Texas Instruments ADS8372EVM

Overview

ADS8372EVM from Texas Instruments is a fully featured evaluation board for the ADS8372 - a 16-bit, 600 kSPS, high-speed serial-interface analog-to-digital converter (ADC) with pseudo-bipolar differential input capability. It integrates on-board signal conditioning using the THS4131 fully differential amplifier, a REF1004C-2.5 voltage reference buffered to 4.1 V, and digital buffers (SN74AHC1G125) for clean SPI-compatible interface operation. The EVM supports ±15 V op amp supplies, +5 V analog, and +3.3 V or +5 V digital rails - enabling lab validation of precision data acquisition in test instrumentation and industrial control systems.

For engineers reviewing the ADS8372EVM datasheet, ADS8372EVM pinout, ADS8372EVM application, or ADS8372EVM equivalent, this page delivers verified technical context including analog input configuration options (single-ended or fully differential), jumper-controlled reference selection (internal, onboard REF1004C-2.5, or external), serial interface signal mapping (CS, SCLK, FS, SDO, BUSY, CONVST, PD), and power supply routing via J3 or test points TP1–TP4.

Technical Context

The ADS8372EVM implements a complete signal chain optimized for AC performance: the THS4131 buffer is factory configured in unity-gain, single-ended-to-differential mode with VOCM set to 2.0 V, supporting pseudo-bipolar differential input to the ADS8372IBRHPT ADC. Input path uses C0G ceramic capacitors (68 pF, 6800 pF) per TI's AC performance guidance, and resistor pads (R3/R4/R16/R31) allow reconfiguration for fully differential input.

Digital interface follows the ADS8372's native serial protocol - CS-active-low, frame-synchronized SDO output, and dedicated CONVST, BUSY, and PD signals routed to dual-row Samtec P2 header. Power architecture separates analog (±15 V, +5 V AVCC) and digital (+3.3 V/+5 V BVDD) domains with ferrite beads (L1–L4) and decoupling networks (C2–C5, C14–C15, C24–C27, C47–C54).

Key Specifications

Availability

ADS8372EVM is available at Aetrix Electronics and suitable for test instrumentation, industrial process monitoring, and high-fidelity data acquisition systems requiring stable component supply, full signal-chain validation, and rapid prototyping support.

Supply support for ADS8372EVM 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-performance data conversion technologies.

The ADS8372EVM belongs to TI's precision data acquisition evaluation platform family, designed to accelerate development of high-resolution, high-speed ADC-based systems in test & measurement, industrial automation, and medical instrumentation.

FAQ

What is the primary function of the ADS8372EVM?

The ADS8372EVM is an evaluation board built around the ADS8372IBRHPT 16-bit, 600 kSPS SAR ADC. Its primary function is to provide a complete, lab-ready signal chain - including THS4131 input buffering, REF1004C-2.5 reference conditioning, and SN74AHC1G125 digital interfacing - enabling engineers to validate AC performance (SNR, THD, SFDR), evaluate layout practices, and prototype system integration without designing from scratch. The ADS8372EVM supports both single-ended and fully differential analog input configurations.

Which ADC does the ADS8372EVM evaluate, and what are its key electrical specs?

The ADS8372EVM evaluates the ADS8372IBRHPT - a 16-bit, successive-approximation-register (SAR) analog-to-digital converter with 600 kSPS maximum sampling rate, pseudo-bipolar differential input range, and serial (SPI-compatible) digital interface. Key specs include 92 dB SNR, –105 dBc THD, and 100 kHz small-signal bandwidth. The ADS8372EVM's circuitry - especially the THS4131 buffer and C0G capacitor selection - is specifically optimized to achieve these published AC specifications per SLAS451 and SLAU160.

How is the analog input configured on the ADS8372EVM, and can it be modified?

The ADS8372EVM ships with the THS4131 configured as a unity-gain, single-ended-to-differential buffer, with VOCM factory-set to 2.0 V via RP1 potentiometer. Single-ended input is applied at P1 pin 2 (+IN) or SMA J2; –IN connects to P1 pin 1 or SMA J1. To convert to fully differential input, install R4 and R31 and remove R16 - per Section 2.1 and Figure 1 of SLAU160. This hardware-modifiable topology allows users to match the ADS8372EVM's input stage to their source impedance and signal type without redesigning the PCB.

What reference voltage options does the ADS8372EVM support?

The ADS8372EVM supports three reference configurations: (1) internal 4.096 V reference from ADS8372 pin 9 (enabled by SJP4 shorted), (2) onboard REF1004C-2.5 buffered to 4.1 V by OPA627AU (default shipped configuration), or (3) user-supplied external reference applied to P1 pin 20 and optionally buffered/filtered. Jumper settings SJP1–SJP5 and W1–W5 (documented in Table 2 of SLAU160) provide unambiguous, hardware-selectable routing - ensuring the ADS8372EVM accommodates diverse system-level reference architectures.

Can the ADS8372EVM interface directly with common processor or FPGA development platforms?

Yes - the ADS8372EVM is designed for direct interoperability with TI's C5000/C6000 DSP starter kits via the 5-6K interface card (SLAU104). Its P1 and P2 dual-row Samtec headers (0.1" pitch) mate with standard ribbon cables or breadboard adapters, allowing connection to FPGAs, microcontrollers, or logic analyzers. All critical digital signals - CS, SCLK, FS, SDO, BUSY, CONVST, and PD - are exposed on P2 per Table 3, and level-compatible with 3.3 V or 5 V logic families, making the ADS8372EVM suitable for rapid software-driven validation across embedded platforms.