ST CCA003V1 User Manual
STEVAL-CCA003V1
Low-voltage stereo audio power amplifier based on the TS4984
Features
Data Brief
■ Operates from V
■ 1 W output power per channel @ V
=2.2 V to 5.5 V
CC
CC
=5 V,
THD+N=1%, RL= 8 Ω
■ 10 nA standby current
■ 62 dB PSRR @ 217 Hz with grounded inputs
■ High SNR: 100 dB (A-weighted filter) typ.
■ Near-zero pop and click
■ Available in the QFN16 4x4 mm, 0.5 mm pitch,
lead-free package
Description
This evaluation board is designed for the TS4984
stereo audio power amplifier. The micro-package
QFN16 (quad, flat, non-leaded, 16-pin) combines
space-saving with good thermal dissipation. The
BTL gain is set at 2 V for both channels and can
be adapted if necessary with a modification of R1/
R8 or R2/R6 values for the left/right channels. The
R3/R6 and C3/C5 component locations are empty
on the board to allow changes to both input
configurations from single-ended to differential.
For use in differential mode, R4/R7 must be
modified. The C1/C6 component locations are
also left empty so that, if required, a low-pass filter
can be added.
STEVAL-CCA003V1
January 2008 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic STEVAL-CCA003V1
1 Circuit schematic
Figure 1. Schematic
C1
R1
Neg. Input L
GND
Pos. Input L
GND
Pos. Input R
GND
Neg. Input R
GND
Cn2
Cn3
Jumpe r J1
Cn5
Cn6
Vcc
GND
Cn1
C2
R2
C3
R3
VCC
Cn8
1
2
3
C4
C5
R4
+
C8
1u
R7
R5
R6
1
2
12
3
10
9
11
IN-L
IN+L
Standby
Bypa ss L
IN+R
IN-R
Bypa ss R
VCC
+
C7
C9
1u
100nF
14
13
U1
VCC1
-
VO-L
16
+
Bias
-
AV = -1
VO+L
15
Cn4
Neg . Outp ut L
Pos. Output L
+
+
VO-R
8
-
-
AV = -1
VO+R
7
Cn7
Neg . Outp ut R
Pos. Output R
+
C6
R8
2/4
GND1
GND2 VCC2
5
6
*
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