Texas Instruments ADS8361EVM

Overview

ADS8361EVM from Texas Instruments is an evaluation module designed for the ADS8361 - a 16-bit, dual-channel, 500-kSPS simultaneous-sampling serial analog-to-digital converter with 2+2 analog inputs, internal 2.5-V reference, and operation from 2.7 V to 3.6 V digital/analog supplies. It supports single-ended or differential analog input configurations and enables full functional validation of timing, noise, linearity, and serial interface performance in precision data acquisition systems.

For engineers reviewing the ADS8361EVM datasheet, ADS8361EVM pinout, ADS8361EVM application, or ADS8361EVM equivalent, this board provides direct access to all ADC control signals (CS, SCLK, FS, INT, CSTART), configurable analog input channels (A0/A1/B0/B1), mode-select jumpers (M0/M1/A0), and flexible power/reference options - critical for validating high-resolution sensor interfacing, motor control feedback, and industrial process monitoring designs.

Technical Context

The ADS8361EVM implements a complete signal chain for the ADS8361 ADC, including on-board OPA2365 rail-to-rail op-amps for analog buffering, discrete RC filtering on all analog inputs, and dual 10-pin Samtec headers (J1/J2) for standardized analog/digital breakout. It supports simultaneous sampling across two independent 2-channel pairs (A and B), with configurable frame sync and chip select timing aligned to TI's serial interface protocol.

Power architecture separates AVDD (5 V via J3) and DVDD (2.7–3.6 V via J4), with onboard ferrite beads (L1/L2) and multi-tier decoupling (100 pF to 10 µF ceramics). Reference configuration is selectable between internal 2.5-V reference or external source via J1.20 and jumper W1, enabling evaluation under both buffered and unbuffered reference conditions.

Key Specifications

Availability

ADS8361EVM is available at Aetrix Electronics and suitable for precision data acquisition, industrial motor control feedback, medical instrumentation prototyping, and test & measurement equipment development requiring stable component supply and validated reference design integration.

Supply support for ADS8361EVM 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 for industrial, automotive, and communications markets.

The ADS8361EVM belongs to TI's precision data converter evaluation platform family, engineered to accelerate validation of high-resolution, low-noise ADCs in demanding real-world signal chains - particularly where simultaneous sampling, serial interface robustness, and reference flexibility are essential.

FAQ

What is the primary function of the ADS8361EVM?

The ADS8361EVM is a dedicated evaluation module for the ADS8361 16-bit dual-channel ADC. It provides full hardware access to all analog inputs (A0/A1/B0/B1), digital control lines (CS, SCLK, FS, INT, CSTART), mode-select jumpers (M0/M1/A0), and reference configuration options. Its purpose is to enable rapid, accurate characterization of the ADS8361's performance - including SNR, THD, INL, DNL, and serial timing - in real system contexts before final PCB integration.

Does the ADS8361EVM support both single-ended and differential analog inputs?

Yes, the ADS8361EVM supports both configurations. The analog interface header J1 provides direct access to all eight differential input terminals (A0+/A0−, A1+/A1−, B0+/B0−, B1+/B1−), allowing users to wire external sources as either fully differential pairs or single-ended signals referenced to AGND. Internal routing preserves signal integrity regardless of configuration, and the ADS8361 itself handles both modes natively per its datasheet specification.

Can the ADS8361EVM be powered from a single 3.3-V supply?

No - the ADS8361EVM requires separate analog and digital supplies. J3 accepts 5 V for AVDD (analog section), while J4 accepts 2.7–3.6 V for DVDD (digital section). This split-supply requirement reflects the ADS8361's internal architecture. Using a single 3.3-V source on J4 alone will power the digital logic but leave the analog front-end unpowered; both J3 and J4 must be energized for full operation of the ADS8361EVM.

How does the ADS8361EVM handle reference voltage selection?

The ADS8361EVM uses jumper W1 to select between internal and external reference modes. With W1 open, the ADS8361 uses its internal 2.5-V reference. To use an external reference, place the shunt on W1 pins 2–3 and apply the reference voltage (≤2.525 V) to J1.20 (REFIN). This configuration is verified in the SLAU094A User's Guide and matches the ADS8361's documented reference input specifications.

Is the ADS8361EVM compatible with the ADS7861 and ADS7863 devices?

The ADS8361EVM shares the same physical board layout and interface structure with the ADS7861EVM and ADS7863EVM - collectively referred to as the ADS7861/8361/7863EVM platform. While mechanical and connector compatibility exists, electrical behavior differs: the ADS7861 operates at 5 V DVDD/AVDD and is 12-bit, while the ADS7863 is 12-bit with wider DVDD range (2.7–5.5 V). The ADS8361EVM is specifically configured and validated for the ADS8361's 2.7–3.6 V supply and 16-bit performance envelope.