Analog Devices Inc. LT6372IMSE-1#TRPBF

Overview

LT6372IMSE-1#TRPBF from Analog Devices is a precision instrumentation amplifier with integrated output clamping and split-reference level shifting, designed for high-accuracy signal conditioning in bridge, thermocouple, and strain gauge interfaces. It delivers 60µV max input offset voltage, 86dB min DC CMRR at G=1, 3.1MHz –3dB bandwidth (G=1), and operates from ±2.375V to ±17.5V supplies across –40°C to 85°C.

For engineers reviewing the LT6372IMSE-1#TRPBF datasheet, LT6372IMSE-1#TRPBF pinout, LT6372IMSE-1#TRPBF application, or LT6372IMSE-1#TRPBF equivalent, key selection criteria include guaranteed gain drift ≤35ppm/°C (G>1), integrated RFI filtering on inputs, ±0.5V clamp tolerance relative to CLHI/CLLO pins, and MS16E package compatibility with ADC interface circuits requiring rail-to-rail output swing control.

Technical Context

The LT6372IMSE-1#TRPBF implements an enhanced three-op-amp topology with laser-trimmed 12.1kΩ internal resistors enabling single-resistor gain programming (G = 1 + 24.2kΩ/R_G). Its proprietary bipolar process ensures <0.6µV/°C input offset drift and exceptional long-term stability.

It features a split-reference difference amplifier stage that references OUTPUT to the average of REF1 and REF2, enabling direct level shifting to ADC mid-scale without external components. Integrated EMI filters on both inputs maintain accuracy under RF interference, while CLHI/CLLO pins provide programmable output voltage limits with typical ±0.5V clamp offsets.

Key Specifications

Pinout & Package

The LT6372IMSE-1#TRPBF is housed in a 16-lead plastic MSOP (MS16E) package with exposed pad (Pin 17), which must float or connect to V+ per datasheet requirement. Thermal resistance θ_JA = 35°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar instrumentation amplifier applications.

Compared with AD8421ARMZ and INA826AIDGKR, the LT6372IMSE-1#TRPBF uniquely combines laser-trimmed DC precision, integrated output clamping, and split-reference level shifting-enabling direct ADC interface with zero external components for voltage translation and overvoltage protection.

Availability

LT6372IMSE-1#TRPBF is available at Aetrix Electronics and suitable for bridge amplifiers, thermocouple interfaces, and medical instrumentation requiring stable component supply, guaranteed temperature performance (–40°C to 85°C), and long-term calibration stability.

Supply support for LT6372IMSE-1#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LT6372-1 product line was engineered specifically for high-accuracy sensor signal conditioning in data acquisition systems, emphasizing DC precision, integrated ADC interface functions, and robustness in electrically noisy environments.

FAQ

What is the guaranteed input offset voltage specification for LT6372IMSE-1#TRPBF over temperature?

The LT6372IMSE-1#TRPBF guarantees a maximum input offset voltage of ±60µV over the full –40°C to 85°C operating range. This value is laser-trimmed and specified in the Electrical Characteristics table under "VOST, Total Input Referred Offset Voltage" with the "l" symbol denoting temperature-range coverage. The typical distribution shows most units measure within ±20µV at 25°C.

Does LT6372IMSE-1#TRPBF support single-supply operation?

Yes, the LT6372IMSE-1#TRPBF supports true single-supply operation from 4.75V to 35V total supply voltage. When operated from a single 5V or 12V rail, the input common-mode range extends from V– + 1.8V to V+ – 1.4V, and output swing reaches within 1.3V of each rail into 10kΩ. Its split-reference architecture (REF1/REF2) enables level shifting even in single-supply configurations.

How does the LT6372IMSE-1#TRPBF implement output clamping, and what is the voltage tolerance?

The LT6372IMSE-1#TRPBF uses dedicated CLHI and CLLO pins to define programmable output voltage limits. The output clamps to approximately V_CLHI + 0.45V (max) and V_CLLO – 0.57V (min), with typical values of ±0.5V relative to the applied clamp reference voltages. These tolerances are specified over temperature and load, ensuring predictable ADC input protection without external components.

Can LT6372IMSE-1#TRPBF replace older LT6370-based designs without layout changes?

No, the LT6372IMSE-1#TRPBF is not a pin-compatible drop-in replacement for the LT6370. While functionally enhanced, it adds CLHI, CLLO, REF1, and REF2 pins and reassigns several terminals (e.g., NIC placements differ). The MS16E footprint is identical, but PCB routing must accommodate the new pin functions and Kelvin RG connections to preserve accuracy.

What is the maximum achievable gain and corresponding bandwidth for LT6372IMSE-1#TRPBF?

The LT6372IMSE-1#TRPBF supports gains up to >1000 using external resistor RG, with guaranteed specifications up to G=1000. At G=1000, the –3dB bandwidth is 19kHz (typical), and slew rate is 11V/µs. Bandwidth scales inversely with gain but not linearly due to self-adjusting transconductance; the datasheet provides measured curves for G=1, 10, 100, and 1000.