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Overview

Features and Benefits

  • Single Gain Set Resistor: G = 0.2 to >200
  • Excellent DC Precision
    • Input Offset Voltage: 60μV Max
    • Input Offset Voltage Drift: 0.6μV/°C Max
    • Low Gain Error: 0.012% Max (G = 0.2)
    • Low Gain Drift: 35ppm/°C Max (G > 0.2)
    • High DC CMRR: 80dB Min (G = 0.2)
  • Integrated Output Clamps
  • Integrated Output Level Shift
  • Input Bias Current: 800pA Max
  • 4MHz –3dB Bandwidth (G = 0.2)
  • Low Noise:
    • 0.1Hz to 10Hz Noise: 0.2μVP-P
    • 1kHz Voltage Noise: 7nV/√Hz
  • Integrated Input RFI Filter
  • Wide Supply Range 4.75V to 35V
  • Temperature Ranges: –40°C to 85°C and –40°C to 125°C
  • MS16E and 20-Lead 3mm × 4mm QFN Packages

Product Details

The LT6372-0.2 is a gain programmable, high precision funneling instrumentation amplifier that delivers industry leading DC precision. This high precision enables smaller signals to be sensed and eases calibration requirements, particularly over temperature. The LT6372-0.2 incorporates features into the LT6370 which further improve accuracy and simplify interfacing to an ADC.

The LT6372-0.2 uses a proprietary high performance bipolar process which enables industry leading accuracy coupled with exceptional long-term stability. The LT6372-0.2 is laser trimmed for very low input offset voltage (60μV) and high CMRR (80dB, G = 0.2). Proprietary on-chip test capability allows the gain drift (35ppm/°C) to be guaranteed with automated testing.

The LT6372-0.2’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 LT6372-0.2’s inputs to maintain accuracy in the presence of harsh RF interference.

The LT6372-0.2 is available in a compact MS16E or a 20-pin 3mm × 4mm QFN. The LT6372-0.2 is fully specified over the –40°C to 85°C and –40°C to 125°C temperature ranges.

APPLICATIONS

  • Bridge Amplifier
  • Data Acquisition
  • Thermocouple Amplifier
  • Strain Gauge Amplifier
  • Medical Instrumentation
  • Transducer Interfaces
  • Differential to Single-Ended Conversion

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LT6372-0.2
LT6372-1

Product Recommendations

LT6372-0.2 Companion Parts

Recommended ADC Drivers

  • High Speed, Low Drift ADC Driver: ADA4945-1.
  • Precision, Low Power ADC Driver Family: LTC6363.

Recommended Analog to Digital Converters

Recommended Resistor Products

  • Matched Resistor Network for Precision Amplifiers: LT5401.
  • Precision Quad Resistor Network: LT5400.

Recommended References

  • 0.25ppm Noise, Low Drift Precision Reference: LTC6655.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Support & Discussions

LT6372-0.2 Discussions

LTSpice converter model problem
5 week(s) ago in Design Tools and Calculators
ADL5519 differential output question (OUTP & OUTN)
7 week(s) ago in RF and Microwave
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8 week(s) ago in Energy Monitoring and Metering

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.