAL HARMONIC DISTORTION NOISE
2k/15pF 20Vp-p -10, -100 MEASUREMENT BANDWIDTH 10Hz 80kHz
0.010
0.010
2k/15pF 20Vp-p +10, +100 MEASUREMENT BANDWIDTH 10Hz 80kHz +100
INTERMODULATION DISTORTION (IMD)
-100 0.001
0.0001
FREQUENCY (Hz)
*See LT1115 data sheet definition CCIF testing
LT1126 TPC07
Small-Signal Transient Response
Large-Signal Transient Response
50mV
PHASE SHIFT (DEGREES)
50mV
AVCL -10V ±15V 15pF
LT1126 TPC02
AVCL -10V ±15V
LT1126 TPC03
Common Mode Rejection Ratio Frequency
25°C ±15V ±10V
Supply Current Supply Voltage
125°C 25°C -55°C
FREQUENCY (Hz)
LT1126 TPC05
SUPPLY VOLTAGE
LT1126 TPC06A
Total Harmonic Distortion Noise Frequency Non-Inverting Gain
Intermodulation Distortion (CCIF Method)* Frequency
2k/15pF (IM) 1kHz 13.5kHz 20Vp-p MEASUREMENT BANDWIDTH 10Hz 80kHz
0.010
0.001
0.001
LT1126 FREQUENCY (Hz)
LT1126 TPC09
0.0001
FREQUENCY (Hz)
LT1126 TPC08
0.0001
LT1126/LT1127
APPLICATI ATIO
High Speed Operation
Matching Specification
many applications performance system depends matching between amps, rather than individual characteristics devices. three instrumentation amplifier configuration shown this data sheet example. Matching characteristics 100% tested LT1126/LT1127. Some specifications guaranteed definition. example, 70µV maximum offset voltage implies that mismatch cannot more than 140µV. 112dB 2.5µV/V) CMRR means that worst case CMRR match 106dB (5µV/V). However, following table used estimate expected matching performance between sides LT1126, between amplifiers between amplifiers LT1127.
Expected Match
LT1126AM/AC LT1127AM/AC YIELD YIELD 0.35
PARAMETER Match, LT1126 LT1127 Temperature Coefficient Match Average Non-Inverting Match Non-Inverting CMRR Match PSRR Match
TYPICAL APPLICATI
Gain 1000 Amplifier with 0.01% Accuracy,
340k +15V
GAIN ERROR
LT1126 OUTPUT RN60C FILM RESISTORS -15V
INPUT
HIGH GAIN WIDE BANDWIDTH LT1126/LT1127 USEFUL FREQUENCY HIGH CLOSED LOOP GAIN AMPLIFIER APPLICATIONS. TYPICAL PRECISION HAVE OPEN LOOP GAIN MILLION WITH 500kHz BANDWIDTH. GAIN ERROR PLOT SHOWS, THIS DEVICE CAPABLE 0.1% AMPLIFYING ACCURACY 0.3Hz ONLY. EVEN INSTRUMENTATION RANGE SIGNALS VARY FASTER RATE. LT1126/LT1127 "GAIN PRECISION BANDWIDTH PRODUCT" TIMES HIGHER, SHOWN.
LT1126 TA03
When feedback around resistive (RF), pole will created with source resistance capacitance (RS, CS), amplifier input capacitance (CIN 2pF). closed loop gain configurations with kilohm range, this pole create excess phase shift even oscillation. small capacitor (CF) parallel with eliminates this problem. With CIN) effect feedback pole completely removed.
OUTPUT
LT1126 TA02
LT1126M/C LT1127M/C YIELD YIELD UNITS µV/°C
Gain Error Frequency Closed Loop Gain 1000
TYPICAL PRECISION
TRIM
0.01
LT1126/LT1127 CLOSED LOOP GAIN OPEN LOOP GAIN
LT1126 TA04
GAIN ERROR 0.001
FREQUENCY (Hz)
LT1126/LT1127
TYPICAL APPLICATI
1.1k
Noise, Wideband, Gain Amplifier with High Input Impedance
LT1127
2.4k
7.5k
1.1k 2.4k
LT1127 OUTPUT
LT1127
INPUT
1.1k 2.4k
LT1127
-3dB BANDWIDTH GAIN BANDWIDTH PRODUCT 91.0MHz WIDEBAND NOISE 3.2nV/Hz 1.85nV/Hz REFERRED INPUT NOISE FULL BANDWIDTH 21.2µV REFERRED INPUT
LT1126 TA05
SCHE ATIC DIAGRA
NON-INVERTING INPUT
67pF 200µA 200µA 100µA 20pF
INVERTING INPUT
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.
