Texas Instruments TAS2770, Руководство пользователя

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Export Control Notice
www.ti.com
2 SLOU495 – December 2017
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Copyright © 2017, Texas Instruments Incorporated
TAS2770 Evaluation Module
ECCN: 3E991
Trademarks
PurePath is a trademark of Texas Instruments.
Microsoft, Windows are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
1 Export Control Notice
Recipient agrees to not knowingly export or re-export, directly or indirectly, any product or technical data
(as defined by the U.S., EU, and other Export Administration Regulations) including software, or any
controlled product restricted by other applicable national regulations, received from disclosing party under
nondisclosure obligations (if any), or any direct product of such technology, to any destination to which
such export or re-export is restricted or prohibited by U.S. or other applicable laws, without obtaining prior
authorization from U.S. Department of Commerce and other competent Government authorities to the
extent required by those laws.
2 Description
The TAS2770 is a mono digital input Class-D audio amplifier optimized for efficiently driving high peak
power into small loudspeakers. The Class-D amplifier is capable of delivering 18.3 W of peak power into a
4-
Ω load while sustaining 1% THD+N at a battery voltage of 13.8 V. Integrated speaker voltage and
current sense provides for real time monitoring of loudspeaker behavior. Up to eight devices can share a
common bus via either I2S, TDM + I
2
C or Soundwire
SM
interfaces. Two PDM inputs are provided for low
latency playback or sensor aggregation.
The TAS2770EVM supports evaluation and development with the TAS2770 device through the following
interfaces:
• USB interface
– TAS2770 control through PurePath™ Console 3 (PPC3) GUI, USB-HID
– USB-class audio device, compatible with Microsoft
®
Windows
®
7+
• Digital audio AP and PSIA interface through 100-mil headers
• I
2
C interface for TAS2770 control
• Soundwire
SM
interface for TAS2770 control
3 Specifications
Table 1 lists the reference board specifications.
Table 1. Reference Board Specifications
Amplifier power supply (VBAT) 4.5 to 16 V
EVM power supply 4.5 to 16 V
IO power supply (IOVDD) 1.65 to 1.95 V
Output power 18.3 W
USB, USB class-audio Micro-USB B
4 Software
The TAS2770 EVM is easily configured with PurePath Console 3 running the TAS2770 plug-in.
NOTE: The evaluation driver currently distributed for use with this EVM will periodically inject a tone
into the data stream. This is intentional behavior for this version of the driver. We are in the
process of legal procurement of the full release version of this driver which will resolve this
issue. Once available, it will be provided to the end user.