Texas Instruments TAS5086-5186V6EVM

Overview

TAS5086-5186V6EVM from Texas Instruments is a 5.1-channel PurePath Digital™ evaluation module integrating the TAS5086 32-bit multichannel PWM processor and TAS5186A 6-channel digital amplifier power stage. It supports 32–192 kHz input sample rates, delivers up to 30 W per front/satellite channel into 6 Ω, and >60 W into 3 Ω for subwoofer, with I²S digital audio and I²C control interfaces.

For engineers reviewing the TAS5086-5186V6EVM datasheet, TAS5086-5186V6EVM pinout, TAS5086-5186V6EVM application, or TAS5086-5186V6EVM equivalent, this EVM enables rapid validation of high-fidelity 5.1-channel digital audio amplification in home-theater systems including flat-panel TVs, HTIB, and DVD receivers - with integrated protection, soft-mute, and USB-PC interface capability via TI's companion input board.

Technical Context

The TAS5086-5186V6EVM implements a complete 5.1-channel digital audio amplifier system using two tightly coupled ICs: the TAS5086 performs 32-bit Equibit™ PWM modulation with symmetrical AD conversion and accepts I²S inputs across six channels, while the TAS5186A provides Class-D power output with auto-recovery short-circuit and thermal protection.

System-level interfaces include J60 (I²S data/clock), J40 (I²C control, MUTE, RESET, SD/OTW fault reporting), J901 (dual-rail PSU: 15–20 V system + 0–32 V output-stage), and J101–J106 (six isolated speaker outputs). All protection signals are open-drain and mapped to dedicated pins on J40 for real-time monitoring.

Key Specifications

Availability

TAS5086-5186V6EVM is available at Aetrix Electronics and suitable for home theater reference design, audio subsystem validation, and 5.1-channel amplifier prototyping requiring stable component supply and documented TI evaluation hardware support.

Supply support for TAS5086-5186V6EVM 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 digital signal technologies with over 90 years of innovation in electronics design tools and reference platforms.

The TAS5086-5186V6EVM belongs to TI's PurePath Digital™ audio evaluation platform family, designed specifically to accelerate development of high-efficiency, low-distortion Class-D amplifier systems for consumer home-theater applications.

FAQ

What is the primary function of the TAS5086-5186V6EVM?

The TAS5086-5186V6EVM is a Texas Instruments evaluation module that demonstrates a complete 5.1-channel digital audio amplifier system. It integrates the TAS5086 PWM processor and TAS5186A power stage to enable rapid validation of high-fidelity audio performance, protection behavior, and digital interface interoperability - not a production-ready end product but an engineering development tool for amplifier subsystem design.

Does the TAS5086-5186V6EVM require an external USB interface board to operate?

Yes - the TAS5086-5186V6EVM requires connection to a TI input-USB board (as stated in the User's Guide) to provide digital audio input (S/PDIF optical/coaxial), analog inputs, PC interface, and DAP features like digital volume control and bass management. The module itself lacks onboard USB transceivers or audio digitization circuitry and relies on this companion board for full system functionality.

What protection mechanisms are implemented on the TAS5086-5186V6EVM?

The TAS5086-5186V6EVM implements short-circuit and thermal protection via the TAS5186A power stage, configured in back-end auto-recovery mode. Fault conditions trigger open-drain SD (shutdown) and OTW (over-temperature warning) signals on J40 pins 20 and 22, respectively. These signals follow the decoding table in Section 3.1 and allow external monitoring without interrupting I²C register state during recovery.

Can the TAS5086-5186V6EVM drive 4 Ω speakers?

The TAS5186A power stage on the TAS5086-5186V6EVM is rated for 6 Ω single-ended loads at 30 W per channel and 3 Ω subwoofer loads at >60 W. Driving 4 Ω loads is not specified in the TAS5186A datasheet or TAS5086-5186V6EVM User's Guide. Operating outside the validated 3 Ω / 6 Ω load range may compromise thermal safety margins and invalidate protection thresholds - TI recommends adhering to published load specifications.

What are the critical power-up sequencing requirements for the TAS5086-5186V6EVM?

The TAS5086-5186V6EVM requires strict adherence to the recommended power-up sequence: system supply (15–20 V) must be applied before output-stage supply (0–32 V), and the RESET signal must remain low for ≥200 ms during startup. This sequence is enforced by the onboard reset generator (U908) and ensures proper initialization of both TAS5086 and TAS5186A - violating it risks latch-up, undefined state, or failure to enter operational mode.