Texas Instruments OPA462IDDA

Overview

OPA462IDDA from Texas Instruments is a high-voltage (±90 V), high-current (±45 mA) operational amplifier optimized for precision output drive in demanding industrial and test equipment. It delivers 6.5 MHz gain-bandwidth, 32 V/µs slew rate, and ±0.2 mV input offset voltage at 25°C - enabling accurate amplification of high-swing signals in semiconductor test fixtures and optical module bias control.

For engineers reviewing the OPA462IDDA datasheet, OPA462IDDA pinout, OPA462IDDA application, or OPA462IDDA equivalent, key selection considerations include its ±6 V to ±90 V supply range, independent output disable with 4 µs disable time, open-drain status flag for overtemperature/overcurrent fault reporting, and HSOIC-8 PowerPAD™ thermal package supporting –40°C to +85°C operation.

Technical Context

The OPA462IDDA employs a fully differential input stage with 10¹³ Ω||6 pF input impedance and 126 dB open-loop gain, ensuring minimal signal loading and high DC accuracy. Its output stage integrates current limiting and thermal shutdown circuitry, with status flag activation at 150°C junction temperature and recovery at 130°C.

It features unity-gain stability across its full ±6 V to ±90 V supply range and supports rail-to-rail output swing within 1.5 V of V+ and 3 V of V– at 10 kΩ load - critical for driving high-voltage piezoelectric actuators and laser diode bias circuits without phase inversion.

Key Specifications

Pinout & Package

OPA462IDDA is housed in an 8-pin HSOIC (SO PowerPAD™) package measuring 4.89 mm × 3.90 mm, featuring an exposed metal thermal pad internally connected to V–. The PowerPAD must be soldered to a PCB copper area tied to V– for effective heat dissipation across the –40°C to +85°C industrial temperature range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA462IDDA, OPA454IPWP offers reduced voltage/current capability and no integrated fault signaling, while LM675T lacks both high-voltage rating and protection features - making OPA462IDDA the sole choice for ±90 V, fault-aware, thermally robust designs.

Availability

OPA462IDDA is available at Aetrix Electronics and suitable for semiconductor test fixtures, optical module bias control, and lab instrumentation requiring stable component supply with guaranteed long-term manufacturability and traceable sourcing.

Supply support for OPA462IDDA 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 precision signal chains.

The OPA462IDDA belongs to TI's high-voltage operational amplifier product line, engineered specifically for industrial test, medical, and optical systems demanding wide supply range, robust protection, and metrology-grade DC accuracy.

FAQ

What is the maximum supply voltage rating for the OPA462IDDA?

The OPA462IDDA supports a maximum supply voltage of ±90 V (180 V total), with absolute maximum ratings up to 190 V. Operation at ±90 V is fully specified across the –40°C to +85°C temperature range, and the device maintains 6.5 MHz gain-bandwidth and 32 V/µs slew rate under these conditions. Exceeding ±90 V voids guaranteed performance but remains within absolute maximum limits per the datasheet.

Does the OPA462IDDA require external current limiting or thermal protection circuitry?

No - the OPA462IDDA integrates both current limiting (±45 mA continuous) and thermal shutdown (triggered at 150°C junction temperature) with automatic recovery at 130°C. Its status flag pin reports faults directly, eliminating the need for external sense resistors, comparators, or thermal sensors. This built-in protection is validated across all operating conditions in the OPA462IDDA datasheet.

Can the OPA462IDDA be used in single-supply configurations?

Yes - the OPA462IDDA operates from a single supply ranging from 12 V to 180 V, with V– referenced to system ground or a negative rail. Its input common-mode range extends from (V–) + 1 V to (V+) – 3 V, and output swings to within 1.5 V of V+ and 3 V of V–, enabling true single-supply operation in high-voltage applications like display panel power supplies and piezo driver circuits.

What is the purpose of the E/D Com pin on the OPA462IDDA?

The E/D Com pin serves as the reference node for both the Enable/Disable (E/D) control input and the open-drain Status Flag output. It defines the logic threshold for E/D (e.g., E/D high = E/D Com + 0.8 V) and the sink reference for the flag. Its voltage range varies with supply (e.g., (V–) to (V+) – 6 V for VS < 106 V), allowing interoperability with standard 3.3 V or 5 V logic while maintaining high-voltage integrity in the OPA462IDDA.

How does the OPA462IDDA prevent phase inversion during overvoltage conditions?

The OPA462IDDA uses a proprietary input stage architecture that eliminates phase inversion - a failure mode where output polarity reverses under common-mode overvoltage. Unlike conventional high-voltage op-amps, it maintains correct polarity and stable closed-loop behavior even when input voltages exceed (V–) + 1 V or (V+) – 3 V, as verified in Figure 18 ("No Phase Reversal") of the OPA462IDDA datasheet.