Texas Instruments ADC5140EVM-PDK

Overview

ADC5140EVM-PDK from Texas Instruments is an evaluation module (EVM) designed to demonstrate the TLV320ADC5140 quad-channel, 384-kHz audio analog-to-digital converter. It comprises a TLV320ADC5140IRTWR daughterboard and AC-MB motherboard, supporting differential line inputs (2-V_RMS full-scale), onboard microphone capture, USB/TDM/I2S digital audio output, and PurePath Console 3 GUI configuration.

For engineers reviewing the ADC5140EVM-PDK datasheet, ADC5140EVM-PDK pinout, ADC5140EVM-PDK application, or ADC5140EVM-PDK equivalent, this EVM enables rapid validation of high-SNR audio front-end performance, flexible ASI format configuration (TDM/I2S), MICBIAS-powered microphone testing, and system-level integration with host processors or audio analyzers via external ASI interface.

Technical Context

The ADC5140EVM-PDK implements a two-board architecture: the AC-MB provides power regulation (1.8 V/3.3 V IOVDD, AVDD), USB audio class 2.0 host interface, PCM9211-based optical/analog input routing, and external ASI header (J7) for BCLK/FSYNC/DIN/DOUT/GND. The TLV320ADC5140IRTWR daughterboard features four differential analog inputs (IN1P/IN1M through IN4P/IN4M), GPIO-configurable pins, MICBIAS output, and SPI/I²C control interfaces.

System-level timing is managed via selectable clock sources: USB-derived clocks (48 kHz default), PCM9211-synchronized optical input, or externally supplied MCLK/BCLK/FSYNC. The EVM supports real-time GUI-driven configuration including channel enable/disable, word length (16–32 bit), ASI protocol (TDM/I2S), slot assignment, MIC bias voltage selection (AVDD or dedicated LDO), and standby/active mode transitions.

Key Specifications

Availability

ADC5140EVM-PDK is available at Aetrix Electronics and suitable for audio subsystem validation, MEMS microphone characterization, USB audio class 2.0 development, and high-fidelity ADC performance benchmarking requiring stable component supply and full documentation support.

Supply support for ADC5140EVM-PDK 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 connectivity technologies, with leadership in precision signal chain and audio solutions.

The TLV320ADCx140 product line targets high-performance audio front-ends for smart speakers, voice assistants, professional audio interfaces, and automotive infotainment systems-emphasizing low-noise conversion, flexible digital audio interfacing, and robust microphone biasing.

FAQ

What is the primary function of the ADC5140EVM-PDK?

The ADC5140EVM-PDK is an evaluation module built around the TLV320ADC5140IRTWR audio ADC. Its primary function is to provide a complete, ready-to-use platform for evaluating the device's analog input performance, digital audio output flexibility (TDM/I2S), microphone interface capability, and register-level configuration via PurePath Console 3. The ADC5140EVM-PDK enables hardware-in-the-loop testing without custom PCB design.

Which audio input configurations does the ADC5140EVM-PDK support?

The ADC5140EVM-PDK supports three distinct audio input configurations: (1) differential line-level inputs via terminals J2–J5 (2-V_RMS full-scale); (2) onboard ICS-40720 MEMS microphone using MICBIAS (enabled by shorting J14); and (3) external analog/digital sources routed through the AC-MB's PCM9211 transceiver (optical S/PDIF or stereo analog). Each mode is hardware-selectable via jumpers and switches.

How is the ADC5140EVM-PDK powered and what voltage options are available?

The ADC5140EVM-PDK receives power through the AC-MB motherboard, which accepts either 5-V USB power (via micro-USB connector or J5 header) or an external 5-V supply (via J4 terminal). Onboard LDOs generate AVDD and selectable IOVDD (1.8 V or 3.3 V via J3 jumper) for the TLV320ADC5140IRTWR. Power status is indicated by green POWER and USB READY LEDs.

Can the ADC5140EVM-PDK operate with an external clock source?

Yes-the ADC5140EVM-PDK supports external clocking via the AC-MB's J7 header, which provides dedicated connections for MCLK, BCLK, FSYNC, DIN, DOUT, and GND. This allows direct synchronization with host processors, FPGA-based audio controllers, or test equipment such as Audio Precision analyzers-bypassing internal USB or PCM9211 clock generation.

What software tools are required to configure the ADC5140EVM-PDK?

Configuration requires Texas Instruments' PurePath Console 3 (PPC3) framework and the dedicated ADCx140EVM GUI plugin. PPC3 must be installed first from ti.com/tool/PUREPATHCONSOLE; the GUI then integrates into PPC3's App Center. The software provides real-time register read/write, ASI format selection, MIC bias control, clock monitoring, and configuration file (.ppc3) save/load functionality for the ADC5140EVM-PDK.