TPA3121D2_16 Datasheet, PDF (2/32 Pages) Texas Instruments – 15-W STEREO CLASS-D AUDIO POWER AMPLIFIER

TPA3121D2
SLOS537B – MAY 2008 – REVISED JANUARY 2014
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
PWP (TSSOP) PACKAGE
(TOP VIEW)
PVCCL
1
24
SD
2
23
PVCCL
3
22
MUTE
4
21
LIN
5
20
RIN
6
19
BYPASS
7
18
AGND
8
17
AGND
9
16
PVCCR
10
15
VCLAMP
11
14
PVCCR
12
13
PGNDL
PGNDL
LOUT
BSL
AVCC
AVCC
GAIN0
GAIN1
BSR
ROUT
PGNDR
PGNDR
TERMINAL
NAME
24-PIN
(PWP)
SD
2
RIN
6
LIN
5
GAIN0
18
GAIN1
17
MUTE
4
BSL
PVCCL
LOUT
PGNDL
VCLAMP
BSR
ROUT
PGNDR
PVCCR
AGND
AGND
21
1, 3
22
23, 24
11
16
15
13, 14
10, 12
9
8
BYPASS
7
AVCC
19, 20
Thermal pad
Die pad
Table 1. TERMINAL FUNCTIONS
I/O/P
DESCRIPTION
I
Shutdown signal for IC (low = disabled, high = operational). TTL logic levels with compliance to
AVCC
I Audio input for right channel
I Audio input for left channel
I Gain select least-significant bit. TTL logic levels with compliance to AVCC
I Gain select most-significant bit. TTL logic levels with compliance to AVCC
I
Mute signal for quick disable/enable of outputs (high = outputs switch at 50% duty cycle, low =
outputs enabled). TTL logic levels with compliance to AVCC
I/O Bootstrap I/O for left channel
P Power supply for left-channel H-bridge, not internally connected to PVCCR or AVCC
O Class-D ½-H-bridge positive output for left channel
P Power ground for left-channel H-bridge
P Internally generated voltage supply for bootstrap capacitors
I/O Bootstrap I/O for right channel
O Class-D ½-H-bridge negative output for right channel
P Power ground for right-channel H-bridge.
P Power supply for right-channel H-bridge, not connected to PVCCL or AVCC
P Analog ground for digital/analog cells in core
P Analog ground for analog cells in core
O
Reference for preamplifier inputs. Nominally equal to AVCC/8. Also controls start-up time via
external capacitor sizing.
P High-voltage analog power supply. Not internally connected to PVCCR or PVCCL
P
Connect to ground. Thermal pad should be soldered down on all applications to secure the
device properly to the printed wiring board.
2
Submit Documentation Feedback
Product Folder Links: TPA3121D2
Copyright © 2008–2014, Texas Instruments Incorporated