(1/2 LT1126, LT1127)
360µA 570µA 100µA
200pF
3.6k
3.6k
OUTPUT
LT1126 TA06
LT1126/LT1127
PACKAGE DESCRIPTIO
Package 8-Lead Ceramic
160°C 100°C/W
0.008 0.018 (0.203 0.460) 0.385 0.025 (9.779 0.635) 0.290 0.320 (7.366 8.128)
Package 8-Lead Plastic
140°C 130°C/W
0.300 0.320 (7.620 8.128) 0.065 (1.651) 0.009 0.015 (0.229 0.381) +0.025 0.325 -0.015
(8.255 +0.635) -0.381
Package 8-Lead Plastic SOIC
140°C 190°C/W
0.010 0.020 (0.254 0.508)
0.016 0.050 0.406 1.270
Package 14-Lead Ceramic
160°C 80°C/W
0.290 0.320 (7.366 8.128)
0.008 0.018 (0.203 0.460) 0.385 0.025 (9.779 0.635)
Package 14-Lead Plastic
140°C 110°C/W
0.300 0.325 (7.620 8.255)
0.009 0.015 (0.229 0.381) +0.025 0.325 -0.015
(8.255 +0.635) -0.381
Package 16-Lead Plastic
140°C 130°C/W
0.005 (0.127)
0.291 0.299 (7.391 7.595) (NOTE 0.010 0.029 (0.254 0.737)
0.009 0.013 (0.229 0.330)
NOTE
0.016 0.050 (0.406 1.270) NOTE: IDENT, NOTCH CAVITIES BOTTOM PACKAGES MANUFACTURING OPTIONS. PART SUPPLIED WITH WITHOUT OPTIONS. THESE DIMENSIONS INCLUDE MOLD FLASH PROTRUSIONS. MOLD FLASH PROTRUSIONS SHALL EXCEED 0.006 INCH (0.15mm).
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, 95035-7487
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
Dimensions inches (millimeters) unless otherwise noted.
0.200 (5.080) 0.015 0.060 (0.381 1.524) 0.005 (0.127) 0.405 (10.287)
0.025 (0.635)
0.220 0.310 (5.588 7.874)
0.038 0.068 (0.965 1.727) 0.014 0.026 (0.360 0.660) 0.125 3.175 0.100 0.010 (2.540 0.254) 0.055 (1.397)
1291
0.045 0.065 (1.143 1.651)
0.130 0.005 (3.302 0.127)
0.400 (10.160)
0.045 0.015 (1.143 0.381) 0.100 0.010 (2.540 0.254)
0.125 (3.175)
0.020 (0.508)
0.250 0.010 (6.350 0.254)
0.018 0.003 (0.457 0.076)
1291
0.189 0.197 (4.801 5.004) 0.053 0.069 (1.346 1.753) 0.004 0.010 (0.102 0.254) 0.228 0.244 (5.791 6.198) 0.014 0.019 (0.356 0.483) 0.050 (1.270) 0.150 0.157 (3.810 3.988)
0.008 0.010 (0.203 0.254)
1291
0.200 (5.080)
0.005 (0.127)
0.785 (19.939)
0.015 0.060 (0.381 1.524) 0.038 0.068 (0.965 1.727) 0.014 0.026 (0.360 0.660) 0.100 0.010 (2.540 0.254) 0.125 (3.175)
0.025 (0.635)
0.220 0.310 (5.588 7.874)
0.098 (2.489)
1291
0.015 (0.380) 0.130 0.005 (3.302 0.127)
0.045 0.065 (1.143 1.651)
0.065 (1.651)
0.770 (19.558)
0.260 0.010 (6.604 0.254)
0.075 0.015 (1.905 0.381)
0.018 0.003 (0.457 0.076) 0.100 0.010 (2.540 0.254)
0.125 (3.175)
1291
0.093 0.104 (2.362 2.642)
0.037 0.045 (0.940 1.143)
0.398 0.413 (10.109 10.490) (NOTE
0.050 (1.270)
0.004 0.012 (0.102 0.305)
NOTE
0.394 0.419 (10.007 10.643)
0.014 0.019 (0.356 0.482)
BA/GP 0192
LINEAR TECHNOLOGY CORPORATION 1992
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