Analog Devices Inc. LT6372IMSE-0.2#PBF

Overview

LT6372IMSE-0.2#PBF from Analog Devices is a precision funneling instrumentation amplifier with integrated level shift, output clamping, and EMI filtering. It delivers 60µV max input offset voltage, 80dB min DC CMRR at G=0.2, and 4MHz –3dB bandwidth (G=0.2), enabling high-fidelity ±10V bridge sensor signal conditioning into 5V ADC input ranges.

For engineers reviewing the LT6372IMSE-0.2#PBF datasheet, LT6372IMSE-0.2#PBF pinout, LT6372IMSE-0.2#PBF application, or LT6372IMSE-0.2#PBF equivalent, this device is selected for demanding data acquisition systems requiring guaranteed gain drift ≤35ppm/°C, sub-1µV/°C offset drift, and robust RF immunity in industrial and medical transducer interfaces.

Technical Context

The LT6372IMSE-0.2#PBF implements a laser-trimmed, three-op-amp instrumentation topology on a proprietary bipolar process, with matched R1/R2 (12.1kΩ) enabling single-resistor gain programming from 0.2 to >200. Its split-reference difference amplifier stage enables precise output level shifting relative to REF1/REF2.

Integrated CLHI/CLLO clamp terminals allow programmable output voltage limiting (±0.45V typical clamp offset), while on-chip EMI filters on both inputs maintain DC precision under harsh RF interference. Gain drift is guaranteed via high-speed automated testing, not just design simulation.

Key Specifications

Pinout & Package

LT6372IMSE-0.2#PBF is packaged in a 16-lead plastic MSOP (MS16E) with exposed pad (pin 17), rated θ_JA = 35°C/W. Pin 17 must float or connect to V+ (pin 12).

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-0.2#PBF uniquely integrates clamp control, level shift, and EMI filtering in a single package - reducing component count, PCB area, and validation effort for precision ±10V sensor interfaces.

Availability

LT6372IMSE-0.2#PBF is available at Aetrix Electronics and suitable for bridge amplifier designs, industrial data acquisition systems, and medical transducer interfaces requiring stable component supply across extended temperature ranges (–40°C to 85°C).

Supply support for LT6372IMSE-0.2#PBF 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 family is designed specifically for high-accuracy sensor signal conditioning - combining laser-trimmed precision, integrated protection features, and flexible gain architecture to simplify front-end design for data acquisition and instrumentation systems.

FAQ

What is the maximum gain achievable with LT6372IMSE-0.2#PBF?

The LT6372IMSE-0.2#PBF supports gain programming from G = 0.2 up to >200 using a single external resistor RG. Gains higher than 200 are possible but require very low RG values (<100Ω), where PCB and package lead resistance become significant error sources. For production designs, Analog Devices specifies G ≤ 200 to ensure guaranteed 0.15% gain accuracy at G = 100.

How does the LT6372IMSE-0.2#PBF implement output level shifting?

The LT6372IMSE-0.2#PBF uses a split-reference architecture with dedicated REF1 and REF2 pins. When REF1 and REF2 are driven with different voltages (e.g., 0V and 5V), the output is level-shifted to the midpoint (2.5V) plus gain × (V_+IN – V_–IN). This eliminates external op-amps for ADC input centering and maintains 0.5V/V REF gain with ±75ppm error.

Can LT6372IMSE-0.2#PBF operate from a single supply?

Yes, the LT6372IMSE-0.2#PBF supports single-supply operation from 4.75V to 35V total supply voltage. Its input common-mode range extends from V– + 1.8V to V+ – 1.4V, and output swing reaches within 0.5V of each rail (e.g., 0.7V to 1.4V with ±2.375V supplies). For true single-ended use, REF1/REF2 must be biased appropriately to establish the output DC operating point.

What is the purpose of the separate +RG,F/+RG,S and –RG,F/–RG,S pins?

The LT6372IMSE-0.2#PBF provides Kelvin connections for the external gain-setting resistor RG: +RG,F/+RG,S and –RG,F/–RG,S. This four-terminal configuration cancels errors from PCB trace resistance and solder joint variations, enabling <0.012% gain error at G = 0.2. Routing +RG,F and +RG,S on separate traces - and similarly for the negative side - is mandatory to achieve specified accuracy.

Does LT6372IMSE-0.2#PBF include EMI protection, and how is it implemented?

Yes, the LT6372IMSE-0.2#PBF integrates RFI filters on both +IN and –IN inputs. These on-chip filters maintain 80dB CMRR in the presence of harsh RF interference (e.g., from switch-mode power supplies or radio transmitters), eliminating the need for external RC snubber networks. Performance is verified per IEC 61000-4-3 radiated immunity testing.