Texas Instruments OPA2726AIDGSRG4

Overview

OPA2726AIDGSRG4 from Texas Instruments is a dual, rail-to-rail output, high-speed precision operational amplifier with shutdown capability, designed for driving 16-bit ADCs and transimpedance applications. It delivers 20MHz gain-bandwidth, 30V/µs slew rate, 6nV/√Hz input voltage noise at 100kHz, 0.0003% THD+N at 1kHz, and operates from ±2V to ±6V or +4V to +12V supplies.

For engineers reviewing the OPA2726AIDGSRG4 datasheet, OPA2726AIDGSRG4 pinout, OPA2726AIDGSRG4 application, or OPA2726AIDGSRG4 equivalent, key selection considerations include fast 16-bit settling time (450ns @ 0.01%), low quiescent current in shutdown mode (6µA/ch), CMRR ≥84dB over temperature, rail-to-rail output swing within 175mV of rails (RL = 100kΩ), and MSOP-10 package compatibility with space-constrained signal-chain designs.

Technical Context

The OPA2726AIDGSRG4 employs a proprietary 12V analog CMOS process with a patented output stage enabling 20MHz GBW and 30V/µs slew rate while maintaining low bias current (<200pA) and excellent ac linearity. Its dual-channel architecture supports independent enable control via DGND-referenced shutdown pins, allowing per-amplifier power gating without affecting channel separation (≥120dB at DC).

Input common-mode range extends from V− to (V+) − 2V, with CMRR maintained ≥94dB up to (V+) − 3V; rail-to-rail output uses a class AB common-source stage delivering 175mV rail margin at 100kΩ load while preserving AOL > 110dB. The device is unity-gain stable and features ESD-protected inputs with ±10mA current limiting.

Key Specifications

Pinout & Package

OPA2726AIDGSRG4 is packaged in a 10-pin MSOP (DGS) with exposed thermal pad, optimized for thermal performance (θ_JA = 150°C/W) and PCB area efficiency in compact signal chains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2726AIDGSRG4, OPA2725AIDGSR lacks integrated shutdown-requiring external FET control for power gating-while OPA2837IRUGR trades lower noise and precision for raw speed, making it less suitable for 16-bit ADC buffering where THD+N and dc accuracy are critical.

Availability

OPA2726AIDGSRG4 is available at Aetrix Electronics and suitable for optical networking transceivers, high-resolution data acquisition systems, industrial process controllers, and portable test equipment requiring stable component supply across extended temperature ranges.

Supply support for OPA2726AIDGSRG4 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 OPA725/OPA726 product line was engineered for high-speed, low-noise precision signal conditioning in 16-bit data converters, optical sensing, and communications infrastructure-emphasizing ac performance, rail-to-rail operation, and robustness across −40°C to +125°C.

FAQ

What is the maximum operating supply voltage for OPA2726AIDGSRG4?

The OPA2726AIDGSRG4 has an absolute maximum supply voltage rating of +13.2V. Its specified operating range is ±2V to ±6V (dual) or +4V to +12V (single). Operation beyond +12V or below −6V risks permanent damage and violates the guaranteed specifications in the datasheet.

Does OPA2726AIDGSRG4 support rail-to-rail input?

No, OPA2726AIDGSRG4 does not support rail-to-rail input. Its input common-mode voltage range extends from V− to (V+) − 2V. While it includes ground in the CM range, it cannot accept signals at or above V+ − 2V, distinguishing it from true rail-to-rail input op amps.

How does the DGND pin function in OPA2726AIDGSRG4 shutdown operation?

The DGND pin on OPA2726AIDGSRG4 serves as the reference voltage for the Enable pin threshold. When DGND is tied to logic ground in dual-supply systems, the Enable pin activates (>VGND +2V) or shuts down (

Can OPA2726AIDGSRG4 drive capacitive loads without oscillation?

Yes, OPA2726AIDGSRG4 is unity-gain stable with capacitive loads up to 20pF. For larger loads, stability can be maintained by adding a 10Ω–20Ω series resistor inside the feedback loop (between output and inverting input), as documented in TI Application Report SBOS278B.

What is the typical input bias current of OPA2726AIDGSRG4 at 25°C?

The typical input bias current of OPA2726AIDGSRG4 at +25°C is 30pA, with a maximum of 200pA over the full −40°C to +125°C temperature range. This ultra-low bias current enables high-impedance sensor interfaces, such as photodiode transimpedance amplifiers, without significant offset error.