Data Brief
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January 2008 Rev 1 1/4
4
STEVAL-CCA003V1
Low-voltage stereo audio power amplifier based on the TS4984
Features
■Operates from VCC=2.2 V to 5.5 V
■1 W output power per channel @ VCC=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
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Circuit schematic STEVAL-CCA003V1
2/4
1 Circuit schematic
Figure 1. Schematic
1
2
12
14
5
16
15
Bias
3
AV = -1
Bypass L
Standby
VCC1
+
-
+
-
AV = -1
GND1
+
-
+
-
10
9
8
7
11
Bypass R
GND2 VCC2
613
VO-L
VO+L
VO-R
VO+R
IN-L
IN+L
IN+R
IN-R
U1
*
VCC
Cn1
+
C7
1u C9
100nF
Vcc
GN D
1
2
3
Cn8
VCC
Cn4
Cn7
R2
R3
C2
C3
Cn2
Cn3
Neg. Input L
GN D
Pos. Input L
GN D
Jumper J1
R6
R5
C5
C4
Cn6
Cn5
Neg. Input R
GN D
Pos. Input R
GN D
C1
R1
C6
R8
R4
R7
+
C8
1u
Neg . Outp ut L
Pos. Output L
Neg . Outp ut R
Pos. Output R
STEVAL-CCA003V1 Revision history
3/4
2 Revision history
Table 1. Document revision history
Date Revision Changes
28-Jan-2008 1 Initial release.
STEVAL-CCA003V1
4/4
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