Analog Devices Inc. LTC1992-1HMS8#TRPBF

Overview

LTC1992-1HMS8#TRPBF from Analog Devices (formerly Linear Technology) is a fixed-gain, fully differential amplifier with precise on-chip resistors delivering ±0.3% max gain error over –40°C to 125°C, rail-to-rail output swing, and adjustable output common-mode voltage via VOCM pin. It operates from single 2.7V or dual ±5V supplies and drives capacitive loads up to 10,000pF - ideal for precision single-ended-to-differential conversion in high-reliability industrial data acquisition systems.

For engineers reviewing the LTC1992-1HMS8#TRPBF datasheet, LTC1992-1HMS8#TRPBF pinout, LTC1992-1HMS8#TRPBF application, or LTC1992-1HMS8#TRPBF equivalent, key selection criteria include guaranteed H-grade temperature operation (–40°C to 125°C), fixed gain of 1 V/V, ultrastable 3.5ppm/°C gain TC, low 1mA max supply current, and MSOP-8 package compatibility with space-constrained signal conditioning layouts.

Technical Context

The LTC1992-1HMS8#TRPBF implements a fully differential architecture with separate internal common-mode feedback path to minimize second-order harmonics and ensure exceptional output phase balance. Its VOCM pin sets output common-mode level independently of input common-mode range, enabling seamless level shifting between mixed-supply domains.

It features precision trimmed on-chip resistor network for fixed gain = 1, achieving ±0.1% typical differential gain error and 50ppm max nonlinearity. Input common-mode range extends from (–VS – 0.1V) to (+VS – 1.3V), supporting rail-to-rail input signals across its full supply range.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP (3mm × 3mm, 0.65mm pitch), thermally enhanced for high-reliability operation up to 125°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8138ARMZ and LTC6409IUD#PBF, the LTC1992-1HMS8#TRPBF delivers uniquely optimized trade-offs for precision DC signal paths: guaranteed ±0.3% gain error over –40°C to 125°C, integrated VOCM control for level shifting, and 1mA max quiescent current - making it irreplaceable in high-accuracy, thermally demanding, low-power industrial and automotive measurement systems.

Availability

LTC1992-1HMS8#TRPBF is available at Aetrix Electronics and suitable for industrial sensor conditioning, high-resolution data acquisition front-ends, and automotive battery monitoring units requiring stable component supply across extended temperature ranges.

Supply support for LTC1992-1HMS8#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC1992 family was designed specifically for precision differential signal conditioning in harsh environments - emphasizing ultrastable gain, wide common-mode flexibility, and extended temperature reliability for mission-critical measurement systems.

FAQ

What is the guaranteed gain accuracy of the LTC1992-1HMS8#TRPBF over temperature?

The LTC1992-1HMS8#TRPBF guarantees ±0.3% maximum differential gain error across its full operating temperature range of –40°C to 125°C. This specification is achieved through laser-trimmed on-chip resistors and is explicitly validated for the H-grade variant, ensuring consistent performance in automotive under-hood and industrial control cabinet applications without recalibration.

Does the LTC1992-1HMS8#TRPBF support single-supply operation?

Yes, the LTC1992-1HMS8#TRPBF supports true single-supply operation from 2.7V to 11V. With its rail-to-rail inputs (common-mode range from –VS – 0.1V to +VS – 1.3V) and rail-to-rail outputs, it functions reliably with ground as –VS and a positive rail as +VS - commonly used in 3.3V or 5V data acquisition systems where negative supplies are unavailable.

How does the VOCM pin function in the LTC1992-1HMS8#TRPBF?

The VOCM pin on the LTC1992-1HMS8#TRPBF sets the output common-mode voltage (+OUT + –OUT)/2 independently of the input common-mode level. Applying a voltage (e.g., 2.5V) to VOCM forces the differential outputs to center around that value - enabling direct interfacing to ADCs with fixed reference-based input ranges, such as those requiring 0.5V to 4.5V differential swing, regardless of sensor output common mode.

What is the maximum capacitive load the LTC1992-1HMS8#TRPBF can drive stably?

The LTC1992-1HMS8#TRPBF is specified to remain stable with capacitive loads up to 10,000pF. This eliminates the need for external series isolation resistors when driving high-input-capacitance ADCs (e.g., SAR or sigma-delta types) or long PCB traces, preserving signal fidelity and simplifying layout - a key advantage over many general-purpose op-amps requiring compensation networks.

Is the LTC1992-1HMS8#TRPBF pin-compatible with other members of the LTC1992 family?

Yes, all LTC1992 variants - including LTC1992-1HMS8#TRPBF, LTC1992-2HMS8#TRPBF, and LTC1992-5HMS8#TRPBF - share identical MSOP-8 pinouts and footprints. This allows design reuse and gain-scaling flexibility within the same PCB layout, provided the application's bandwidth and slew rate requirements are met for the selected gain version.