Texas Instruments OPA354AIDDAR

Overview

OPA354AIDDAR from Texas Instruments is a single-channel, rail-to-rail input/output, voltage-feedback CMOS operational amplifier optimized for high-speed video and precision analog signal conditioning. It delivers 250-MHz small-signal bandwidth, 150 V/µs slew rate, 6.5 nV/√Hz input voltage noise, ±100 mA output current, and operates from 2.5 V to 5.5 V supply - enabling use in 75-Ω video line drivers, photodiode transimpedance amplifiers, and ADC/DAC interface circuits.

For engineers reviewing the OPA354AIDDAR datasheet, OPA354AIDDAR pinout, OPA354AIDDAR application, or OPA354AIDDAR equivalent, key selection criteria include its unity-gain stability, thermal shutdown protection, 100-mV rail-to-rail output swing at 1-kΩ load, differential gain/phase performance (0.02%/0.09°), and compatibility with SOT-23 and HSOP PowerPAD packages.

Technical Context

The OPA354AIDDAR employs a complementary CMOS input stage enabling rail-to-rail common-mode input range extending 100 mV beyond both supply rails, paired with a Class AB output stage delivering full 100-mA continuous output current. Its 100-MHz gain-bandwidth product and 250-MHz unity-gain bandwidth support stable operation at G = +1 while maintaining low distortion across video and communication frequencies.

Thermal shutdown activates at 160°C junction temperature and resets at 140°C, ensuring robustness under overload. The device is fully specified over –40°C to +125°C and supports single-supply operation down to 2.5 V, making it suitable for portable and industrial systems requiring wide dynamic range and fast settling (30 ns to 0.1%).

Key Specifications

Pinout & Package

OPA354AIDDAR is packaged in an 8-pin HSOP (PowerPAD™) with body size 4.89 mm × 3.90 mm. The exposed thermal pad (PowerPAD) must be connected to V− or left floating per TI design guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA354AIDDAR, OPA355IDBVR trades rail-to-rail input capability for lower power and slightly reduced bandwidth, while LMH6629MA/NOPB offers extreme speed at the cost of noise, input bias, and integrated protection - making OPA354AIDDAR the balanced choice for video, imaging, and precision high-speed analog interfaces.

Availability

OPA354AIDDAR is available at Aetrix Electronics and suitable for video processing, photodiode transimpedance amplification, and analog-to-digital converter input buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for OPA354AIDDAR 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 deep expertise in high-performance op amps, data converters, and power management ICs.

The OPAx354 family was designed specifically for demanding video, ultrasound, optical networking, and high-speed data acquisition systems - emphasizing unity-gain stability, rail-to-rail operation, and robust thermal protection in compact packages.

FAQ

What is the maximum continuous output current of the OPA354AIDDAR?

The OPA354AIDDAR delivers ±100 mA continuous output current into resistive loads at VS = 5 V, as confirmed in Section 7.7 of the SBOS233G datasheet. This rating applies across the full –40°C to +125°C operating temperature range and supports direct driving of 75-Ω video cables and parallel-connected loads without external current boosting. Peak short-circuit current reaches ~200 mA before thermal shutdown engages.

Does the OPA354AIDDAR support true rail-to-rail input operation?

Yes, the OPA354AIDDAR features a complementary CMOS input stage that extends the common-mode input voltage range to (V−) −0.1 V and (V+) + 0.1 V - exceeding both supply rails by 100 mV. This is explicitly documented in the Electrical Characteristics table (VCM parameter) and Feature Description section 8.3.2 of the SBOS233G datasheet, enabling DC-coupled operation in single-supply systems without level shifting.

What package type does OPA354AIDDAR use, and how is thermal management handled?

OPA354AIDDAR uses the 8-pin HSOP PowerPAD™ package (body size 4.89 mm × 3.90 mm) with an exposed thermal pad. Per TI's layout guidelines, the PowerPAD must be connected to V− or left floating - not grounded - to maintain proper internal biasing. Thermal resistance is RθJA = 42.5°C/W, allowing reliable ±100 mA operation without external heatsinking when properly soldered to a 2-layer PCB with thermal vias.

Can the OPA354AIDDAR drive capacitive loads, and what is the recommended isolation resistor?

The OPA354AIDDAR is not inherently stable into large capacitive loads. Figure 14 in the SBOS233G datasheet specifies a minimum series isolation resistor (RS) of 120 Ω for 100-pF loads and 140 Ω for 47-pF loads to maintain phase margin. For general-purpose use with unknown or variable capacitance (e.g., PCB traces, connectors), a 100-Ω RS is commonly applied between the output and load to ensure stability without degrading bandwidth below 40 MHz (0.1-dB flatness).

What is the differential gain and phase performance of the OPA354AIDDAR in video applications?

The OPA354AIDDAR achieves 0.02% differential gain error and 0.09° differential phase error under NTSC conditions with RL = 150 Ω, as measured and guaranteed in the Electrical Characteristics table (Section 7.7). This performance is maintained across the full –40°C to +125°C temperature range and enables direct use in broadcast-quality RGB, YUV, and composite video line drivers without external calibration or passive component tuning.