Analog Devices Inc. LT6370AIS8E#TRPBF

Overview

LT6370AIS8E#TRPBF from Analog Devices is a gain-programmable, high-precision instrumentation amplifier in an 8-lead SOIC (S8E) package, delivering 25µV max input offset voltage, 0.3µV/°C max drift, 94dB min CMRR at G=1, 3.1MHz bandwidth, and integrated RFI filtering-designed for bridge transducer signal conditioning in industrial sensor systems.

For engineers reviewing the LT6370AIS8E#TRPBF datasheet, LT6370AIS8E#TRPBF pinout, LT6370AIS8E#TRPBF application, or LT6370AIS8E#TRPBF equivalent, this page provides verified DC precision specs, thermal stability data, gain-setting resistor guidance, and real-world use cases for strain gauge, thermocouple, and multiplexed DAQ systems.

Technical Context

The LT6370AIS8E#TRPBF implements an enhanced three-op-amp topology with laser-trimmed 12.1kΩ internal resistors and proprietary bipolar process technology to achieve ultra-low drift and long-term stability. Its gain is set by a single external resistor (RG), with G = 1 + 24.2kΩ/RG, supporting ranges from 1 to >1000.

It features on-chip EMI filtering on both inputs, guaranteed input offset drift of ±0.3µV/°C over –40°C to 85°C, and automated test validation of gain drift (30ppm/°C max for G > 1) and nonlinearity (≤50ppm at G = 100). The A-grade S8E variant offers tighter DC specifications than standard LT6370.

Key Specifications

Pinout & Package

LT6370AIS8E#TRPBF uses the industry-standard 8-lead SOIC (S8E) package with exposed pad floating or connected to V+ (per datasheet note). Thermal resistance θ_JA = 33°C/W, θ_JC = 5°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8421ARMZ and INA826AIDR, the LT6370AIS8E#TRPBF uniquely combines guaranteed 0.3µV/°C drift, integrated RFI filtering, and single-resistor programmability across G=1–1000-making it optimal for high-stability, mixed-gain industrial sensor nodes where layout area and EMI robustness are critical.

Availability

LT6370AIS8E#TRPBF is available at Aetrix Electronics and suitable for bridge amplifier, thermocouple measurement, and multiplexed data acquisition systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LT6370AIS8E#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 LT6370 product line was designed specifically for high-precision, low-drift instrumentation applications-including strain gauges, thermocouples, and transducer interfaces-where DC accuracy, thermal stability, and EMI resilience are non-negotiable.

FAQ

What is the maximum guaranteed input offset voltage for LT6370AIS8E#TRPBF over temperature?

The LT6370AIS8E#TRPBF has a maximum input offset voltage of 25µV over the full –40°C to +85°C operating range, as specified in the Electrical Characteristics table for the A-grade S8E package. This value is laser-trimmed and validated during automated production testing, ensuring consistent performance without post-manufacture calibration.

Does LT6370AIS8E#TRPBF require external capacitors on its power supply pins?

Yes, LT6370AIS8E#TRPBF requires ≥1µF ceramic bypass capacitors between V+ and ground, and between V– and ground, as stated in the Pin Functions section. These capacitors stabilize the internal bias circuitry and prevent oscillation, especially under dynamic load conditions or when driving capacitive loads.

Can LT6370AIS8E#TRPBF operate from a single 5V supply?

Yes, LT6370AIS8E#TRPBF supports single-supply operation down to 4.75V total supply (e.g., 0V and +4.75V), with valid input common-mode range from V– + 1.8V to V+ – 1.4V. At 5V, this yields ~1.8V to 3.35V usable input range, and output swing of ~0.5V to 4.2V into 10kΩ, confirmed in the Electrical Characteristics table.

How is gain set on LT6370AIS8E#TRPBF, and what resistor value gives G=100?

Gain on LT6370AIS8E#TRPBF is set by a single external resistor RG connected between +RG (Pin 8) and –RG (Pin 1), using G = 1 + 24.2kΩ/RG. For G=100, RG = 24.2kΩ/99 ≈ 244.4Ω; the datasheet recommends the standard 1% value 243Ω, yielding G=100.6 - verified in Table 1 and used in the Typical Application schematic.

Is the REF pin on LT6370AIS8E#TRPBF internally buffered, and what is its input current?

Yes, the REF pin on LT6370AIS8E#TRPBF is internally buffered with 20kΩ input resistance and specified input current of –40µA to +6µA over temperature, as shown in the Electrical Characteristics table. This allows direct connection to DAC outputs or precision voltage references without loading errors, provided drive capability exceeds ±40µA.