Texas Instruments OPA2673IRGVR

Overview

OPA2673IRGVR from Texas Instruments is a dual, high-output-current operational amplifier with active offline control, designed for broadband line driving in power-line communication (PLC) systems. It delivers 700 mA output current per channel, supports ±3.5 V to ±6.5 V bipolar or 5.75 V to 13 V single supply, and achieves 340 MHz small-signal bandwidth at G = 4 V/V with 3500 V/µs slew rate.

For engineers reviewing the OPA2673IRGVR datasheet, OPA2673IRGVR pinout, OPA2673IRGVR application, or OPA2673IRGVR equivalent, this device is selected for high-current, low-distortion signal amplification in TDMA-based PLC modems, matched I/Q channel drivers, ultrasonic piezo excitation, and broadband video line driving where dynamic power scaling and thermal robustness are critical.

Technical Context

The OPA2673IRGVR integrates two independent high-speed op-amps in a single VQFN-16 package, each configurable for full-bias (16.5 mA/channel), 75% bias (12.5 mA), 50% bias (8.5 mA), or active offline mode (2.4 mA). Its architecture supports both single-ended and differential-input-to-differential-output configurations with adjustable gain and output impedance control.

It features bipolar input stages enabling wide common-mode input range (±3.5 V), on-chip overtemperature shutdown (~180°C), ±1 A short-circuit current limiting, and 85 dB input-to-output isolation in offline mode - all optimized for driving reactive and capacitive loads up to 1 nF without instability.

Key Specifications

Pinout & Package

VQFN-16 (RGV) package, 4.00 mm × 4.00 mm, thermally enhanced with exposed thermal pad electrically tied to –VS - requires PCB connection to negative supply plane for optimal thermal performance and noise immunity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-output-current operational amplifier applications.

Compared with THS3202DGN and OPA2677IRGVT, the OPA2673IRGVR uniquely combines dual-channel integration, 700 mA output, four-step power scaling, and active offline control - making it the only solution that satisfies simultaneous requirements for PLC line driving, I/Q matching, and burst-mode efficiency.

Availability

OPA2673IRGVR is available at Aetrix Electronics and suitable for power-line modems, broadband video infrastructure, ultrasonic NDT systems, and matched I/Q transceiver designs requiring stable component supply across extended product lifecycles.

Supply support for OPA2673IRGVR 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 specializing in analog and embedded processing technologies, with decades of expertise in high-performance op-amps and signal chain solutions.

The OPA2673IRGVR belongs to TI's OPA high-output-current op-amp family, engineered specifically for demanding line-driving applications in communications infrastructure, test equipment, and industrial sensing where power efficiency, thermal resilience, and signal fidelity are co-constrained.

FAQ

What supply voltage ranges does the OPA2673IRGVR support?

The OPA2673IRGVR operates from ±3.5 V to ±6.5 V in dual-supply mode or 5.75 V to 13 V in single-supply configuration. This flexibility allows direct integration into legacy ±5 V PLC systems and modern 12 V industrial platforms. The device maintains specified performance across the full range, including 700 mA output current and 340 MHz bandwidth at ±6 V.

How does the active offline mode function in the OPA2673IRGVR?

The OPA2673IRGVR enters active offline mode when both A0 and A1 control pins are driven high (≥2 V), reducing total quiescent current to 7.2 mA while presenting >85 dB input-to-output isolation at 1 MHz. This high-impedance state prevents signal coupling during TDMA receive intervals - a key enabler for full-duplex PLC modems without external analog switches.

Can the OPA2673IRGVR drive 50 Ω transmission lines directly?

Yes - the OPA2673IRGVR delivers ±4.75 V swing into 100 Ω and ±4.5 V into 25 Ω at ±6 V supply, enabling direct 50 Ω line driving with minimal external components. Its 0.4 mΩ closed-loop output impedance and ±700 mA current capability ensure stable operation into reactive PLC loads, eliminating the need for discrete output transistors or transformers in most implementations.

What thermal management is required for the OPA2673IRGVR in continuous operation?

The OPA2673IRGVR uses a thermally enhanced VQFN-16 (RGV) package with an exposed thermal pad tied to –VS. For continuous full-bias operation at ambient temperatures up to 85°C, a minimum 200 mm² copper pour connected to –VS is required to maintain junction temperature below 139°C. Thermal resistance is 43°C/W junction-to-ambient (RθJA), dropping to 2.5°C/W junction-to-case (bottom) when properly mounted.

Does the OPA2673IRGVR support differential-input to differential-output configuration?

Yes - the OPA2673IRGVR's dual amplifiers can be configured as a differential-input to differential-output line driver using standard feedback networks. TI's datasheet provides verified schematics achieving 4 V/V differential gain with <0.1 dB gain flatness to 100 MHz and –70 dBc harmonic distortion at 20 MHz, making it ideal for balanced I/Q signal paths in PLC and SDR systems.