TS4984 Datasheet, PDF (26/29 Pages) STMicroelectronics – 2 x 1W Stereo audio power amplifier with active low standby mode

TS4984
Application Information
4.10 Demoboard
A demoboard for the TS4984 is available.
For more information about this demoboard, please refer to Application Note AN2049, which can be
found on www.st.com.
Figure 70 shows the schematic of the demoboard. Figure 71, Figure 72 and Figure 73 show the
component locations, top layer and bottom layer respectively.
Figure 70: Demoboard schematic
C1
R1
Vcc
GND
Cn1
VCC
Neg. Input L
GND
Cn2
Pos. Input L
GND
Cn3
Jumper J1
Pos. Input R
GND
Cn5
Neg. Input R
GND
Cn6
C2
R2
C3
R3
R4
VCC
Cn8
1
2
3
C8
1u
R7
C4
R5
C5
R6
1 IN-L _-
2 IN+L ₊
12 Standby _Bias
3 Bypass L
10 IN+R ₊
9 IN-R _-
11 Bypass R
C7
1u
C9
100nF
U1
VO-L 16
-
AV = -1
+
VO+L 15
VO-R 8
-
AV = -1
+
VO+R 7
Cn4
Neg. Output L
Pos. Output L
Cn7
Neg. Output R
Pos. Output R
*
C6
R8
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