LT1102IN8

LT1102_07 LINER | Alldatasheet

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■ Slew Rate: 30V/μs ■ Gain-Bandwidth Product: 35MHz ■ Settling Time (0.01%): 3μs ■ Overdrive Recovery: 0.4μs ■ Gain Error: 0.05% Max ■ Gain Drift: 5ppm/°C ■ Gain Nonlinearity: 16ppm Max ■ Offset Voltage (Input + Output): 600μV Max – Drift with Temperature: 2μV/°C ■ Input Bias Current: 40pA Max ■ Input Offset Current: 40pA Max – Drift with Temperature (to 70°C): 0.5pA/°C The LT 1102 is the first fast FET input instrumentation amplifier offered in the low cost, space saving 8-pin packages. Fixed gains of 10 and 100 are provided with excellent gain accuracy (0.01%) and non-linearity (3ppm). No external gain setting resistor is required. Slew rate, settling time, gain-bandwidth product, overdrive recovery time are all improved compared to competitive high speed instrumentation amplifiers. Industry best speed performance is combined with impressive precision specifications: less than 10pA input bias and offset currents, 180 μV offset voltage. Unlike other FET input instrumentation amplifiers, on the LT1102 there is no output offset voltage contribution to total error, and input bias currents do not double with every 10°C rise in temperature. Indeed, at 70°C ambient temperature the input bias current is only 40pA. Wideband Instrumentation Amplifier with ±150mA Output Current High Speed, Precision, JFET Input Instrumentation Amplifier (Fixed Gain = 10 or 100)

FEATURES

■ Fast Settling Analog Signal Processing ■ Multiplexed Input Data Acquisition Systems ■ High Source Impedance Signal Amplification from High Resistance Bridges, Capacitance Sensors, Photodetector Sensors ■ Bridge Amplifier with < 1Hz Lowpass Filtering APPLICATIO SU V+ = 15V LT1102 BIAS R OUTLT1010 V– = –15V OUTPUT = ±10V INTO 75Ω TO 330kHz (R = 50Ω) ±10V INTO 200Ω TO 330kHz (R = 200Ω) DRIVES 2.2nF CAP LOAD GAIN = 10, DEGRADED 0.01% DUE TO LT1010 LT1102 • TA01 FPO 5V/DIV FPOLT1102 • TA02G = 10 0.5 μs/DIV , LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

