Texas Instruments MIXED SIGNAL PRODUCTS TPA0103 User Manual
Page 22
Using The TPA0103 EVM With the Plug-N-Play Evaluation Platform
3-8
Details
3.3.2
TPA0103 Module Jumper Settings
The TPA0103 EVM is equipped with several jumpers that act like SPST
switches to allow module operation to be modified to suit various
requirements. In the following discussion, setting a jumper to
ON means that
a shunt is installed across the two pins of the jumper. Setting a jumper to
OFF
means that no shunt is installed on the jumper. See Figure 3.5.
In typical applications, some or all of the jumper functions are controlled by the
system microcontroller or external logic.
Note that jumpers S2 through S5 tie various amplifier control input pins directly
to V
DD
. When one of these EVM jumpers is set to ON, the signal on the
associated EVM control input pin will have no effect. In addition, V
DD
appears
on that EVM control input pin. Care should be taken to ensure that
low-impedance paths to ground are not provided through the circuitry that
applies control signals to the EVM control input pins or that external circuits
will not be upset by V
DD
appearing on the EVM control input lines.
Figure 3–5. TPA0103 EVM Jumpers
GND/HS
GND/HS
S2
NC
NC
ROUT+
LOUT+
RLINE IN
LLINE IN
HP/LINE
MUTE OUT
COUT–
COUT+
MODE A
MODE B
GND/HS
GND/HS
RHP IN
LHP IN
RBYPASS
CIN
VDD
VDD
NC
SHUTDOWN
10
9
12
11
6
5
8
7
2
1
4
3
23
22
21
20
19
18
17
16
15
14
13
24
R6
100 k
Ω
R4
20 k
Ω
R3
20 k
Ω
C2
1
µ
F
C1
1
µ
F
R1
20 k
Ω
R2
20 k
Ω
C3
5 pF
VDD
R5
100 k
Ω
C5
2.2
µ
F
S1
COUT+
MODE B
LIN
LINHP
VDD
LOUT+
R10
20 k
Ω
C7
1
µ
F
C9
2.2
µ
F
R9
20 k
Ω
C8
5 pF
C6
1
µ
F
R8
20 k
Ω
S3
LVDD
S4
VDD
ROUT+
RIN
RINHP
VDD
HP/L*
COUT–
MODE A
S5
C10
2.2
µ
F
C11
10
µ
F
R13
200 k
Ω
R15, 20 k
Ω
R18
20 k
Ω
R17
200 k
Ω
C12
5 pF
R16
20 k
Ω
R7
20 k
Ω
R14
200 k
Ω
GND
R11
100 k
Ω
R12, 100 k
Ω
TPA0103