2 W stereo audio power amplifier based on the TS4982
Features
■ 2 W output power into 4 Ω load per channel
■ 125 mW into 16 Ω load ground-referenced
stereo headphone driver
■ Four-step gain settings on speaker path
■ 3 levels of 3D effect on speaker path
■ PC-beep input system detection
■ ±8 kV HBM ESD-protected headphone outputs
■ Pop and click reduction circuitry
■ 32-pin 5 x 5 mm QFN package
■ Thermal shutdown and output short-circuit
protection
■ RoHS compliant
STEVAL-CCA019V1
Data brief
STEVAL-CCA019V1
AM05060v1
Description
The STEVAL-CCA019V1 is a demonstration
board designed to help in the characterization of
the TS4982, which features a stereo loudspeaker
driver and a ground-referenced stereo
headphones driver. An independent standby
mode pin allows the TS4982 to simultaneously
drive both output drivers.
Operating on a single 5 V supply, the TS4982
delivers 2 W (typ.) output power into a 4 Ω load at
1% THD+N.
The TS4982 features a PC beep input, three
levels of 3D stereo enhancement and 4-step gain
control using two digital input pins.
A minimum number of external components
makes the TS4982 well suited for notebook and
other hand-held sound equipment. It also has an
internal thermal shutdown (150° C) and output
short-circuit protection mechanism. The TS2012
is available in a 4x4 mm QFN20 package.
July 2009 Doc ID 16074 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Schematic diagram STEVAL-CCA019V1
1 Schematic diagram
Figure 1. Circuit schematic
JP3
VCC
J1
N.A.
JP5
1
2
LHPin
J2
N.A.
JP6
1
2
RHPin
VCC
JP8
1
2
3
HDEN
J3
N.A.
JP10
1
2
LSPKin
J4
N.A.
JP12
1
2
RSPKin
JP13
VCC
1
2
3
SPKREN
JP14
1
2
PCBEEPin
VCC
JP4
1
2
3
G0
JP2G1VCC
1
2
3
C1
330nF
C2
330nF
HDEN
SPKREN
C3
330nF
C4
330nF
R1
C6
47k
330nF
1
2
3
3D1
VCC
JP1
1
2
3
3D0
VCC
C13
1uF
30
1
27
HLIN
26
HRIN
22
HDEN
3
LLIN
2
LRIN
23
SPKREN
4
BEEP
31
G0
32
G1
24
BYP
C14
1uF
C17
1uF
29
3D0
3D1
VCC
TS4982
CPVCC
GND
9
28
HPVCC
CP-
CP+10CPGND
11
12
HPVCCVCC
VCC VCC
C7C8
100nF
CPVSS
13
C5
1uF
JP18
2
1
C10 C11
Fn001.A.N
N.A.
PGND PGNDPGNDPGND
8
18
U1
20
ROUT+
19
ROUT-
PVCCL
PVCCR
6
LOUT+
7
LOUT-
17
HPVCC
16
LHP
15
RHP
R3
10kR210k
PGNDR
PVSS
PGNDL
5
21
14
C15
1uF
HPVCC
HDEN
SPKREN
JP16
1
2
JP19
JP20
J10
N.A.
J12
N.A.
HPVCC
C16
1uF
VCC
2
1
R4
100k
1
2
VCC
J5
N.A.
JP7
1
2
RSPKout
J6
N.A.
J7
N.A.
JP9
1
2
LSPKout
J8
N.A.
J16
N.A.
J14
N.A.
JP11
1
2
HPout
J15
N.A.
J17
N.A.
J9
N.A.
J11
N.A.
JP15
1
2
Vcc
J13
N.A.
2/4 Doc ID 16074 Rev 1
Comment: N.A. ... Not Assembled
AM05059V1
AM05060v1
STEVAL-CCA019V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
23-Jul-2009 1 Initial release.
Doc ID 16074 Rev 1 3/4
STEVAL-CCA019V1
y
y
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4/4 Doc ID 16074 Rev 1
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