Consult LTC Marketing for parts specified with wider operating temperature ranges. (Note 1)ABSOLUTE AXI U RATI GSW WW U PACKAGE/ORDER I FOR ATIOUU W Operating Temperature Range TOP VIEW OUT G = 10 OUTPUT REF G = 10 +IN 90R 90R RR V+–IN V– (CASE) GROUND (REF) H PACKAGE 8-LEAD TO-5 METAL CAN ORDER PART NUMBER LT1102AMH LT1102MH LT1102ACH LT1102CH LT1102IN8 LT1102ACN8 LT1102CN8 OUT G = 10 OUTPUT REF G = 10 +IN –IN GROUND (REF) 8 TOP VIEW N8 PACKAGE 8-LEAD PDIP J8 PACKAGE 8-LEAD CERDIP LT1102 90R90R 9 = 1.8k RR 9R9R ORDER PART NUMBER LT1102MJ8 LT1102CJ8 LT1102 • POI01 TJMAX = 100°C, θJA = 130°C/W OBSOLETE PACKAGE Consider the N8 Package for Alternate Source OBSOLETE PACKAGE Consider the N8 Package for Alternate Source Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GE Gain Error V O = ±10V, RL = 50k or 2k 0.010 0.050 0.012 0.070 % GNL Gain Nonlinearity G = 100, R L = 50k 3 14 4 18 ppm G = 100, RL = 2k 8 20 8 25 ppm G = 10, RL = 50k or 2k 7 16 7 30 ppm VOS Input Offset Voltage 180 600 200 900 μV IOS Input Offset Current 3 40 4 60 pA IB Input Bias Current ±3 ±40 ±4 ±60 pA Input Resistance Common Mode V CM = –11V to 8V 10 12 1012 Ω VCM = 8V to 11V 10 11 1011 Ω Differential Mode 10 12 1012 Ω en Input Noise Voltage 0.1Hz to 10Hz 2.8 2.8 μVP-P Input Noise Voltage f O = 10Hz 37 37 nV/ √Hz Density f O = 1000Hz (Note 2) 19 30 20 nV/ √Hz Input Noise Current f O = 1000Hz, 10Hz (Note 3) 1.5 4 2 5 fA/ √Hz Density lnput Voltage Range ±10.5 ±11.5 ±10.5 ±11.5 V CMRR Common Mode 1k Source Imbalance, V CM = ±10.5V 84 98 82 97 dB Rejection Ratio PSRR Power Supply V S = ± 9V to ±18V 88 102 86 101 dB Rejection Ratio IS Supply Current 3.3 5.0 3.4 5.6 mA VO Maximum Output R L = 50k ±13.0 ±13.5 ±13.0 ±13.5 V Voltage Swing R L = 2k ±12.0 ±13.0 ±12.0 ±13.0 V BW Bandwidth G = 100 (Note 4) 120 220 100 220 kHz G = 10 (Note 4) 2.0 3.5 1.7 3.5 MHz SR Slew Rate G = 100, V IN = ±0.13V, VO = ±5V 12 17 10 17 V/ μs G = 10, VIN = ±1V, VO = ±5V 21 30 18 30 V/ μs Overdrive Recovery 50% Overdrive (Note 5) 400 400 ns Settling Time V O = 20V Step (Note 4) G = 100 to 0.05% 7 13 7 13 μs G = 100 to 0.01% 9 18 9 18 μs ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, TA = 25°C, Gain = 10 or 100, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GE Gain Error G = 100, V O = ±10V, RL = 50k or 2k 0.10 0.25 0.10 0.30 % G = 10, VO = ±10V, RL = 50k or 2k 0.05 0.12 0.06 0.15 % TCGE Gain Error Drift G = 100, R L = 50k or 2k 9 20 10 25 ppm/ °C (Note 6) G = 10, R L = 50k or 2k 5 10 6 14 ppm/ °C GNL Gain Nonlinearity G = 100, R L = 50k 20 70 24 90 ppm G = 100, RL = 2k 28 85 32 110 ppm G = 10, RL = 50k or 2k 9 20 9 24 ppm VOS Input Offset Voltage 300 1400 400 2000 μV ΔVOS/ΔT Input Offset Voltage Drift (Note 6) 2 8 3 12 μV/°C lOS Input Offset Current 0.3 4 0.4 6 nA IB Input Bias Current ±2 ±10 ±2.5 ±15 nA CMRR Common Mode V CM = ±10.3V 82 97 80 96 dB Rejection Ratio PSRR Power Supply V S = ±10V to ±17V 88 100 84 99 dB Rejection Ratio IS Supply Current T A = 125°C 2.5 2.5 mA VO Maximal Output R L = 50k ±12.5 ±13.2 ±12.5 ±13.2 V Voltage Swing R L = 2k ±12.0 ±12.6 ±12.0 ±12.6 V ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, Gain = 10 or 100, –55°C ≤ TA ≤ 125°C for AM/M grades, –40 °C ≤ TA ≤ 85°C for I grades, unless otherwise noted. LT1102AC LT1102C SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS GE Gain Error G = 100, V O = ±10V, RL = 50k or 2k 0.04 0.11 0.05 0.14 % G = 10, VO = ±10V, RL = 50k or 2k 0.03 0.09 0.04 0.12 % TCGE Gain Error Drift G = 100, R L = 50k or 2k 8 18 9 22 ppm/ °C (Note 6) G = 10, R L = 50k or 2k 5 10 6 14 ppm/ °C GNL Gain Nonlinearity G = 100, R L= 50k 8 30 9 40 ppm G = 100, RL= 2k 11 36 12 48 ppm G = 10, RL= 50k or 2k 8 18 8 22 ppm VOS Input Offset Voltage 230 1000 280 1400 μV ΔVOS/ΔT Input Offset Voltage Drift (Note 6) 2 8 3 12 μV/°C IOS Input Offset Current 10 150 15 220 pA ΔIOS/ΔT Input Offset Current Drift (Note 6) 0.5 3 0.5 4 pA/ °C IB Input Bias Current ±40 ±300 ±50 ±400 pA ΔIB/ΔT lnput Bias Current Drift (Note 6) 1 4 1 6 pA/ °C CMRR Common Mode V CM = ±10.3V 83 98 81 97 dB Rejection Ratio PSRR Power Supply V S = ±10V to ±17V 87 101 85 100 dB Rejection Ratio IS Supply Current T A = 70°C 2.8 2.9 mA VO Maximum Output R L = 50k ±12.8 ±13.4 ±12.8 ±13.4 V Voltage Swing R L = 2k ±12.0 ±12.8 ±12.0 ±12.8 V VS = ±15V, VCM = 0V, Gain = 10 or 100, 0°C ≤ TA ≤ 70°C, unless otherwise noted.

