Texas Instruments OPA564AIDWD

Overview

OPA564AIDWD from Texas Instruments is a high-current, wide-bandwidth power operational amplifier designed for reactive load driving in industrial and embedded systems. It delivers 1.5A continuous output current, supports ±3.5V to ±12V dual or +7V to +24V single supply, achieves 17MHz gain-bandwidth product, provides 20VPP output swing at full load, and integrates adjustable current limiting and thermal shutdown - enabling robust valve actuator and VCOM driver implementations.

For engineers reviewing the OPA564AIDWD datasheet, OPA564AIDWD pinout, OPA564AIDWD application, or OPA564AIDWD equivalent, key selection considerations include its HSOP-20 PowerPAD™ (top-side thermal pad) package, user-configurable current limit via ISET resistor, diagnostic flag outputs (IFLAG/TFLAG), Enable/Shutdown control with 3ms enable time, and operation across –40°C to +85°C industrial temperature range.

Technical Context

The OPA564AIDWD implements a monolithic bipolar output stage with integrated current mirror-based adjustable current limiting, where ISET pin current sets ILIM from 0.4A to 1.5A using RSET = (24kΩ/ILIM) – 5kΩ. Its high slew rate (40V/µs) enables 1.3MHz full-power bandwidth at 10VPP, supporting linear amplification of fast transient signals into low-impedance loads.

Thermal protection uses a diode-based junction temperature sensor (TSENSE) with hysteresis of 15–19°C and shutdown activation at +140°C to +157°C. The E/S pin controls output stage enable/disable with internal 100kΩ pull-up, sinking 10mA when high and sourcing 1mA when low, while maintaining 6GΩ||120pF high-impedance shutdown state.

Key Specifications

Pinout & Package

OPA564AIDWD uses the HSOP-20 PowerPAD™ package with thermal pad on the top side (DWD marking), requiring soldering of the pad to PCB copper for thermal management. Thermal resistance is qJC = 6.3°C/W and qJA = 45.5°C/W on high-K board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA564AIDWD, the OPA564AIDWP offers superior thermal dissipation in standard PCB assemblies, while the OPA561IDWP trades diagnostic features and current adjustability for lower cost and higher slew rate - making OPA564AIDWD optimal for applications demanding configurable protection and top-side thermal management.

Availability

OPA564AIDWD is available at Aetrix Electronics and suitable for valve actuation, VCOM driving, and motor control applications requiring stable component supply, long-term industrial temperature support (–40°C to +85°C), and reliable high-current analog output capability.

Supply support for OPA564AIDWD 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 precision amplifiers and power management ICs.

The OPA564AIDWD belongs to TI's Power Operational Amplifier product line, engineered specifically for high-current, high-fidelity analog output stages in industrial automation, test equipment, and display electronics where reliability under reactive loads is critical.

FAQ

What is the correct power-supply sequencing for OPA564AIDWD?

The OPA564AIDWD requires VDIG (digital supply) to be applied before analog supplies (V+ and V–) to prevent latch-up or damage. Per TI SBOS372E, unacceptable sequencing applies analog rails first; acceptable sequences apply VDIG ≥3.0V before enabling V+/V–. This protects internal digital logic and flag circuitry. Always verify sequence compliance in your power tree design for OPA564AIDWD.

How do I configure the current limit on OPA564AIDWD?

Set the OPA564AIDWD current limit using an external resistor (RSET) between ISET (Pin 12) and V–. Use RSET ≅ (24kΩ/ILIM) – 5kΩ to achieve 0.4A–1.5A. For example, 7.5kΩ yields ~1.5A. Do not leave ISET floating or tie directly to V– - both cause damage. Confirm RSET tolerance ≤1% for <10% ILIM error, as specified in the OPA564AIDWD datasheet.

Does OPA564AIDWD support single-supply operation?

Yes, OPA564AIDWD supports single-supply operation from +7V to +24V. Its input common-mode range extends to the negative rail (V–), enabling ground-referenced inputs. Output swing reaches within 1.5V of each rail at 1.5A load. For optimal performance, bypass supplies with ceramic + tantalum capacitors and maintain low-impedance paths - critical for stable operation of OPA564AIDWD in single-supply configurations.

What is the purpose of the TSENSE pin on OPA564AIDWD?

The TSENSE pin (Pin 9) on OPA564AIDWD provides access to an internal diode for accurate junction temperature measurement. With ideality factor h = 1.033, it interfaces directly with TI's TMP411 or equivalent remote temperature sensors. This enables real-time die temperature monitoring beyond the built-in thermal shutdown flag (TFLAG), supporting predictive thermal management and derating strategies in mission-critical OPA564AIDWD deployments.

Can OPA564AIDWD drive capacitive loads?

Yes, OPA564AIDWD can drive capacitive loads, but stability depends on load value and configuration. Figure 6 in the datasheet shows overshoot vs capacitance: <5% overshoot up to 100pF in unity-gain; >20% above 1nF. For larger loads, add series resistance (e.g., 10Ω) at the output or use isolation resistor + capacitor compensation. Always verify phase margin with network analyzer when using OPA564AIDWD with >100pF capacitive loads.