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AD620 Datasheet(PDF) 1 Page - Analog Devices |
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AD620 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 28 page  LT6372-1 1 Rev. 0 For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION Precision Instrumentation Amplifier with Level Shift and Output Clamping The LT®6372-1 is a gain programmable, high precision instrumentation amplifier that delivers industry leading DC precision. This high precision enables smaller sig- nals to be sensed and eases calibration requirements, particularly over temperature. The LT6372-1 incorporates features into the LT6370 which further improve accuracy and simplify interfacing to an ADC. The LT6372-1 uses a proprietary high performance bipo- lar process which enables industry leading accuracy cou- pled with exceptional long-term stability. The LT6372-1 is laser trimmed for very low input offset voltage (60µV) and high CMRR (86dB, G = 1). Proprietary on-chip test capability allows the gain drift (35ppm/°C) to be guaran- teed with automated testing. The LT6372-1’s difference amplifier uses a split reference configuration which simplifies level shifting the amplifier’s output to the center of the ADC’s input range. Output clamp pins are also provided to limit the voltage which can be applied to an ADC’s input. EMI filtering is integrated on the LT6372-1’s inputs to maintain accuracy in the pres- ence of harsh RF interference. The LT6372-1 is available in a compact MS16E or a 20-pin 3mm x 4mm QFN. The LT6372-1 is fully specified over the –40°C to 85°C and –40°C to 125°C temperature ranges. n Single Gain Set Resistor: G = 1 to >1000 n Excellent DC Precision n Input Offset Voltage: 60μV Max n Input Offset Voltage Drift: 0.6μV/°C Max n Low Gain Error: 0.01% Max (G = 1) n Low Gain Drift: 35ppm/°C Max (G > 1) n High DC CMRR: 86dB Min (G = 1) n Integrated Output Clamps n Integrated Output Level Shift n Input Bias Current: 800pA Max n 3.1MHz –3dB Bandwidth (G = 1) n Low Noise: n 0.1Hz to 10Hz Noise: 0.2μVP-P n 1kHz Voltage Noise: 7nV/√Hz n Integrated Input RFI Filter n Wide Supply Range 4.75V to 35V n Temperature Ranges: –40°C to 85°C and –40°C to 125°C n MS16E and 20-Lead 3mm × 4mm QFN Packages All registered trademarks and trademarks are the property of their respective owners. 350 350 350 350 10V +15V GAIN OF 100 BRIDGE AMPLIFIER 6372-1 TA01a RG 243 10nF COG REF1 + – LT6372-1 LTC6655-5 LTC2367-16 REF REF2 CLLO CLHI VDD 2.5V 91 GND –15V VIN VIN VOUT VREF LT6372–1 Driving LTC2367–16 with Level Shift and Output Clamping APPLICATIONS n Bridge Amplifier n Data Acquisition n Thermocouple Amplifier n Strain Gauge Amplifier n Medical Instrumentation n Transducer Interfaces n Differential to Single-Ended Conversion Level Shifted to VREF/2 Output Clamped Negative Output Clamped Positive G = 100 VIN (mV) –100 –75 –50 –25 0 25 50 75 100 –1 0 1 2 3 4 5 6 0 13107 26214 39322 52428 65536 with Level–Shift and Output Clamping LT6372–1 Driving LTC2369–18 63721 TA01b |
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