Datasheet

Data brief

For further information contact your local STMicroelectronics sales office.

September 2011 Doc ID 17667 Rev 2 1/4

STEVAL-CCA025V1

Class G capless headphone amplifier

demonstration board based on the TS4621E

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

■ I

C 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

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 I

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 I

C interface.

STEVAL-CCA025V1

www.st.com

PAGE 1
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.
PAGE 2
Schematic diagrams STEVAL-CCA025V1 1 Schematic diagrams Figure 1. Circuit schematics 6CC #N 6CC) # # & 0OWER ! #N 'ND 5 3W 0OSITIVE (P6DD " SUPPLY #N 'ND # & ! )N, " )N, ( ! !6DD # & 'ND ,EVEL DETECTOR # & # N& ,EFT OUTPUT 2 #-3 # # & # & 3$! 3#, 'ND # )N2 $ 3#, ) # #N # N& .
PAGE 3
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.
PAGE 4
STEVAL-CCA025V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.