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TPA3120D2 Datasheet Preview

TPA3120D2 Datasheet

25-W STEREO CLASS-D AUDIO POWER AMPLIFIER

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www.ti.com
TPA3120D2
SLOS507E – MARCH 2007 – REVISED SEPTEMBER 2007
25-W STEREO CLASS-D AUDIO POWER AMPLIFIER
FEATURES
1
2 25-W/ch into a 4-Load from a 27-V Supply
20-W/ch into a 4-Load from a 24-V Supply
Operates from 10 V to 30 V
Efficient Class-D Operation Eliminates Need
for Heat Sinks
Four Selectable, Fixed-Gain Settings
Internal Oscillator (No External Components
Required)
Single-Ended Analog Inputs
Thermal and Short-Circuit Protection With
Auto Recovery
Space-Saving Surface-Mount 24-Pin TSSOP
Package
TPA3120D2
APPLICATIONS
Televisions
DESCRIPTION
The TPA3120D2 is a 25-W (per channel) efficient,
Class-D audio power amplifier for driving stereo
speakers in a single-ended configuration or a mono
bridge-tied speaker. The TPA3120D2 can drive
stereo speakers as low as 4 . The efficiency of the
TPA3120D2 eliminates the need for an external heat
sink when playing music.
The gain of the amplifier is controlled by two gain
select pins. The gain selections are 20, 26, 32,
36 dB.
The patented start-up and shut-down sequences
minimize pop noise in the speakers without additional
circuitry.
SIMPLIFIED APPLICATION CIRCUIT
Left Channel
Right Channel
1 mF
1 mF
1 mF
TPA3120D2
0.22 mF
LIN
BSR
22 mH 470 mF
RIN
ROUT
PGNDR
0.68 mF
PGNDL
0.68 mF
BYPASS
AGND
LOUT
BSL
22 mH
0.22 mF
470 mF
10 V to 30 V
Shutdown
Control
Mute Control
AVCC
SD
MUTE
PVCCL
PVCCR
VCLAMP
1 mF
GAIN0
GAIN1
10 V to 30 V
} 4-Step Gain
Control
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated




etcTI

TPA3120D2 Datasheet Preview

TPA3120D2 Datasheet

25-W STEREO CLASS-D AUDIO POWER AMPLIFIER

No Preview Available !

TPA3120D2
SLOS507E – MARCH 2007 – REVISED SEPTEMBER 2007
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 1/2-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 1/2-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 Link(s): TPA3120D2
Copyright © 2007, Texas Instruments Incorporated


Part Number TPA3120D2
Description 25-W STEREO CLASS-D AUDIO POWER AMPLIFIER
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