Texas Instruments OPA4992IPWR

Overview

OPA4992IPWR from Texas Instruments is a quad-channel, rail-to-rail input/output precision operational amplifier optimized for high-voltage industrial signal conditioning. It delivers ±210 µV typical offset voltage, 10.6 MHz gain-bandwidth, 32 V/µs slew rate, and operates from 2.7 V to 40 V supply. It is used in high-side/low-side current sensing and ADC driver stages where DC accuracy and AC performance coexist under wide temperature (–40°C to 125°C) and supply ranges.

For engineers reviewing the OPA4992IPWR datasheet, OPA4992IPWR pinout, OPA4992IPWR application, or OPA4992IPWR equivalent, this page provides verified specifications, package-validated pin functions, real-world use cases in multiplexed data acquisition and motor control, and two confirmed alternative op amps with documented functional and application differences.

Technical Context

The OPA4992IPWR integrates four independent amplifiers sharing common V+ and V– rails, each featuring MUX-friendly inputs that tolerate differential voltages up to the supply rails and support open-loop comparator operation. Its PMOS/NMOS input stage enables full rail-to-rail common-mode range and high CMRR (115 dB at 40 V).

Internally compensated for unity-gain stability, it achieves 0.65 µs settling to 0.1% with 10 V step and drives capacitive loads up to 500 pF while maintaining ≥64° phase margin. Robust EMIRR performance and ±65 mA short-circuit output current support harsh industrial environments.

Key Specifications

Pinout & Package

OPA4992IPWR is supplied in a 14-pin TSSOP (PW) package measuring 5 mm × 6.4 mm, with exposed thermal pad connected to V– for enhanced thermal dissipation (R_θJA = 118.8°C/W). Pinout conforms to industry-standard quad op amp layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4992IPWR, OPA4197IPWR offers superior drift performance for high-accuracy DC measurements, while LM324BQPWRQ1 trades precision for automotive compliance-neither is pin-compatible with OPA4992IPWR in shutdown or MUX functionality, making OPA4992IPWR optimal for industrial multiplexed sensing where rail-to-rail input flexibility and speed are critical.

Availability

OPA4992IPWR is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, motor drive control modules, and programmable logic controller analog I/O requiring stable component supply across industrial temperature and voltage ranges.

Supply support for OPA4992IPWR 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

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The OPAx992 product line targets high-voltage precision signal conditioning in industrial automation, power conversion, and test equipment-designed to replace legacy op amps with improved DC accuracy, AC speed, and robustness in noisy, wide-supply environments.

FAQ

What is the maximum supply voltage for OPA4992IPWR?

The absolute maximum supply voltage for OPA4992IPWR is 42 V, but the recommended operating range is 2.7 V to 40 V (single-supply) or ±1.35 V to ±20 V (dual-supply). Operation at 40 V enables direct interfacing with 36 V industrial bus systems while maintaining full rail-to-rail input/output swing and specified performance across –40°C to 125°C.

Does OPA4992IPWR support comparator operation without external components?

Yes, OPA4992IPWR supports open-loop comparator operation due to its MUX-friendly inputs, which tolerate differential voltages up to the supply rails and remain stable without internal phase reversal. The device exhibits no phase reversal (verified in Figure 5-34), enabling direct use as a comparator in threshold-detection circuits-eliminating the need for external clamping or dedicated comparator ICs in space-constrained designs.

What is the thermal resistance of OPA4992IPWR in the TSSOP package?

For OPA4992IPWR in the 14-pin TSSOP (PW) package, the junction-to-ambient thermal resistance (R_θJA) is 118.8°C/W, and junction-to-board (R_θJB) is 61.9°C/W. These values assume standard JEDEC 2-layer board conditions; connecting the exposed thermal pad to V– significantly improves heat dissipation and supports continuous operation at full 2.4 mA per amplifier quiescent current across the full temperature range.

Can OPA4992IPWR drive heavy capacitive loads?

OPA4992IPWR maintains stability with capacitive loads up to 500 pF when configured in unity-gain, as confirmed by ≥64° phase margin (Figure 5-33). For loads >200 pF, adding a small series isolation resistor (e.g., 50 Ω) at the output further suppresses overshoot-enabling reliable driving of ADC input capacitance, long cables, or filtering networks without oscillation or settling degradation.

How does OPA4992IPWR perform in high-common-mode-noise environments?

OPA4992IPWR delivers 115 dB common-mode rejection ratio (CMRR) at 40 V supply, validated from –40°C to 125°C. Its dual-input-stage architecture (PMOS/NMOS) ensures consistent CMRR across the full common-mode range, and robust EMIRR performance mitigates RF interference-making it suitable for motor drive current sensing and industrial fieldbus interfaces where noise immunity is critical to measurement fidelity.