Analog Devices Inc. LTC1992-5HMS8#PBF

Overview

LTC1992-5HMS8#PBF from Analog Devices (formerly Linear Technology) is a fixed-gain, fully differential amplifier with precise 5× differential gain, rail-to-rail input/output operation, and independent VOCM-controlled output common-mode voltage. It operates from 2.7V single supply to ±5V dual supply, delivers ±10mA output current, and maintains ±0.3% max gain error over –40°C to 125°C - enabling high-fidelity signal conditioning in precision data acquisition and isolated ADC driver applications.

For engineers reviewing the LTC1992-5HMS8#PBF datasheet, LTC1992-5HMS8#PBF pinout, LTC1992-5HMS8#PBF application, or LTC1992-5HMS8#PBF equivalent, this device is selected for its guaranteed gain accuracy, C_LOAD-stable operation up to 10,000pF, low 1mA max supply current, and extended temperature grade suitable for automotive sensor interfaces and industrial control signal chains.

Technical Context

The LTC1992-5HMS8#PBF implements a fully differential architecture with separate internal common-mode feedback to minimize second-order harmonics and ensure balanced +OUT/–OUT phase response. Its fixed 5× gain is set by laser-trimmed on-chip resistors, eliminating external gain-setting components and ensuring ±0.3% max gain error across –40°C to 125°C.

It features an independent VOCM pin that sets output common-mode voltage without affecting input common-mode range, supporting level-shifting between single-ended and differential domains. Input common-mode range extends from (–V_S – 0.1V) to (+V_S – 1.3V), while rail-to-rail outputs drive ±10mA into capacitive loads up to 10,000pF without stability degradation.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP (3mm × 3mm, 0.65mm pitch), thermally enhanced for high-reliability operation at junction temperatures up to 150°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8138ARZ and LTC6409CUD#PBF, the LTC1992-5HMS8#PBF uniquely combines fixed-precision gain, ultra-low power, VOCM flexibility, and extended temperature operation - making it optimal for cost-sensitive, DC-accurate, thermally demanding industrial and automotive signal chains.

Availability

LTC1992-5HMS8#PBF is available at Aetrix Electronics and suitable for high-reliability automotive battery monitoring, industrial sensor signal conditioning, and medical instrumentation front-ends requiring stable component supply across extended temperature ranges.

Supply support for LTC1992-5HMS8#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, 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 by Linear Technology (acquired by ADI in 2017) specifically for precision, low-power, fully differential signal conditioning - targeting applications demanding accurate gain, robust C_LOAD stability, and flexible common-mode control in space- and power-constrained systems.

FAQ

What is the guaranteed gain accuracy of the LTC1992-5HMS8#PBF over temperature?

The LTC1992-5HMS8#PBF guarantees ±0.3% maximum gain error across the full operating temperature range of –40°C to 125°C. This specification is achieved using laser-trimmed on-chip resistors and applies to all H-grade variants including LTC1992-5HMS8#PBF. The gain temperature coefficient is 3.5ppm/°C, contributing to exceptional long-term stability.

Can the LTC1992-5HMS8#PBF operate from a single 3.3V supply?

Yes, the LTC1992-5HMS8#PBF is fully specified for single-supply operation down to 2.7V. At 3.3V, it maintains rail-to-rail input common-mode range (–0.1V to 2.0V), ±10mA output drive, and ±0.3% gain accuracy across –40°C to 125°C. The VMID pin provides a stable ~2.5V reference useful for biasing in 3.3V systems.

Does the LTC1992-5HMS8#PBF require external compensation for stability?

No, the LTC1992-5HMS8#PBF is internally compensated and remains stable with capacitive loads up to 10,000pF without external components. This eliminates the need for series isolation resistors or compensation networks - simplifying layout and improving reliability in noisy or high-capacitance environments such as ADC interface or long-trace routing.

What is the function of the VMID pin on the LTC1992-5HMS8#PBF?

VMID is an internal buffered mid-supply reference output, typically 2.43V–2.57V at 25°C depending on supply voltage. It is not an input and should not be driven externally. In the LTC1992-5HMS8#PBF, VMID can serve as a stable bias point for sensor excitation, reference divider networks, or local analog circuitry - reducing need for external voltage references in compact designs.

How does the VOCM pin affect output common-mode voltage in the LTC1992-5HMS8#PBF?

The VOCM pin directly sets the output common-mode voltage (V_OUTCM = (+V_OUT + –V_OUT)/2) independently of the input common-mode level. For example, with VOCM = 1.5V, the outputs center at 1.5V regardless of whether inputs are referenced to 0V or 2.5V - enabling seamless level shifting between single-ended microcontroller domains and differential ADC inputs in the LTC1992-5HMS8#PBF.