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: This parameter is tested on a sample basis only. Note 3: Current noise is calculated from the formula: in = (2qIB)1/2 where q = 1.6 • 10–19 coulomb. The noise of source resistors up to 1GΩ swamps the contribution of current noise. Note 4: This parameter is not tested. It is guaranteed by design and by inference from the slew rate measurement. Note 5: Overdrive recovery is defined as the time delay from the removal of an input overdrive to the output’s return from saturation to linear operation. 50% overdrive equals VIN = ±2V (G = 10) or VIN = ±200mV (G = 100). Note 6: This parameter is not tested. It is guaranteed by design and by inference from other tests. TYPICAL PERFOR A CE CHARACTERISTICS UW Small Signal Response, G = 10 (Input = 50mV Pulse) Small Signal Response, G = 100 (Input = 5mV Pulse) Slew Rate, G = 100 (Input = ±130mV Pulse) Settling Time, G = 10 (Input From –10V to 10V) Settling Time, G = 10 (Input From 10V to –10V) Settling Time, G = 100 (Input From –10V to 10V) 2μS/DIV 100mV/DIV FPOLT1102 • TPC01 2μS/DIV 100mV/DIV FPOLT1102 • TPC02 2μS/DIV 5V/DIV FPOLT1102 • TPC03 2μS/DIV 5mV/DIV AT SUM NODE FPOLT1102 • TPC07 1μS/DIV 5mV/DIV AT SUM NODE FPOLT1102 • TPC04 1μS/DIV 5mV/DIV AT SUM NODE FPOLT1102 • TPC05 2μS/DIV 5mV/DIV AT SUM NODE FPOLT1102 • TPC06 Settling Time, G = 100 (Input From 10V to –10V)

Capacitive Load Handling Output Impedance vs Frequency TYPICAL PERFOR A CE CHARACTERISTICS UW LT1102 • TPC08 CAPACITIVE LOAD (nF) OVERSHOOT (%) 120 100 0.1 10 100 1000 VS = ±15V TA = 25°C G = 100 G = 10 LT1102 • TPC09 FREQUENCY (Hz) 0.1 OUTPUT IMPEDANCE (Ω) 100 10k 100k 1M VS = ±15V TA = 25°C G = 100 G = 10 Gain vs Frequency Voltage Noise vs FrequencyUndistorted Output vs Frequency Input Bias Current Over the Common Mode Range Common Mode Range vs TemperatureWarm-Up Drift LT1102 • TPC10 FREQUENCY (Hz) 10k –1.5GAIN ERROR (%) GAIN (dB) –0.5 0.5 100k 1M 10M –1.0 –1.5 –0.5 –1.0 VS = ±15V TA = 25°CG = 100 G = 10 LT1102 • TPC11 FREQUENCY (Hz) 10k PEAK-TO-PEAK OUTPUT SWING (V) 100k 1M 10M VS = ±15V TA = 25°C G = 10 RL = 2k G = 10 R L = 50k G = 100 R L = 2k OR 50k LT1102 • TPC12 FREQUENCY (Hz) RMS VOLTAGE NOISE DENSITY (nV√Hz) 100 3 10 30 100 300 1k 3k 10k 1/f CORNER = 28Hz VS = ±15V TA = 25°C COMMON MODE VOLTAGE (V) –15 –10 0 0.8 INPUT BIAS CURRENT, TA = 125°C (nA) INPUT BIAS CURRENT, TA = 25°C TO 70°C (pA) 1.0 1.4 1.6 1.8 51 0 2.6 1.2 –5 15 2.2 2.0 2.4 –20 160 120 100 140 LT1102 • TPC13 TA = 25°C TA = 70°C TA = 125°C VS = ±15V TIME AFTER POWER ON (MINUTES) CHANGE IN OFFSET VOLTAGE (μV) 1 2 3 5 LT1102 • TPC14 VS = ±15V TA = 25°C N PACKAGE H AND J PACKAGE TEMPERATURE (°C) –50 –15 COMMON MODE RANGE (V) –14 –12 –11 0 50 –13 100 LT1102 • TPC15 VS = ±15V G = 10 OR 100 G = 100 G = 10 Supply Current vs Temperature TEMPERATURE (˚C) –50 SUPPLY CURRENT (mA) 25 75 –25 0 50 100 125 LT1102 • TPC16 VS = ±15V VS = ±10V

