Analog Devices Inc. LTC1992-1IMS8#PBF

Overview

LTC1992-1IMS8#PBF from Analog Devices (formerly Linear Technology) is a fixed-gain, fully differential amplifier with precise on-chip resistors delivering 1× differential gain, ±0.3% max gain error over –40°C to 85°C, rail-to-rail output swing, and adjustable output common-mode voltage via VOCM pin. It operates from single 2.7V to dual ±5V supplies and serves as a precision single-ended-to-differential converter in high-fidelity data acquisition systems.

For engineers reviewing the LTC1992-1IMS8#PBF datasheet, LTC1992-1IMS8#PBF pinout, LTC1992-1IMS8#PBF application, or LTC1992-1IMS8#PBF equivalent, key selection criteria include guaranteed gain accuracy across temperature, C_LOAD-stable operation up to 10,000pF, low 1mA max supply current, and MSOP-8 package compatibility with space-constrained signal chain designs.

Technical Context

The LTC1992-1IMS8#PBF implements a fully differential architecture with independent internal common-mode feedback for phase-balanced outputs and reduced second-order harmonics. Its fixed 1× gain is set by laser-trimmed on-chip resistors, eliminating external gain-setting components while ensuring ±0.3% max gain error and 3.5ppm/°C gain temperature coefficient.

It supports wide input common-mode range (–V_S to +V_S – 1.3V), rail-to-rail output drive (±10mA min), and configurable output common-mode level via VOCM pin-enabling seamless level shifting between single-supply and bipolar-signal domains without external bias networks.

Key Specifications

Pinout & Package

Package: 8-lead plastic MSOP (3mm × 3mm, 0.65mm pitch), exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8138ARMZ and THS4561IRGET, the LTC1992-1IMS8#PBF uniquely balances precision 1× gain, ultra-low quiescent current, and integrated VOCM control-making it optimal for battery-powered, DC-accurate, space-constrained differential signal conditioning where bandwidth beyond 3MHz is unnecessary.

Availability

LTC1992-1IMS8#PBF is available at Aetrix Electronics and suitable for industrial data acquisition, portable medical instrumentation, and test equipment requiring stable component supply, long-term lifecycle support, and guaranteed performance across –40°C to +85°C.

Supply support for LTC1992-1IMS8#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, renowned for high-performance amplifiers, data converters, and power management ICs serving industrial, automotive, and communications markets.

The LTC1992 family was designed specifically for precision differential signal conditioning-emphasizing gain accuracy, output balance, and ease of level shifting in mixed-signal systems interfacing with high-resolution ADCs.

FAQ

What is the maximum capacitive load the LTC1992-1IMS8#PBF can drive while remaining stable?

The LTC1992-1IMS8#PBF is specified stable with capacitive loads up to 10,000pF across its full operating temperature range and supply conditions. This eliminates the need for series isolation resistors when driving high-input-capacitance ADCs or long PCB traces, simplifying layout and preserving signal integrity in precision data acquisition systems using the LTC1992-1IMS8#PBF.

Does the LTC1992-1IMS8#PBF require external gain-setting resistors?

No-the LTC1992-1IMS8#PBF integrates precision laser-trimmed resistors to achieve its fixed 1× differential gain. This eliminates external components, reduces board area, avoids resistor matching errors, and ensures ±0.3% max gain error over –40°C to +85°C-key advantages confirmed in the LTC1992-1IMS8#PBF datasheet specifications.

Can the LTC1992-1IMS8#PBF operate from a single 3.3V supply?

Yes-the LTC1992-1IMS8#PBF supports single-supply operation from 2.7V to 5V. At 3.3V, it delivers rail-to-rail output swing (within 20mV of rails at 10mA), maintains ±0.3% gain accuracy, and draws ≤1mA supply current, making it ideal for low-voltage portable instrumentation and IoT sensor nodes using the LTC1992-1IMS8#PBF.

What is the function of the VMID pin on the LTC1992-1IMS8#PBF?

VMID is an internal mid-supply reference node (typically 2.5V at V_S = 5V) used for internal biasing and common-mode feedback stabilization. It is not intended for external connection-no load or circuitry should be attached to VMID, as doing so may degrade performance or cause instability in the LTC1992-1IMS8#PBF.

How does the VOCM pin affect output common-mode voltage in the LTC1992-1IMS8#PBF?

The VOCM pin directly sets the output common-mode voltage V_OUTCM = (+V_OUT + –V_OUT)/2, independent of input common-mode level. With V_OUTCM adjustable from (–V_S + 0.5V) to (+V_S – 1.3V), the LTC1992-1IMS8#PBF enables seamless interfacing to ADCs with diverse reference voltages-eliminating external level-shifting circuitry in the LTC1992-1IMS8#PBF signal path.