Texas Instruments TAS2770YFF, Руководство пользователя

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Export Control Notice
www.ti.com
2 SLOU500 – December 2017
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Copyright © 2017, Texas Instruments Incorporated
TAS2770YFF Evaluation Module
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 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.
3 Description
The TAS2770YFF 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 through either I2S or TDM + I
2
C or Soundwire
SM
interfaces. Two PDM inputs are provided for
low latency playback or sensor aggregation.
The TAS2770YFF-EVM supports evaluation and development with the TAS2770YFF device through the
following interfaces:
• USB interface
– TAS2770YFF 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 TAS2770YFF control
• Soundwire
SM
interface for TAS2770YFF control
4 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
I/O power supply (IOVDD) 1.65 to 1.95 V
Output power 18.3 W
USB, USB class-audio Micro-USB B
5 Software
The TAS2770YFF EVM can be easily configured with PPC3 running the TAS2770YFF plug-in.
NOTE: The evaluation driver currently distributed for use with this EVM periodically injects a tone
into the data stream. This is intentional behavior for this version of the driver; Texas
Instruments is in the process of legal procurement of the full release version of this driver
that will resolve this issue. As soon as the full-release version is available it will be provided
to the end user.