Texas Instruments OPA2310IDR

Overview

OPA2310IDR from Texas Instruments is a dual-channel, rail-to-rail input/output operational amplifier optimized for low-voltage (1.5V–5.5V), high-output-current applications. It delivers ±150mA short-circuit current at 5.5V, 3MHz gain-bandwidth product, and 165µA/ch quiescent current, enabling use in LED drivers, 4–20mA loop transmitters, and optical module biasing circuits.

For engineers reviewing the OPA2310IDR datasheet, OPA2310IDR pinout, OPA2310IDR application, or OPA2310IDR equivalent, key selection criteria include its fast 0.9µs enable time from shutdown, fail-safe inputs (no diodes to V+), ±250µV typical input offset voltage, robust 250pF capacitive load drive capability, and operation across –40°C to +125°C industrial temperature range.

Technical Context

The OPA2310IDR implements a fully differential input stage with rail-to-rail common-mode input range extending 0.1V beyond both rails and output swing within 7mV of rails at 10kΩ load. Its internal RFI/EMI filtering suppresses 1.8GHz interference with 75dB rejection, and phase margin remains ≥60° under unity-gain conditions with 10pF load.

Designed for duty-cycled power-sensitive systems, the device features independent channel enable control via dedicated SHDN pins only in shutdown variants (e.g., OPA2310S); the OPA2310IDR itself is non-shutdown, simplifying bias networks but requiring external power sequencing for low-quiescent operation.

Key Specifications

Pinout & Package

OPA2310IDR is packaged in an 8-pin SOIC (D) package with exposed thermal pad connected to V– for enhanced thermal performance. Pin mapping is standardized across dual-channel variants and validated per TI SBOSAA1H Rev. H.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2322AIDR and LMV358QDR, the OPA2310IDR uniquely combines 3MHz bandwidth, ±150mA output, fail-safe inputs, and integrated EMI filtering-making it irreplaceable in optical module biasing and precision 4–20mA loop drivers demanding both speed and robustness.

Availability

OPA2310IDR is available at Aetrix Electronics and suitable for optical transceiver design, industrial 4–20mA transmitters, and precision reference buffering requiring stable component supply, extended temperature support, and verified production traceability.

Supply support for OPA2310IDR 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 innovation in precision amplifiers and signal chain solutions.

The OPAx310 family was designed specifically for high-output-current, low-voltage applications in optical communications, industrial automation, and portable instrumentation-emphasizing robustness, EMI immunity, and rail-to-rail performance.

FAQ

What is the maximum capacitive load the OPA2310IDR can drive without oscillation?

The OPA2310IDR is characterized to drive up to 250pF with no sustained oscillations under unity-gain conditions and 10kΩ load. This eliminates the need for series isolation resistors when interfacing with ADC inputs, long PCB traces, or piezoelectric sensors-reducing component count and preserving signal fidelity in precision measurement systems using the OPA2310IDR.

Does the OPA2310IDR have shutdown functionality?

No, the OPA2310IDR is the non-shutdown variant of the OPAx310 family. Shutdown capability is only available in the OPA2310S part numbers (e.g., OPA2310SIDR). The OPA2310IDR operates continuously when powered and requires external power gating or bias control for low-power duty cycling.

What is the input common-mode voltage range for the OPA2310IDR?

The OPA2310IDR supports rail-to-rail input with a common-mode range from (V–) – 0.1V to (V+) + 0.1V at 5.5V supply, and from V– to V+ at 1.8V supply. This allows direct interfacing with sensors and DACs operating near supply rails-critical for accurate signal acquisition in battery-powered systems using the OPA2310IDR.

Can the OPA2310IDR be used in single-supply configurations?

Yes, the OPA2310IDR is fully specified for single-supply operation from 1.5V to 5.5V. Its rail-to-rail input and output stages, combined with input common-mode range extending below V–, enable true single-supply designs such as 3.3V microphone preamps or 1.8V reference buffers without level-shifting circuitry-simplifying system architecture around the OPA2310IDR.

What thermal considerations apply to the OPA2310IDR in SOIC (D) package?

The OPA2310IDR in SOIC-8 (D) package has a junction-to-ambient thermal resistance (RθJA) of 139.0°C/W. To maintain reliable operation at full output current, the PCB must incorporate adequate copper pour connected to the exposed thermal pad (pin 4/V–) and limit ambient temperature per the –40°C to +125°C specification-especially critical in compact optical modules using the OPA2310IDR.