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STEVAL-CCA025V1
Class G capless headphone amplifier
demonstration board based on the TS4621E
Data brief
Features
■
Power supply range: 2.3 V to 4.8 V
■
0.6 mA/channel quiescent current
■
2.1 mA current consumption with 100
µW/channel (10 dB crest factor)
■
0.006% typical THD+N at 1 kHz
■
100 dB typical PSRR at 217 Hz
■
Zero pop and click
■
I2C interface for volume control
■
Digital volume control range: -60 dB to +4 dB
■
100 dB of SNR A-weighted at G = 0 dB
■
Independent right and left channel enable
control
■
Integrated high-efficiency buck converter
■
Low standby current: 5 µA max
■
No output coupling capacitors (thanks to the
internal negative supply)
■
Thermal shutdown and short-circuit protection
■
RoHS compliant
STEVAL-CCA025V1
Description
The STEVAL-CCA025V1 demonstration board is
designed to aid in the evaluation of the TS4621E
audio differential input stereo headphone
amplifier. The TS4621E device is soldered on a
four-layer PCB. An on-board RS-232 to I2C
interface renders the board easy to control from a
personal computer through a serial port.
The software provided with the board controls all
features of the TS4621E, such as gain, mode,
mute, standby and register status.
You can also use the connectors on the
demonstration board to directly control the
features through another I2C interface.
September 2011
Doc ID 17667 Rev 2
For further information contact your local STMicroelectronics sales office.
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www.st.com
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Schematic diagrams
STEVAL-CCA025V1
1
Schematic diagrams
Figure 1.
Circuit schematics
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2/4
Doc ID 17667 Rev 2
STEVAL-CCA025V1
2
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
Changes
23-Jun-2010
1
Initial release.
22-Sep-2011
2
The device under evaluation has been changed.
Updated Figure 1: Circuit schematics.
Doc ID 17667 Rev 2
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STEVAL-CCA025V1
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Doc ID 17667 Rev 2
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