Short-Circuit Current vs Time Distribution of Offset Voltage TYPICAL PERFOR A CE CHARACTERISTICS UW TEMPERATURE (°C) –50 GAIN ERROR (%) 0.04 0.10 0 50 75 0.02 0.08 0.06 –25 25 100 125 LT1102 • TPC19 VS = ±15V RL ≥ 2k G = 100 G = 10 Gain Error vs Temperature Gain Nonlinearity Over Temperature TIME FROM OUTPUT SHORT TO GROUND (MINUTES) –50 SHORT-CIRCUIT CURRENT (mA) –40 –20 –10 1 2 –3 0 LT1102 • TPC17 TA = 25°C TA = 25°C TA = –55 °C TA = –55 °C TA = 125°C TA = 125°C VS = ±15V TEMPERATURE (°C) –50 GAIN NONLINEARITY (ppm) 0 50 75 –25 25 100 125 LT1102 • TPC20 G = 100 RL = 2k G = 100 R L = 50k G = 10 R L = 2k OR 50k INPUT OFFSET VOLTAGE (mV) PERCENT OF UNITS –0.8 0 0.4 0.8–0.4 LT1102 • TPC18 VS = ±15V TA = 25°C

950 UNITS TESTED

In the two op amp instrumentation amplifier configura- tion, the first amplifier is basically in unity gain, and the second amplifier provides all the voltage gain. In the LT1102, the second amplifier is decompensated for gain of 10 stability, therefore high slew rate and bandwidth are achieved. Common mode rejection versus frequency is also optimized in the G = 10 mode, because the bandwidths of the two op amps are similar. When G = 100, this statement is no longer true; however, by connecting an 18pF capacitor between pins 1 and 2, a common mode AC gain is created to cancel the inherent roll-off. From 200Hz to 30kHz, CMRR versus frequency is improved by an order of magnitude. Input Protection Instrumentation amplifiers are often used in harsh environments where overload conditions can occur. The LT1102 employs FET input transistors, consequently the differential input voltage can be ±30V (with ±15V supplies, ±36V with ±18V supplies). Some competitive instrumentation amplifiers have NPN inputs which are protected by back-to-back diodes. When the differential input Voltage exceeds ±13V on these competitive devices, input current increases to milliampere level; more than ±10V differential voltage can cause permanent damage. When the LT1102 inputs are pulled below the negative supply or above the positive supply, the inputs will clamp a diode voltage below or above the supplies. No damage will occur if the input current is limited to 20mA. Common Mode Rejection Ratio vs Frequency Gains Between 10 and 100 Gains between 10 and 100 can be achieved by connecting two equal resistors (= RX) between pins 1 and 2 and pins 7 and 8. The nominal value of R is 1.84kΩ. The usefulness of this method is limited by the fact that R is not controlled to better than ±10% absolute accuracy in production. However, on any specific unit, 90R can be measured between Pins 1 and 2. APPLICATIO S I FOR ATIOWU UU Gain = 10 + RX R + RX/90 FREQUENCY (Hz) COMMON MODE REJECTION RATIO (dB) 120 10 100 1k 10k 100k 1M 100 LT1102 • AI01 VS = ±15V TA = 25°C G = 100 18pF PIN 1 TO PIN 2 G = 10 G = 100

