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EN 56
8.
Q549.3E LA
8.6
Diagram
SSB: Audio
Block Diagram
Shutdown
Control
Pin Configuration
NAME
SD
RIN
LIN
GAIN0
GAIN1
MUTE
BSL
PVCCL
LOUT
PGNDL
VCLAMP
BSR
ROUT
PGNDR
PVCCR
AGND
AGND
BYPASS
AVCC
Thermal pad
2009-Aug-07
IC Data Sheets
B10A, TPA3123D (IC 7D10)
1 F
LIN
RIN
1 F
1 F
BYPASS
AGND
AVCC
SD
MUTE
PVCCL
SD
PVCCL
MUTE
LIN
RIN
BYPASS
AGND
AGND
PVCCR
VCLAMP
PVCCR
TERMINAL
I/O/P
24-PIN
(PWP)
Shutdown signal for IC (low = disabled, high = operational). TTL logic levels with compliance to
2
I
AVCC
6
I
Audio input for right channel
5
I
Audio input for left channel
18
I
Gain select least-significant bit. TTL logic levels with compliance to AVCC
17
I
Gain select most-significant bit. TTL logic levels with compliance to AVCC
Mute signal for quick disable/enable of outputs (high = outputs switch at 50% duty cycle, low =
4
I
outputs enabled). TTL logic levels with compliance to AVCC
21
I/O
Bootstrap I/O for left channel
1, 3
P
Power supply for left-channel H-bridge, not internally connected to PVCCR or AVCC
22
O
Class-D 1/2-H-bridge positive output for left channel
23, 24
P
Power ground for left-channel H-bridge
11
P
Internally generated voltage supply for bootstrap capacitors
16
I/O
Bootstrap I/O for right channel
15
O
Class-D 1/2-H-bridge negative output for right channel
13, 14
P
Power ground for right-channel H-bridge.
10, 12
P
Power supply for right-channel H-bridge, not connected to PVCCL or AVCC
9
P
Analog ground for digital/analog cells in core
8
P
Analog ground for analog cells in core
Reference for preamplifier inputs. Nominally equal to AVCC/8. Also controls start-up time via
7
O
external capacitor sizing.
19, 20
P
High-voltage analog power supply. Not internally connected to PVCCR or PVCCL
Connect to ground. Thermal pad should be soldered down on all applications to properly
Die pad
P
secure device to printed wiring board.
Figure 8-6 Internal block diagram and pin configuration
0.22 F
BSR
22 H
ROUT
0.68 F
PGNDR
0.68 F
PGNDL
LOUT
22 H
BSL
0.22 F
PVCCL
PVCCR
VCLAMP
1 F
GAIN0
GAIN1
1
24
PGNDL
2
23
PGNDL
3
22
LOUT
4
21
BSL
5
20
AVCC
6
19
AVCC
7
18
GAIN0
8
17
GAIN1
9
16
BSR
10
15
ROUT
PGNDR
11
14
PGNDR
12
13
DESCRIPTION
470 F
470 F
}
Control
18440_302_090303.eps
090303
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