Texas Instruments THS4226EVM

Overview

THS4226EVM from Texas Instruments is an evaluation module designed to test and validate the THS4226 dual high-speed voltage-feedback operational amplifier in 10-pin MSOP (DGQ) package. It supports dual-supply operation from ±1.35 V to ±7.5 V or single-supply from 2.7 V to 15 V, delivers >800 MHz gain-bandwidth product, features independent power-down pins per channel, and enables rapid prototyping of video gain stages, ADC drivers, and high-fidelity signal conditioning circuits.

For engineers reviewing the THS4226EVM datasheet, THS4226EVM pinout, THS4226EVM application, or THS4226EVM equivalent, this page provides verified hardware configuration details, measured performance boundaries, default circuit topologies (inverting/noninverting video gain), power-down timing behavior, and PCB layout best practices for high-speed op-amp evaluation.

Technical Context

The THS4226EVM implements two independent evaluation channels-Channel 1 configured as a +2 noninverting gain stage by default, Channel 2 as a +1 unity-gain buffer-both based on the THS4226DGQ IC. Each channel includes 50-Ω input matching (R3/R10), 453-Ω/49.9-Ω output loading networks, and dedicated power-down control (PD1/PD2) that reduces quiescent current from 14 mA to 700 µA per channel.

It integrates TI's PowerPAD thermally enhanced PCB layout with four-layer construction: top signal layer, internal ground plane (Layer 2), internal power plane (Layer 3), and bottom mixed signal/ground layer (Layer 4). Decoupling follows SLOA069 guidelines with 0.1 µF ceramic (C7/C8) and 100 pF ceramic (C3/C4) capacitors, plus ferrite beads (FB1/FB2) and 22 µF tantalum bulk caps (C5/C6) for supply ripple rejection.

Key Specifications

Availability

THS4226EVM is available at Aetrix Electronics and suitable for high-speed analog design validation, video signal chain development, and ADC driver characterization requiring stable component supply and documented reference implementation.

Supply support for THS4226EVM 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 company specializing in analog, embedded processing, and high-performance signal chain solutions, with over 90 years of innovation in amplifiers, data converters, and interface technologies.

The THS4226EVM belongs to TI's High Performance Linear Products evaluation platform family, engineered specifically to accelerate design-in of ultra-high-speed op amps in video, test equipment, and communications infrastructure applications.

FAQ

What is the primary function of the THS4226EVM?

The THS4226EVM is a Texas Instruments evaluation module built around the THS4226 dual high-speed op amp. Its primary function is to provide a validated, ready-to-use hardware platform for evaluating key performance parameters-including bandwidth, slew rate, settling time, and power-down behavior-of the THS4226DGQ IC under real-world signal conditions. The THS4226EVM allows engineers to rapidly prototype inverting/noninverting video gain stages, ADC front-ends, and high-fidelity signal paths without custom PCB design.

Does the THS4226EVM support both single-supply and dual-supply operation?

Yes, the THS4226EVM supports both configurations. For dual-supply operation, it accepts ±1.35 V to ±7.5 V across J7 (VS–) and J9 (VS+), with J8 tied to GND. For single-supply use, J7 and J8 are both connected to GND while J9 supplies 2.7 V to 15 V. This flexibility allows the THS4226EVM to emulate diverse system-level power architectures during evaluation of the THS4226 IC.

How does the power-down functionality work on the THS4226EVM?

The THS4226EVM exposes the THS4226's dedicated power-down pins (PD1 and PD2) via test points PD1 and PD2. Driving either pin toward the negative supply rail disables the corresponding amplifier channel, reducing quiescent current from 14 mA to 700 µA. The THS4226EVM does not include active logic-level translation; users must supply appropriate voltage thresholds relative to the rails. Power-on/off transition times are in the microsecond range, as specified in the THS4226 data sheet (SLOS399).

Can the THS4226EVM be used for differential signal evaluation?

No-the THS4226EVM is not configured for true differential input/output evaluation. While the THS4226 IC itself supports differential configurations, the THS4226EVM board implements only single-ended topologies: Channel 1 uses noninverting gain with V1in+ (J2) and V1in– (J3) referenced to GND, and Channel 2 uses unity-gain buffering with V2in+ (J5) and V2out (J6). Differential evaluation requires custom modifications to the THS4226EVM schematic and layout beyond the default THS4226EVM configuration.

What documentation accompanies the THS4226EVM?

The THS4226EVM ships with the SLOU157 User's Guide (May 2003), which includes full schematic (Figure 1–1), bill of materials (Table 4–1), connection diagrams (Figure 2–1), application examples (inverting/noninverting video gain), PCB layer drawings (Figures 4–1 to 4–4), and critical safety warnings regarding voltage limits, thermal management, and ESD handling. Additional supporting documents referenced include the THS4226 data sheet (SLOS399), SLOA069 decoupling guide, and SLOA102 high-speed layout tips-all accessible via TI's official website.