Texas Instruments OPA727AIDRBR

Overview

OPA727AIDRBR from Texas Instruments is a single-channel, e-trim™ high-precision CMOS operational amplifier in an 8-pin DFN (DRB) package. It delivers 150 µV max input offset voltage, 0.3 µV/°C typical drift, 20 MHz gain-bandwidth, 30 V/µs slew rate, and 4.3 mA quiescent current per channel - enabling high-fidelity signal conditioning in optical transimpedance, ADC driver, and active filter circuits.

For engineers reviewing the OPA727AIDRBR datasheet, OPA727AIDRBR pinout, OPA727AIDRBR application, or OPA727AIDRBR equivalent, key selection criteria include its rail-to-rail output swing (150 mV from rails), ultra-low bias current (±500 pA max), low 6 nV/√Hz noise at 100 kHz, and operation across –40°C to +125°C with supply voltages from 4 V to 12 V.

Technical Context

The OPA727AIDRBR uses Texas Instruments' e-trim™ technology - a post-package digital trimming process that corrects offset voltage and temperature drift after molding, avoiding stress-induced parameter shifts. Its CMOS input stage enables sub-picoampere bias current and wide common-mode range (V– to V+ – 2.5 V).

This device features a class-AB rail-to-rail output stage capable of driving ≥100 kΩ loads within 150 mV of supply rails while maintaining >110 dB open-loop gain. It is unity-gain stable and optimized for single-supply operation up to 12 V, with no phase inversion when inputs exceed supply rails (if current-limited to ≤10 mA).

Key Specifications

Pinout & Package

OPA727AIDRBR is housed in an 8-pin DFN (DRB) package with exposed thermal die pad on underside, requiring connection to V– for optimal thermal and electrical performance. Pin 1 is marked by a dot or notch; top-view pin numbering follows standard DFN convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision op amp applications.

Compared with OPA727AIDGKR, OPA727AIDRBR offers 3.3× lower thermal resistance and 30% smaller PCB area; versus OPA2727AIDRBR, it provides half the channel count but identical per-channel performance and cost-per-amplifier in volume production.

Availability

OPA727AIDRBR is available at Aetrix Electronics and suitable for optical networking, high-speed data acquisition, and precision analog front-end applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for OPA727AIDRBR 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 op amps and signal chain solutions.

The OPA727 series belongs to TI's e-trim™ precision op amp family, designed specifically for applications demanding ultra-low offset, minimal drift, and high-speed ac performance in harsh environments - including optical sensing, test instrumentation, and industrial control.

FAQ

What is the maximum operating temperature range for the OPA727AIDRBR?

The OPA727AIDRBR is fully specified from –40°C to +125°C, with absolute maximum junction temperature rated at +150°C. Electrical characteristics including offset voltage, drift, and open-loop gain are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive and factory-floor applications where ambient temperatures exceed 85°C.

Does the OPA727AIDRBR support single-supply operation?

Yes, the OPA727AIDRBR is explicitly optimized for single-supply operation from 4 V to 12 V. Its input common-mode range extends to V– (ground), and its rail-to-rail output swings to within 150 mV of both supply rails - enabling true single-supply functionality in systems like portable instrumentation and optical receivers without level-shifting circuitry.

What is the purpose of the exposed thermal pad on the OPA727AIDRBR DFN package?

The exposed thermal die pad on the bottom of the OPA727AIDRBR's DFN-8 package must be soldered to a PCB copper plane connected to V–. This connection reduces thermal resistance (θJA = 46°C/W), improves long-term reliability under thermal cycling, and enhances electrical stability by lowering ground impedance - TI mandates this for functional and lifetime compliance.

How does e-trim™ technology improve performance over conventional trimming methods in the OPA727AIDRBR?

e-trim™ performs digital offset and drift correction after plastic packaging - eliminating parametric shifts caused by mold stress that degrade pre-trimmed parts. As a result, the OPA727AIDRBR achieves 150 µV max offset and 1.5 µV/°C max drift with tighter statistical distribution, verified across temperature and life testing - unlike laser-trimmed or fuse-based alternatives.

Can the OPA727AIDRBR drive capacitive loads, and what is the recommended compensation strategy?

The OPA727AIDRBR can drive up to 20 pF capacitive loads in unity-gain configuration with minimal overshoot. For heavier loads, TI recommends adding a 10 Ω to 20 Ω series resistor inside the feedback loop (between output and inverting input) - this isolates the op amp from the load capacitance while preserving DC accuracy and avoiding gain peaking.