Digital amplification

Texas Instruments has introduced a six-channel digital amplifier power stage in a single package. The TAS5186 amplifier offers five 30W channels and one 60W channel, providing more than 200W in a single integrated device.

Texas Instruments has introduced a six-channel digital amplifier power stage in a single package. The TAS5186 amplifier offers five 30W channels and one 60W channel, providing more than 200 W in a single integrated device.

The TAS5186 introduces a new system precharge feature that eliminates pops and clicks experienced on power up. It also supports TI’s two-stage over-current detector, which manages over-currents, avoiding unnecessary shut downs and protecting against short circuit conditions.

This feature allows the power stage to drive real world speakers with minimum audible artifacts during high power peaks in the audio source, while still protecting the power stage from high current conditions.

A companion TAS5086 chip is a digital audio PWM processor operating at 3.3V. Providing a 100+dB dynamic range, the device offers bass management, as well as signal routing capabilities, allowing designers to route any input channel to any output channel, easing the PCB trace routing.

The TAS5086 is packaged in a 38-pin TSSOP package and priced at $1.59 each in quantities of one thousand units, while the TAS5186 is packaged in a 44-pin HTSSOP package and priced at $5.12 each in similar quantities.

Currently sampling, both devices are expected to be in volume production in Q1 2005.

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