Texas Instruments OPA727AIDGKR

Overview

OPA727AIDGKR from Texas Instruments is a single, high-precision e-trim™ CMOS operational amplifier in an 8-pin VSSOP package. It delivers 20MHz gain-bandwidth, 30V/µs slew rate, 150µV max input offset voltage, and 4.3mA quiescent current per channel. It operates from 4V to 12V supplies and is used in transimpedance amplifiers for optical networking and precision A/D converter drivers.

For engineers reviewing the OPA727AIDGKR datasheet, OPA727AIDGKR pinout, OPA727AIDGKR application, or OPA727AIDGKR equivalent, key selection criteria include its rail-to-rail output swing (150mV from rails), ultra-low bias current (500pA max), low noise (6nV/√Hz at 100kHz), and guaranteed performance over –40°C to +85°C.

Technical Context

The OPA727AIDGKR uses e-trim™ technology - digital trimming performed post-packaging - to achieve stable 150µV max offset and 1.5µV/°C max drift, avoiding stress-induced parameter shifts. Its CMOS input stage enables 500pA max input bias current and 10¹¹Ω||5pF input impedance.

It features a Class AB rail-to-rail output stage capable of driving 100kΩ loads to within 150mV of supply rails while maintaining >110dB open-loop gain. The device is unity-gain stable and specified across 4V–12V single-supply or ±2V–±6V dual-supply operation.

Key Specifications

Pinout & Package

The OPA727AIDGKR is housed in an 8-pin VSSOP (DGK) package with exposed thermal pad connected to V–. Pin 1 is NC (no internal connection); pins 2–5 and 7–8 are functional; pin 6 is V–.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA727AIDRBR and OPA2727AIDR, the OPA727AIDGKR offers optimal trade-off between compact VSSOP footprint, proven manufacturability in automated assembly, and thermal performance suitable for most industrial and test equipment designs.

Availability

OPA727AIDGKR is available at Aetrix Electronics and suitable for optical transimpedance amplifiers, high-resolution A/D converter drivers, and precision active filters requiring stable component supply across extended temperature ranges.

Supply support for OPA727AIDGKR 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 company headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and communications markets.

The OPA727 series belongs to TI's precision op amp product line, engineered specifically for applications demanding low offset, low drift, and high-speed ac performance in space-constrained, thermally demanding environments.

FAQ

What is the maximum operating temperature range for the OPA727AIDGKR?

The OPA727AIDGKR is specified for operation from –40°C to +85°C, with absolute maximum junction temperature rated at +150°C. Electrical characteristics including offset voltage, CMRR, and open-loop gain are guaranteed across this full industrial temperature range per the SBOS314H datasheet.

Does the OPA727AIDGKR support single-supply operation?

Yes, the OPA727AIDGKR supports true single-supply operation from 4V to 12V. Its input common-mode range extends to V– (ground), and its output swings to within 150mV of both rails - enabling full-scale signal handling in +5V or +12V systems without level-shifting circuitry.

Is the exposed thermal pad on the OPA727AIDGKR package required to be connected?

Yes, the exposed thermal pad on the bottom of the OPA727AIDGKR VSSOP package must be soldered to a PCB ground plane connected to V–. This connection is mandatory for structural integrity, thermal dissipation (reducing θJA from 150°C/W to ~70°C/W in typical layouts), and long-term reliability during thermal cycling.

What is the purpose of the NC pins on the OPA727AIDGKR?

Pins 1 and 8 of the OPA727AIDGKR are designated NC (no internal connection). They serve no electrical function and must remain unconnected - neither tied to ground nor used for thermal relief. Their presence maintains pinout compatibility with industry-standard SO-8 and MSOP-8 footprints.

How does e-trim™ technology improve the OPA727AIDGKR's long-term stability?

e-trim™ performs digital offset and drift calibration after plastic packaging, eliminating parametric shifts caused by molding stress. As a result, the OPA727AIDGKR achieves 150µV max offset and 1.5µV/°C max drift with minimal aging - outperforming traditional laser-trimmed op amps in high-reliability, long-lifecycle applications.