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TPA3122D2 Datasheet Preview

TPA3122D2 Datasheet

15-W STEREO CLASS-D AUDIO POWER AMPLIFIER

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www.ti.com
TPA3122D2
SLOS527A – DECEMBER 2007 – REVISED DECEMBER 2007
15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
FEATURES
1
10-W/ch into an 4-Load From a 17-V Supply
15-W/ch into an 8-Load From a 28-V Supply
Operates from 10 V to 30 V
Efficient Class-D Operation
Four Selectable, Fixed Gain Settings
Internal Oscillator (No External Components
Required)
Single Ended Analog Inputs
Thermal and Short-Circuit Protection with
Auto Recovery Feature
20-pin DIP Package
APPLICATIONS
Televisions
DESCRIPTION
The TPA3122D2 is a 15-W (per channel) efficient,
Class-D audio power amplifier for driving stereo
single ended speakers or mono bridge tied load. The
TPA3122D2 can drive stereo speakers as low as 4.
The efficiency of the TPA3122D2 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, and
36 dB.
SIMPLIFIED APPLICATION CIRCUIT
Left Channel
Right Channel
1 mF
1 mF
TPA3122D2
0.22 mF
LIN
BSR
22 mH 470 mF
RIN
ROUT
PGNDR
0.68 mF
1 mF
BYPASS
AGND
PGNDL
LOUT
BSL
0.68 mF
22 mH
0.22 mF
470 mF
10 V to 30 V
AVCC
PVCCL
PVCCR
10 V to 30 V
Shutdown
Control
Mute Control
SD
MUTE
VCLAMP
1 mF
GAIN0
GAIN1
} 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.
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




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TPA3122D2 Datasheet Preview

TPA3122D2 Datasheet

15-W STEREO CLASS-D AUDIO POWER AMPLIFIER

No Preview Available !

TPA3122D2
SLOS527A – DECEMBER 2007 – REVISED DECEMBER 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.
TERMINAL
NAME
20-PIN
(DIP)
SD
2
RIN
5
LIN
4
GAIN0
15
GAIN1
14
MUTE
3
BSL
18
PVCCL
1
LOUT
19
PGNDL
20
VCLAMP
9
BSR
13
ROUT
12
PGNDR
11
PVCCR
10
AGND
8
AGND
7
BYPASS
6
AVCC
16, 17
N (DIP) PACKAGE
(TOP VIEW)
PVCCL 1
SD 2
MUTE 3
LIN 4
RIN 5
BYPASS 6
AGND 7
AGND 8
VCLAMP 9
PVCCR 10
20 PGNDL
19 LOUT
18 BSL
17 AVCC
16 AVCC
15 GAIN0
14 GAIN1
13 BSR
12 ROUT
11 PGNDR
TERMINAL FUNCTIONS
I/O
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.
Power supply for left channel H-bridge, not internally connected to PVCCR or AVCC.
O Class-D -H-bridge positive output for left channel.
Power ground for left channel H-bridge.
Internally generated voltage supply for bootstrap capacitors.
I/O Bootstrap I/O for right channel.
O Class-D -H-bridge negative output for right channel.
Power ground for right channel H-bridge.
Power supply for right channel H-bridge, not connected to PVCCL or AVCC.
Analog ground for digital/analog cells in core.
Analog Ground for analog cells in core.
O
Reference for pre-amplifier inputs. Nominally equal to AVCC/8. Also controls start-up time via
external capacitor sizing.
High-voltage analog power supply. Not internally connected to PVCCR or PVCCL
2
Submit Documentation Feedback
Product Folder Link(s) :TPA3122D2
Copyright © 2007, Texas Instruments Incorporated


Part Number TPA3122D2
Description 15-W STEREO CLASS-D AUDIO POWER AMPLIFIER
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