Texas Instruments ADS9817EVM

Overview

ADS9817EVM from Texas Instruments is an evaluation module designed specifically for the ADS9817, an 8-channel, 18-bit, 2-MSPS/channel successive approximation register (SAR) analog-to-digital converter with integrated PGA front-end and internal 4.096-V reference. It provides full hardware support-including SMA analog inputs, FMC connector for FPGA interfacing, REF7040 voltage reference option, and configurable clocking-and enables performance validation of SNR, THD, INL/DNL, and spectral linearity in lab or design verification environments.

For engineers reviewing the ADS9817EVM datasheet, ADS9817EVM pinout, ADS9817EVM application, or ADS9817EVM equivalent, this module delivers turnkey ADC evaluation capability when paired with the TSWDC155EVM controller board and Windows 10–based GUI software-supporting real-time data capture, FFT analysis, histogram generation, and linearity measurement without custom firmware development.

Technical Context

The ADS9817EVM implements a complete signal chain for the ADS9817 SAR ADC, including differential/single-ended analog input paths via eight SMA connectors (AIN1P/M through AIN8P/M), on-board REF7040 4.096-V precision reference, and flexible clock sourcing via FMC_SMPL_CLKP/M or external SMA J14. It supports ±2.5 V to ±12 V input ranges through PGA configuration and uses SPI for register control alongside parallel CMOS digital output (D0–D3) for high-speed data streaming.

Digital interface signals-including SCLK, SDI, SDO, CSn, SPI_EN, DCLKOUT, FCLKOUT, SMPL_SYNC, and PWDNn-are routed to a standard FMC-LPC connector (ASP-134488-01) and accessible via test points. Power is derived either from the TSWDC155EVM (3.3 V → boosted 5.4 V → LDO-regulated AVDD_5V, DVDD_1V8, IOVDD_1V8) or externally via J1 terminal block (5.2–5.5 V).

Key Specifications

Availability

ADS9817EVM is available at Aetrix Electronics and suitable for high-precision data acquisition, industrial process monitoring, power quality analysis, and test & measurement equipment requiring stable component supply and validated ADC evaluation infrastructure.

Supply support for ADS9817EVM 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 data conversion technologies.

The ADS9817EVM belongs to TI's precision ADC evaluation platform family, engineered to accelerate validation of high-resolution, multi-channel SAR converters in demanding applications such as energy metering, medical instrumentation, and automated test equipment.

FAQ

What is the primary function of the ADS9817EVM?

The ADS9817EVM is a dedicated evaluation module for the ADS9817 8-channel, 18-bit, 2-MSPS SAR ADC. It provides all necessary analog front-end circuitry, digital interface routing, reference options, and software integration to validate key performance metrics-including SNR, THD, INL/DNL, and spectral purity-without requiring custom PCB design or firmware development. The ADS9817EVM must be used with the TSWDC155EVM controller board and ADS9817EVM-GUI software to operate.

Does the ADS9817EVM include the ADS9817 IC?

Yes, the ADS9817EVM includes one ADS9817RSHT device mounted on the PCB. This is the exact 8-channel, 18-bit, 2-MSPS SAR ADC with integrated PGA and internal 4.096-V reference that the module is designed to evaluate. The ADS9817EVM hardware implements full signal conditioning, clock distribution, power regulation, and digital I/O routing specifically for this IC, enabling out-of-the-box performance characterization.

What external hardware is required to operate the ADS9817EVM?

The ADS9817EVM requires the TSWDC155EVM digital controller board (sold separately) to provide USB communication, FPGA programming, digital I/O signals, and regulated power. It also requires a Windows 10 (64-bit) PC with the ADS9817EVM-GUI software installed and appropriate USB drivers. An external low-jitter clock source (via SMA J14) and analog signal generator are optional but recommended for full performance validation.

Can the ADS9817EVM be used with other FPGA development boards besides the TSWDC155EVM?

The ADS9817EVM features a standard FMC-LPC connector compatible with many FPGA kits, and its digital I/O signals (SPI, CMOS data, clocks, controls) are exposed on that interface. However, TI's official ADS9817EVM-GUI software only supports communication and control via the TSWDC155EVM. Third-party FPGA integration is possible but requires custom firmware, driver development, and signal timing validation-TI does not provide documentation or support for non-TSWDC155EVM use cases.

How is analog input configured on the ADS9817EVM?

Analog input on the ADS9817EVM is configured via eight differential SMA pairs (AIN1P/M through AIN8P/M). Each negative input (e.g., AIN1M) can be shorted to GND using jumpers JP1–JP11 to enable single-ended operation. Input voltage range (±2.5 V to ±12 V) is set via the ADS9817's internal PGA and controlled through the GUI. First-order RC low-pass filter footprints (0402) are provided per channel but unpopulated by default to preserve AC performance unless intentionally added.