Texas Instruments THS4151EVM

Overview

The THS4151EVM from Texas Instruments is an evaluation module designed to characterize the THS4151 fully differential operational amplifier in high-speed signal conditioning applications. It supports single-ended and differential input/output configurations, features 50-Ω impedance-matched terminations, VOCM direct control, and ±5 V to ±15 V dual-supply operation - enabling validation of gain, bandwidth, phase margin, and filter response up to 100 MHz.

For engineers reviewing the THS4151EVM datasheet, THS4151EVM pinout, THS4151EVM application, or THS4151EVM equivalent, this module serves as a reference PCB layout for high-speed op-amp design, supports differential probe measurement at input/output nodes (J1–J4), enables Butterworth filter implementation (1 MHz –3 dB corner), and provides configurable termination, level-shifting, and transformer-coupled signal paths.

Technical Context

The THS4151EVM implements the THS4151CDGN (8-pin DGN package) in a 4-layer PCB with dedicated ground and ±VCC planes, optimized for minimal parasitic inductance and controlled-impedance signal routing. It includes jumper-selectable configurations for single-ended input/differential output, fully differential I/O, VICR level shifting, and multiple-feedback low-pass filtering.

Key design elements include 0805/1206 precision resistors (0.01%–1%), 0.1 µF ceramic and 6.8 µF tantalum supply bypassing, SMA connectors (J1–J4), banana jacks (J6–J9), and differential test points. The board measures 4.5" × 2.5" and ships pre-populated for unity-gain default operation with 374 Ω/402 Ω feedback networks and 49.9 Ω terminations.

Key Specifications

Availability

The THS4151EVM is available at Aetrix Electronics and suitable for high-speed analog design validation, ADC driver characterization, differential signal chain prototyping, and RF front-end development requiring stable component supply and traceable evaluation hardware.

Supply support for THS4151EVM 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 analog ICs for industrial, automotive, and communications systems.

The THS4151EVM belongs to TI's high-speed amplifier evaluation platform family, engineered to accelerate design-in of fully differential op-amps in data acquisition, medical imaging, and communications infrastructure where bandwidth, distortion, and layout fidelity are critical.

FAQ

What is the primary function of the THS4151EVM?

The THS4151EVM is a Texas Instruments evaluation module used to validate the performance of the THS4151 fully differential operational amplifier. It enables engineers to test gain, bandwidth, phase margin, differential output swing, and filter response under real-world PCB conditions. The THS4151EVM includes pre-routed signal paths, impedance-matched connectors, and configurable jumpers to support multiple circuit topologies without soldering.

Does the THS4151EVM support both single-ended and differential signal configurations?

Yes, the THS4151EVM supports both configurations. By default, it is populated for single-ended input to differential output (gain = 1). Additional footprints and jumpers allow reconfiguration for fully differential input/output, transformer-coupled I/O, VICR level shifting, and antialiasing filter implementation - all documented in the SLOU109 user's guide schematics (Figures 1–3 through 1–6).

What power supply requirements does the THS4151EVM have?

The THS4151EVM operates from ±5 V to ±15 V dual supplies, matching the THS4151CDGN's rated range. It requires two independent, well-regulated outputs with current capability ≥100 mA per rail. Current draw is verified using inline meters on J7 (VCC+) and J8 (VCC–); typical quiescent current is <20 mA per rail at ±5 V, rising with output loading and supply voltage.

Can the THS4151EVM be used to evaluate filter designs?

Yes - the THS4151EVM includes dedicated footprints and layout for a 1 MHz Butterworth low-pass filter using multiple-feedback topology (Figure 2–4). Component values (e.g., 787 Ω, 732 Ω, 100 pF, 220 pF) are specified in the Bill of Materials (Table 2–1), and measured frequency response (gain/phase vs. frequency) is provided in Figure 2–5 of the SLOU109 guide.

Is the THS4151EVM compatible with differential probing equipment?

Yes - the THS4151EVM features dedicated differential probe terminals at J1 (input), J3 (VO–), and J4 (VO+), with adjacent GND holes for minimal loop area. Resistors R1a/R1b/R4a/R4b are installed as 0 Ω links to provide low-impedance probe access. This configuration supports accurate >50 MHz differential measurements without signal degradation from adapters or long ground leads.