Texas Instruments OPA727AIDRBTG4

Overview

OPA727AIDRBTG4 from Texas Instruments is a single-channel, e-trim™ high-precision CMOS operational amplifier in an 8-pin DFN (DRB) package. It delivers 20MHz gain-bandwidth, 30V/µs slew rate, 150µV max input offset voltage, 1.5µV/°C max offset drift, and 6nV/√Hz input voltage noise at 100kHz - enabling high-fidelity signal conditioning in optical transimpedance amplifiers and precision ADC drivers.

For engineers reviewing the OPA727AIDRBTG4 datasheet, OPA727AIDRBTG4 pinout, OPA727AIDRBTG4 application, or OPA727AIDRBTG4 equivalent, key selection considerations include its rail-to-rail output swing (150mV from rails), 4.3mA quiescent current per channel, ±500pA max input bias current, operation from 4V to 12V supplies, and –40°C to +125°C temperature rating - all verified for single-supply photodiode monitoring and 16-bit data acquisition systems.

Technical Context

The OPA727AIDRBTG4 uses Texas Instruments' e-trim™ technology - digital trimming performed post-packaging to eliminate stress-induced parameter shifts - achieving 15µV typical and 150µV maximum offset voltage with 0.3µV/°C typical drift. Its CMOS input stage enables ultra-low input bias current (±500pA max) and high input impedance (10¹¹ Ω || 5pF differential).

This device features a class-AB rail-to-rail output stage capable of driving ≥100kΩ loads to within 150mV of V+ and V– while maintaining >110dB open-loop gain, and supports stable unity-gain operation with capacitive load drive up to 20pF when configured with internal compensation techniques.

Key Specifications

Pinout & Package

OPA727AIDRBTG4 is housed in an 8-pin DFN (DRB) package with exposed thermal die pad on underside, requiring connection to V– for optimal thermal performance and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA727AIDGKR, the OPA727AIDRBTG4 offers tighter offset (150µV vs. 300µV) and superior thermal resistance (46°C/W vs. 150°C/W), making it preferable for production-grade, thermally constrained designs. Against OPA2727AIDRBRG4, it provides dedicated single-channel optimization - avoiding inter-channel crosstalk and simplifying power routing in isolated signal paths.

Availability

OPA727AIDRBTG4 is available at Aetrix Electronics and suitable for optical networking, precision data acquisition, and industrial process control requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for OPA727AIDRBTG4 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 signal chain solutions.

The OPA727 series belongs to TI's e-trim™ precision op amp product line, engineered specifically for applications demanding ultra-low offset, minimal drift, and high-speed AC performance in harsh industrial and optical environments.

FAQ

What is the maximum input offset voltage specification for OPA727AIDRBTG4 over temperature?

The OPA727AIDRBTG4 has a maximum input offset voltage of 150µV across the full operating temperature range of –40°C to +125°C, as guaranteed by Texas Instruments' e-trim™ post-package trimming process. This value is confirmed in the Electrical Characteristics table under "OFFSET VOLTAGE" for OPA727 DFN packages at TA = –40°C to +125°C. The typical value is 15µV at +25°C.

Does OPA727AIDRBTG4 support single-supply operation down to 4V?

Yes, OPA727AIDRBTG4 is fully specified and tested for single-supply operation from 4V to 12V. Its input common-mode range extends to V– (ground), and output swings to within 150mV of both rails under light loads - enabling true single-supply functionality in 5V systems such as portable instrumentation and optical receivers. The datasheet confirms operation at VS = +4V in Absolute Maximum Ratings and Electrical Characteristics sections.

What package type and thermal characteristics does OPA727AIDRBTG4 use?

OPA727AIDRBTG4 is packaged in an 8-pin DFN (DRB) with an exposed thermal die pad on the underside. Its thermal resistance is θJA = 46°C/W, significantly lower than MSOP-8 (150°C/W) or SO-8 (150°C/W) variants. The die pad must be soldered to the V– plane on the PCB to ensure structural integrity, long-term reliability, and effective heat dissipation - as documented in TI's DFN layout guidelines and mechanical drawings.

Can OPA727AIDRBTG4 drive a 20pF capacitive load stably in unity-gain configuration?

Yes, OPA727AIDRBTG4 is internally compensated for stable unity-gain operation with capacitive loads up to 20pF, as stated in the Frequency Response section of the datasheet. Typical characteristics show overshoot remains below 10% at CL = 20pF with G = +1. For heavier loads or improved phase margin, a small series resistor (10Ω–20Ω) inside the feedback loop - as recommended in Figure 30 - further enhances stability without degrading DC accuracy.

Is OPA727AIDRBTG4 pin-compatible with other members of the OPA727/OPA728 family?

No - OPA727AIDRBTG4 (DFN-8) is not pin-compatible with MSOP-8 (e.g., OPA727AIDGKR) or SO-8 (e.g., OPA2727AIDR) variants due to differing pinouts and package footprints. While functional specifications align across the family, mechanical compatibility requires matching package codes: DRB for DFN-8, DGK for MSOP-8, and D for SO-8. Always verify landing pattern and thermal pad connection per package drawing before PCB layout.