Texas Instruments OPA310IDBVR

Overview

OPA310IDBVR from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage (1.5V–5.5V), high-output-current (±150mA typical at 5.5V), fast-shutdown (0.9µs enable time) applications. It delivers 3MHz gain-bandwidth, ±250µV typical input offset voltage, and operates across –40°C to +125°C - enabling use in LED drivers, 4–20mA loop transmitters, and optical module biasing circuits.

For engineers reviewing the OPA310IDBVR datasheet, OPA310IDBVR pinout, OPA310IDBVR application, or OPA310IDBVR equivalent, this page provides verified electrical specifications, SOT-23-5 package terminal mapping, real-world application context for current-sensing and reference buffering, and validated alternative parts with documented functional and interface differences.

Technical Context

The OPA310IDBVR employs a robust CMOS input stage with fail-safe inputs (no diode to V+), integrated RFI/EMI filtering on input pins, and unity-gain stability into 250pF capacitive loads. Its output stage supports rail-to-rail swing with <10mV output voltage drop at 10kΩ load and 5.5V supply, while maintaining phase margin ≥60° under standard test conditions.

It features internal thermal shutdown and current-limit protection, enabling reliable operation in high-current drive scenarios such as laser diode biasing or programmable current sources. The device draws only 165µA per channel quiescent current and achieves 0.6µs overload recovery time - critical for precision analog signal chains requiring fast settling and low power.

Key Specifications

Pinout & Package

OPA310IDBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, with exposed pad option for enhanced thermal performance. Pin 1 is OUT; Pin 2 is V–; Pin 3 is IN+; Pin 4 is IN–; Pin 5 is V+. All pins are surface-mount compatible and support reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA310IDBVR, OPA320AIDBVR trades output drive and EMI resilience for superior DC precision, while TLV9061IDBVR prioritizes AC performance at the expense of load-driving capability and thermal robustness in continuous high-current operation.

Availability

OPA310IDBVR is available at Aetrix Electronics and suitable for optical transceiver design, industrial 4–20mA loop systems, and automotive LED lighting applications requiring stable component supply, extended temperature qualification, and consistent parametric performance across production lots.

Supply support for OPA310IDBVR 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 OPA310 family was designed specifically for low-voltage, high-output-current analog signal conditioning in space-constrained, thermally demanding applications - including optical communications, industrial automation, and portable instrumentation.

FAQ

What is the maximum capacitive load the OPA310IDBVR can drive without oscillation?

The OPA310IDBVR is characterized to drive up to 250pF without sustained oscillations under unity-gain configuration with 10kΩ load to mid-supply. This eliminates the need for series isolation resistors in LCD biasing or long-cable sensor interfaces. Stability is maintained across temperature and supply voltage ranges, making it suitable for designs where layout parasitics or connector capacitance exceed typical 50–100pF thresholds.

Does the OPA310IDBVR have built-in ESD protection, and what are its HBM ratings?

Yes, the OPA310IDBVR features robust ESD protection with ±8000V HBM (Human Body Model) and ±1500V CDM (Charged Device Model) ratings. Its fail-safe input structure - with no diode from inputs to V+ - prevents latch-up during overvoltage events and allows input signals up to 6V beyond V– without damage, enhancing reliability in industrial field-connected equipment.

Can the OPA310IDBVR operate from a single 1.8V supply, and how does performance change vs. 5.5V?

Yes, the OPA310IDBVR operates from 1.5V to 5.5V. At 1.8V, gain-bandwidth drops to 2.5MHz (vs. 3MHz at 5.5V), slew rate reduces to 2.8V/µs (vs. 3V/µs), and output swing degrades slightly (e.g., 21mV from rail at 2kΩ load). However, key specs like input offset (±250µV), quiescent current (165µA), and temperature range remain fully specified - enabling low-power sensor nodes and wearables.

Is the OPA310IDBVR pin-compatible with other members of the OPAx310 family?

No - the OPA310IDBVR (5-pin SOT-23) is not pin-compatible with the OPA310S (6-pin SOT-23 with SHDN) or dual/quad variants. Its pinout (OUT-V–-IN+-IN–-V+) is unique to the single-channel non-shutdown version. Substituting with OPA310S requires PCB layout changes to accommodate the additional SHDN pin and revised routing.

What thermal considerations apply when using the OPA310IDBVR at ±150mA output current?

At ±150mA continuous output into a shorted load at 5.5V, power dissipation exceeds 825mW - exceeding the SOT-23 package's thermal limits. Derating is essential: sustained high-current operation requires careful thermal design, including PCB copper pour under the exposed pad, airflow, or limiting duty cycle. Thermal shutdown activates at TJ > 150°C to prevent damage.