Texas Instruments TAS5105EVM, Руководство пользователя

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User's Guide
SLLU138 – January 2011
TAS5105EVM for the TAS5105 Digital Amplifier Power
Output Stage
This user's guide describes the operation of the TAS5105 evaluation module (EVM) from Texas
Instruments.
1 Related Documentation from Texas Instruments
Table 1 contains a list of data sheets that have detailed descriptions of the integrated circuits used in the
design of the MC016 Modulator/Controller Module which accompanies the TAS5105EVM as well as the
link to the TAS5105 data sheet. These documents can be obtained from the Texas Instruments Web site
at
http://www.ti.com .
Table 1. Related Documentation From Texas
Instruments
Part Number Literature Number
TAS5012 SLES006
TAS5105 SLES258
UA78M12CKTPR SLVS059
TPS40200D SLUS659
TPS3825-33DBVT SLVS165
2 Overview
The TAS5105EVM package is composed of two separate modules, the MC016 Modulator/Controller
Module and the TAS5105EVM Amplifier Module. They are designed so that the user can separate the two
modules and connect the TAS5105EVM Amplifier Module into a target system via a ribbon cable. Keep
this ribbon cable as short as possible to avoid degradation in the PWM signals.
The TAS5105 customer evaluation amplifier modules each demonstrate two audio integrated circuits —
the TAS5012 and the TAS5105 from Texas Instruments (TI).
The TAS5012 is a high-performance, 32-bit (24-bit input), multichannel PurePath Digital™ pulse width
modulator (PWM) based on Equibit™ technology with fully symmetrical AD modulation scheme. It accepts
an input sample rate from 32 kHz to 192 kHz.
The TAS5105 is a compact, high-power, digital amplifier power stage designed to drive an 8- Ω
loudspeaker up to 20 W/channel at 10% THD+N. It contains integrated gate-drive, four matched and
electrically isolated enhancement-mode N-channel power DMOS transistors, and protection/fault-reporting
circuitry. The DAD package has a PowerPAD™ package on the top side for heat transfer through a heat
sink. The heat sink in this design is for evaluation purposes only.
The TAS5105 EVM and the MC016 form a complete two-channel, digital audio amplifier system which
includes digital input (S/PDIF) and DAP (digital audio processor) features like digital volume control, bass
management, and input and output multiplexers.
This EVM is designed to illustrate a low-cost approach to an amplifier design using this device.
PurePath Digital, Equibit, PowerPAD are trademarks of Texas Instruments.
5 SLLU138 – January 2011 TAS5105EVM for the TAS5105 Digital Amplifier Power Output Stage
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