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Description
Trademarks
1
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 + I2C or SoundwireSM interfaces. Two
PDM inputs are provided for low latency playback or sensor aggregation.
The TAS2770EVM-STEREO 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
•
I2C interface for TAS2770 control
•
Soundwire
2
Specifications
Amplifier power supply (VBAT)
EVM power supply
IO power supply (IOVDD)
Output Power
USB, USB class-audio
3
Software
The TAS2770EVM-STEREO can be easily configured with PurePath ™ Console 3 running the
TAS2770 plug-in.
Please refer to the TAS2770 PurePath Console User's guide for detailed descriptions of the software
features.
NOTE: The evaluation driver currently distributed for use with this EVM will periodically inject a tone
into the data stream. This behavior is intentional for this version of the driver. Legal
procurement of the full release version of this driver is in process which will resolve this
issue. As soon as it is available it will be provided to the end user.
4
Stereo Setup
1. Install PurePath™ Console 3 with the TAS2770EVM-STEREO plug-in
2. Connect the first speaker to J10 on the EVM. Alternatively, J23 and J24 can be used for speaker
connections.
3. Connect a second speaker to J29 on the EVM. Alternatively, J28 and J30 can be used for speaker
connections.
4. Attach a power supply to connector J9. There is also an alternate barrel jack connector (J19) adjacent
to this connector.
5. Set jumper J13 to select the desired I2C address for channel 1.
6. Set jumper J31 to select the desired I2C address for channel 2.
2
TAS2770 Stereo Evaluation Module
SM
interface for TAS2770 control
Table 1. Reference Board Specifications
Copyright © 2017, Texas Instruments Incorporated
4.5 V to 16 V
4.5 V to 16 V
1.65 V to 1.95 V
18.3 W
Micro-USB B
www.ti.com
SLOU497 – October 2017
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