Analog Devices Inc. LT6370IS8E#TRPBF

Overview

LT6370IS8E#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, and 94dB min DC CMRR at G=1 - enabling accurate bridge and thermocouple signal conditioning in industrial data acquisition systems.

For engineers reviewing the LT6370IS8E#TRPBF datasheet, LT6370IS8E#TRPBF pinout, LT6370IS8E#TRPBF application, or LT6370IS8E#TRPBF equivalent, this page provides verified DC precision specs, S8E package terminal mapping, multiplexed-signal settling performance (5.8µs to 0.0015%), integrated RFI filtering, and real-world transducer interface alternatives.

Technical Context

The LT6370IS8E#TRPBF implements an enhanced three-op-amp topology with laser-trimmed 12.1kΩ internal resistors and proprietary bipolar process transistors (Q1/Q2), ensuring matched gain-setting accuracy (0.08% error at G=100) and ultra-low drift. Its preamp transconductance scales with external RG, enabling self-adjusting bandwidth (3.1MHz at G=1, 19kHz at G=1000).

EMI filtering is integrated on both inputs to maintain DC precision under RF interference. The REF pin supports differential-to-single-ended conversion with ±10V input range and 1V/V gain, while output swing reaches ±14.9V/±14V (VS=±15V, RL=10kΩ) with 8V/µs slew rate and 35mA short-circuit current.

Key Specifications

Pinout & Package

LT6370IS8E#TRPBF uses the industry-standard 8-lead plastic SOIC (S8E) package with exposed pad floating or connected to V+. Thermal resistance is θJA = 33°C/W, θJC = 5°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8421ARZ and INA128UA, LT6370IS8E#TRPBF delivers superior DC precision (25µV vs ≥100µV offset), lower drift (0.3µV/°C vs ≥0.5µV/°C), integrated RFI filtering, and faster settling - making it optimal for high-reliability transducer interfaces where calibration stability and noise immunity are critical.

Availability

LT6370IS8E#TRPBF is available at Aetrix Electronics and suitable for industrial data acquisition, precision bridge sensing, and thermocouple measurement requiring stable component supply and guaranteed long-term availability.

Supply support for LT6370IS8E#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 targets high-accuracy sensor signal conditioning, emphasizing ultra-low drift, integrated EMI resilience, and programmable gain for transducer interfaces in harsh environments.

FAQ

What is the maximum gain achievable with LT6370IS8E#TRPBF?

The LT6370IS8E#TRPBF supports gains from 1 to >1000 using a single external resistor RG, calculated as G = 1 + 24.2kΩ/RG. At G=1000, RG = 24.3Ω; however, PCB trace resistance becomes significant below ~100Ω, so practical high-gain designs use precision metal-film resistors with tight tolerance and low TCR. The LT6370IS8E#TRPBF datasheet confirms 1000× gain with 0.65% max gain error over temperature.

Does LT6370IS8E#TRPBF require external capacitors for stability?

Yes, LT6370IS8E#TRPBF requires 0.1µF ceramic bypass capacitors between V+ and V– pins and ground, placed as close as possible to the device. These capacitors suppress supply noise and prevent oscillation, especially under dynamic load conditions. The LT6370IS8E#TRPBF datasheet specifies this in the Absolute Maximum Ratings and Applications Information sections, noting that inadequate bypassing degrades PSRR and increases output noise.

Can LT6370IS8E#TRPBF operate from a single 5V supply?

Yes, LT6370IS8E#TRPBF operates from a single 4.75V to 35V supply, including 5V. With V+ = 5V and V– = 0V, the input common-mode range is 1.8V to 3.6V, and output swing reaches 0.3V to 4.7V (RL = 10kΩ). For rail-to-rail output, use REF = 2.5V; for single-ended bridge amplification, tie REF to mid-supply. The LT6370IS8E#TRPBF electrical characteristics table validates performance at VS = ±2.375V (i.e., 4.75V total).

How does the integrated RFI filter in LT6370IS8E#TRPBF improve system robustness?

The LT6370IS8E#TRPBF integrates RC filters on both inputs, providing >160dB EMIRR at 100MHz (per Figure 36). This prevents RF rectification that would otherwise corrupt DC precision - critical in factory-floor environments with variable-frequency drives or wireless comms. Unlike external filters, the integrated solution avoids phase mismatch and preserves CMRR above 10kHz. The LT6370IS8E#TRPBF datasheet shows CMRR remains >87dB up to 20kHz even with 1kΩ source imbalance.

What is the thermal performance of LT6370IS8E#TRPBF in the S8E package?

LT6370IS8E#TRPBF in the 8-lead SOIC (S8E) package has θJA = 33°C/W and θJC = 5°C/W. At 2.9mA supply current and ±15V supplies, power dissipation is ~87mW; junction temperature rise is ≤2.9°C above ambient with proper PCB copper pour. The LT6370IS8E#TRPBF is fully specified from –40°C to 85°C, with derating required above 125°C junction temperature. Thermal images in the datasheet confirm uniform die heating under continuous operation.