Texas Instruments ADS8371EVM

Overview

ADS8371EVM from Texas Instruments is a dedicated evaluation module for the ADS8371 - a 16-bit, 750-kSPS, parallel-interface SAR analog-to-digital converter - featuring onboard signal conditioning, dual-supply op-amp buffering (THS4031), integrated 2.5-V reference (REF1004-2.5) amplified to 4.096 V, and full access to control signals (CONVST, RD, BUSY, CS) for rapid prototyping of high-fidelity data acquisition systems.

For engineers reviewing the ADS8371EVM datasheet, ADS8371EVM pinout, ADS8371EVM application, or ADS8371EVM equivalent, this module supports direct integration with TMS320C5000/C6000 DSP platforms via the 5–6K interface card, enables AC-coupled 100-kHz sine wave evaluation with polypropylene input filtering, and provides configurable jumper-based memory-mapped addressing for stacking up to two EVMs in processor space.

Technical Context

The ADS8371EVM implements a precision analog front-end centered on the THS4031 inverting unity-gain buffer with RC anti-aliasing (12 Ω + 6800 pF) optimized for 100-kHz AC performance per the ADS8371 datasheet. It delivers a stable 4.096-V reference by amplifying the onboard REF1004-2.5 with the OPA627, and supports both dual-supply (±6 V) amplifier operation and single-supply alternatives via SJP2/SJP3 configuration.

Digital interfacing uses standard 0.1-inch headers (P2, P3, J2) with Samtec-compatible sockets: P2 carries address/control lines (A0–A2, DC_CS, INTc), P3 exposes all 16 buffered data bits (D0–D15), and J2 gives direct access to core ADC signals (CS, RD, CONVST, BYTE, BUSY), enabling flexible connection to microcontrollers, FPGAs, or TI DSP starter kits.

Key Specifications

Availability

ADS8371EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, DSP-based signal processing, and precision sensor interface development requiring stable component supply and immediate hardware validation capability.

Supply support for ADS8371EVM 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, embedded processing, and digital signal technologies, with decades of expertise in precision data converters and evaluation platforms.

The ADS8371EVM belongs to TI's precision data acquisition evaluation module family, designed explicitly to accelerate development of high-resolution, high-speed ADC applications in test equipment, medical instrumentation, and industrial automation.

FAQ

What is the primary function of the ADS8371EVM?

The ADS8371EVM is an evaluation module built to demonstrate and validate the ADS8371 16-bit, 750-kSPS SAR analog-to-digital converter. It provides complete analog signal conditioning (THS4031 buffer, 100-kHz-optimized RC filter), a calibrated 4.096-V reference path, and full parallel digital interface access - enabling engineers to rapidly prototype, characterize, and integrate the ADS8371 into real-world systems without designing from scratch.

Can the ADS8371EVM be used with TI DSP platforms like the C5000/C6000 series?

Yes - the ADS8371EVM is explicitly designed for interoperability with TI's TMS320C5000™ and TMS320C6000™ DSP platforms via the 5–6K interface card (SLAU104). Connectors P1, P2, and P3 plug directly into the 5–6K card, which maps the ADS8371EVM into processor memory space, allowing software-driven control of CONVST and RD while streaming digitized data over the 16-bit parallel bus.

What are the power supply requirements for the ADS8371EVM?

The ADS8371EVM requires three independent supplies: ±6 V for the THS4031 op-amp stage, +5 V for the analog section (ADS8371 core and REF1004), and either +3.3 V or +5 V for the digital buffers and address decoder. These can be applied via test points (TP3, TP5, TP9, TP12) or through the 10-pin J3 power connector, with W1 jumper selecting the digital supply source.

How does the ADS8371EVM handle reference voltage selection?

The ADS8371EVM offers dual reference options: the onboard REF1004-2.5 (2.5 V) amplified to 4.096 V by the OPA627, or an external reference applied to P1 pin 20. Jumpers SJP4 and SJP5 determine selection: factory default configures SJP4 (external disabled) and SJP5 (onboard buffered enabled), delivering 4.096 V to the ADS8371 REF+ pin as specified in SLAS390.

Is the ADS8371EVM suitable for AC performance evaluation at 100 kHz?

Yes - the ADS8371EVM's analog input stage is specifically tuned for 100-kHz AC performance per the ADS8371 datasheet (SLAS390). The THS4031 buffer, 12-Ω series resistor, and 6800-pF polypropylene capacitor form a low-pass filter that meets SNR, THD, and SFDR targets at that frequency; users are advised to use polypropylene capacitors in the signal path when distortion sensitivity is critical.