Texas Instruments OPA2357AIDGSR

Overview

OPA2357AIDGSR from Texas Instruments is a dual-channel, rail-to-rail input/output, 250-MHz unity-gain stable CMOS operational amplifier in a 10-pin VSSOP package. It delivers 150 V/µs slew rate, 6.5 nV/√Hz input voltage noise, and >100 mA output current per channel, enabling high-fidelity video buffering and photodiode transimpedance amplification in space-constrained systems.

For engineers reviewing the OPA2357AIDGSR datasheet, OPA2357AIDGSR pinout, OPA2357AIDGSR application, or OPA2357AIDGSR equivalent, key selection criteria include its dual independent amplifier architecture with channel-specific shutdown control, 2.5 V to 5.5 V single-supply operation, and guaranteed –40°C to +125°C performance for industrial and medical imaging signal chains.

Technical Context

The OPA2357AIDGSR implements a complementary differential input stage (N- and P-channel pairs) enabling rail-to-rail common-mode input range extending 100 mV beyond supply rails. Its class AB output stage supports 100-mV-from-rail swing into 1-kΩ loads while delivering ±100 mA continuous output current per channel.

Each channel features an independent Schmitt-triggered Enable pin (Enable A on Pin 5, Enable B on Pin 6), enabling fast 100 ns turn-on and 30 ns turn-off times. Channel-to-channel crosstalk is –100 dB at 5 MHz, confirming true functional isolation between amplifiers in the same package.

Key Specifications

Pinout & Package

The OPA2357AIDGSR is housed in a 3.00 mm × 3.00 mm VSSOP-10 package with exposed thermal pad (DGS), optimized for high-density PCB layouts and thermal dissipation in compact video processing modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2355IDGSR and LMH6629MA/NOPB, the OPA2357AIDGSR uniquely combines 250-MHz bandwidth, rail-to-rail input/output, per-channel shutdown, and 2.5-V operation in a 3-mm VSSOP - making it the only choice for compact, battery-aware, DC-coupled high-speed analog signal chains.

Availability

OPA2357AIDGSR is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, photodiode transimpedance amplification, optical networking, and active filter design requiring stable component supply across industrial, medical, and communications end equipment.

Supply support for OPA2357AIDGSR 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 high-performance op amps and precision signal chain solutions.

The OPA2357AIDGSR belongs to TI's OPAx357 family of high-speed CMOS op amps, engineered specifically for video, ultrasound, and optical applications demanding wide bandwidth, low noise, and rail-to-rail operation in minimal footprint packages.

FAQ

What is the maximum operating supply voltage for the OPA2357AIDGSR?

The OPA2357AIDGSR has an absolute maximum supply voltage of 7.5 V (V+ to V−), but its recommended operating range is 2.5 V to 5.5 V. Operating above 5.5 V risks exceeding safe junction temperatures and violates the specified electrical characteristics. The device is fully characterized from 2.7 V to 5.5 V, with quiescent current and bandwidth validated across this range. Always observe the 7.5-V absolute maximum to prevent permanent damage to the OPA2357AIDGSR.

Does the OPA2357AIDGSR support true rail-to-rail input operation?

Yes, the OPA2357AIDGSR supports rail-to-rail input with a common-mode voltage range extending 100 mV beyond both supply rails (V– – 0.1 V to V+ + 0.1 V). This is achieved via a complementary N- and P-channel input stage that seamlessly transitions between pairs. The specification is guaranteed over temperature and process variation, enabling direct interfacing with sensors, DACs, or other devices operating at supply extremes without level-shifting circuitry for the OPA2357AIDGSR.

How does the shutdown function work on the OPA2357AIDGSR?

The OPA2357AIDGSR features two independent CMOS-compatible shutdown pins: Enable A (Pin 5) and Enable B (Pin 6). Driving either pin low disables its respective amplifier channel, reducing quiescent current from 4.9 mA to 3.4 µA. The enable threshold is TTL-compatible: logic high ≥2.0 V (referenced to V–) enables operation; logic low ≤0.8 V disables it. Turn-on time is 100 ns and turn-off time is 30 ns, allowing precise gating of the OPA2357AIDGSR in time-critical applications.

Can the OPA2357AIDGSR drive 75-Ω video cables directly?

Yes, the OPA2357AIDGSR is explicitly characterized for 75-Ω video cable driving with back-termination. Its 0.02% differential gain and 0.09° differential phase error at NTSC frequencies meet broadcast video standards. When configured as a gain-of-two inverter with 75-Ω series output resistor and 75-Ω cable termination, the OPA2357AIDGSR maintains 40-MHz 0.1-dB gain flatness and delivers full-swing video signals without external buffers or AC-coupling components.

What is the thermal performance of the OPA2357AIDGSR in its VSSOP-10 package?

The OPA2357AIDGSR in the DGS (VSSOP-10) package has a junction-to-ambient thermal resistance (RθJA) of 171.3°C/W and junction-to-board (RθJB) of 93.1°C/W. Its thermal shutdown activates at 160°C junction temperature and resets at 140°C. For continuous 100-mA output into 50-Ω loads at 5 V, power dissipation exceeds 250 mW - requiring adequate copper pour or thermal vias beneath the exposed pad to maintain safe operating temperatures. This thermal behavior is documented in the OPA2357AIDGSR datasheet Section 6.4.