Gain = 20, 110, or 200 Instrumentation Amplifiers Differential Output Multiplexed Input Data Acquisition Single Ended Output Voltage Programmable Current Source is Simple and Precise Dynamic Response of the Current Source APPLICATIO S I FOR ATIOWU UU LT1102 • AI03 OUTPUT AO A1 DECODER EN 509 OR EQUIVALENT S1A

4 CHANNELS

800kHz SIGNALS CAN BE MULTIPLEXED WITH LT1102 IN G = 10 DB HORIZ. = 20μs/DIV A = 5V/DIV FPOLT1102 • AI05 B = 5mA/DIV– LT1102 • AI04 LT1006 LT1102 A = 100 0.05μF 10k LOAD 0 ±10V IK VIN IK = VIN R • 100R 10Ω* LT1102 • AI02 OUT IN GAIN = 200, AS SHOWN GAIN = 20, SHORT PIN 1 TO PIN 2, PIN 7 TO PIN 8 ON BOTH DEVICES GAIN = 110, SHORT PIN 1 TO PIN 2, PIN 7 TO PIN 8 ON ONE DEVICE, NOT ON THE OTHER INPUT REFERRED NOISE IS REDUCED BY √2 (G = 200 OR 20) LT1102 LT1102 3 – LT1102 IN OUT LT1102

Offset NullingSettling Time Test Circuit TYPICAL APPLICATIO SU INPUT NC NC REF OUT GAIN = 100 INPUT REF OUT GAIN = 10 LT1102 • TA03 LT1102 LT1102 15V –15V 5.0k 5.1k FET PROBE HP5082-2810 20VP-P FLAT-TOP INPUT LT1102 • TA04 LT1102 200Ω R1 = 910Ω, G = 10 R1 = 10k, G = 100 100Ω 15V – 15V OUT 10k 1.8k LT1102 • TA05 LT1102 R2 = 3.3Ω, G = 10 R2 = 30Ω, G = 100 NULL RANGE = ±1mV GAIN DEGRADATION ≈ 0.018%

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. UPACKAGE DESCRIPTIO 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) OBSOLETE PACKAGES .050 (1.270) MAX .016 – .021** (0.406 – 0.533) .010 – .045* (0.254 – 1.143) SEATING PLANE .040 (1.016) MAX .165 – .185 (4.191 – 4.699) GAUGE PLANE REFERENCE PLANE .500 – .750 (12.700 – 19.050) .305 – .335 (7.747 – 8.509) .335 – .370 (8.509 – 9.398) DIA .230 (5.842) TYP .027 – .045 (0.686 – 1.143) .028 – .034 (0.711 – 0.864) .110 – .160 (2.794 – 4.064) INSULATING STANDOFF 45°TYP H8 (TO-5) 0.230 PCD 0801 LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS .016 – .024 (0.406 – 0.610) PIN 1 J8 0801 .014 – .026 (0.360 – 0.660) .200 (5.080) MAX .015 – .060 (0.381 – 1.524) .125 3.175 MIN.100 (2.54) BSC .300 BSC (7.62 BSC) .008 – .018 .005 (0.127) MIN .405 (10.287) MAX .220 – .310 (5.588 – 7.874) 12 3 4 87 65 .025 (0.635) RAD TYP .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .023 – .045 (0.584 – 1.143) HALF LEAD OPTION CORNER LEADS OPTION (4 PLCS) .045 – .065 (1.143 – 1.651)NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS H Package 8-Lead TO-5 Metal Can (.230 Inch PCD) (Reference LTC DWG # 05-08-1321)

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LT 0507 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1991 UPACKAGE DESCRIPTIO 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) N8 1002 .065 (1.651) TYP .045 – .065 (1.143 – 1.651) .130 ± .005 (3.302 ± 0.127) .020 (0.508) MIN.018 ± .003 (0.457 ± 0.076) .120 (3.048) MIN 12 3 4 87 6 5 .255 ± .015* (6.477 ± 0.381) .400* (10.160) MAX .008 – .015 (0.203 – 0.381) .300 – .325 (7.620 – 8.255) .325 +.035 –.015 +0.889 –0.3818.255() NOTE: 1. DIMENSIONS ARE INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) .100 (2.54) BSC