Texas Instruments TLV320ADC3101EVM-K

Overview

TLV320ADC3101EVM-K from Texas Instruments is a complete USB-based evaluation kit for the TLV320ADC3101 stereo audio ADC, featuring dual onboard microphones, line-in jack J9, analog input terminal blocks (J6–J8), I²C register control, and real-time streaming audio capture via TAS1020B USB controller. It supports 24-bit/96-kHz stereo conversion, programmable AGC, biquad filtering, and flexible clock routing for embedded audio system prototyping.

For engineers reviewing the TLV320ADC3101EVM-K datasheet, TLV320ADC3101EVM-K pinout, TLV320ADC3101EVM-K application, or TLV320ADC3101EVM-K equivalent, this module enables rapid validation of microphone interface design, I²C register configuration, digital audio interface timing (I²S/BCLK/WCLK/MCLK), and AGC behavior in Windows-based development environments.

Technical Context

The TLV320ADC3101EVM-K consists of two interlocked PCBs: the TLV320ADC3101EVM (double-wide modular board) and the USB-MODEVM motherboard. The latter integrates the TAS1020B USB audio controller (8051 core) to provide power, I²C control, and I²S data streaming - eliminating external host hardware requirements.

It operates in two modes: USB-connected (default, powered and controlled via single cable) or stand-alone (external DC supply via J3). Analog signal paths include selectable single-ended/differential inputs with PGA gain, MICBIAS generation, and configurable input routing; digital signal routing supports BCLK/WCLK direction control, DOUT pin multiplexing, and GPIO-assisted digital microphone interfaces.

Key Specifications

Availability

TLV320ADC3101EVM-K is available at Aetrix Electronics and suitable for audio subsystem validation, microphone interface qualification, I²C register-level firmware development, and real-time digital audio path testing requiring stable component supply and full documentation traceability.

Supply support for TLV320ADC3101EVM-K 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 analog and low-power audio solutions.

The TLV320ADC3101EVM-K belongs to TI's modular EVM platform designed specifically for rapid evaluation of audio converters - emphasizing plug-and-play USB integration, Windows software control, and flexible analog/digital signal routing for portable and voice-enabled devices.

FAQ

What is the primary function of the TLV320ADC3101EVM-K?

The TLV320ADC3101EVM-K is an evaluation module that enables hands-on testing and configuration of the TLV320ADC3101 stereo audio ADC. It provides immediate USB connectivity to a Windows PC, onboard microphones and line inputs, I²C register control via TAS1020B, and real-time audio streaming - allowing engineers to validate analog front-end design, digital interface timing, and firmware register sequences without custom hardware.

Does the TLV320ADC3101EVM-K require external power when used with a PC?

No - the TLV320ADC3101EVM-K draws all required power (+3.3VA, +3.3VIO, +1.8VD) from the USB-MODEVM motherboard, which itself is powered via a single USB cable from the host PC. Jumper settings W1–W3 and W8 ensure proper voltage routing to AVDD, IOVDD, and DVDD pins of the TLV320ADC3101, making external supplies unnecessary for standard evaluation use.

How is the TLV320ADC3101EVM-K controlled and configured?

The TLV320ADC3101EVM-K is controlled using the Windows-based ADC3101 Control Software, which communicates over USB to the TAS1020B on the USB-MODEVM. This software provides GUI access to all TLV320ADC3101 registers, including audio input routing, PGA gain, AGC parameters, clock dividers, I²S format, and biquad filter coefficients - with scriptable command-line interface and real-time status flag monitoring.

Can the TLV320ADC3101EVM-K be used with external digital audio interfaces?

Yes - the TLV320ADC3101EVM-K supports external I²S interfaces via J14 on the USB-MODEVM. SW2 jumpers 4 and 5 must be set to OFF to disconnect the TAS1020B's I²S signals and route external BCLK, WCLK, and MCLK instead. Digital signals can then be monitored at J5 on the TLV320ADC3101EVM, enabling integration into non-USB host systems such as MCUs or FPGAs.

What analog input options does the TLV320ADC3101EVM-K support?

The TLV320ADC3101EVM-K supports three analog input configurations: (1) dual onboard electret microphones (MK1/MK2) enabled by jumpers W12/W13; (2) line-level input via 3.5-mm jack J9; and (3) differential or single-ended signals via screw-terminal blocks J6 (IN1L/IN1R), J7 (IN2L/IN2R), and J8 (IN3L/IN3R). Input routing, PGA gain, and biasing are fully software-controllable via the ADC3101 Control Software.