Flat-Panel TVs and Displays
LCD TVs, Multifunction Monitors and Plasma-Display TVs
20-W Mono Digital Amplifier
TPA3200D1
Get samples, datasheets and evaluation modules at:
25
10-W Stereo Class-D Audio Amplifiers
TPA3008D2, TPA3005D2
Get samples, datasheets, evaluation modules and app reports at:
or
The TPA3200D1 is a 20-W (per channel), efficient, digital audio power
amplifier for driving a bridge-tied speaker. The TPA3200D1 can drive a
speaker with an impedance as low as 4
Ω.
The high efficiency of the
TPA3200D1 (85%) eliminates the need for an external heat sink.
Key Features
• Efficient Class-D operation
• I
2
S input, 20 W x 1 output
• Supports up to 24-bit I
2
S and 16-bit right-justified digital input formats
• Four integrated gain settings
• Thermal and short-circuit protection
Applications
• LCD TV
• DLP TV
• Plasma TV
• Pachinko
3x Digital Amps
I
2
S Audio
The TPA3008D2 and TPA3005D2 are analog-input Class-D audio power
amplifiers that drive 10 W stereo and 6 W stereo, respectively, into
speakers without a heat sink or large output filter components. The
TPA3008D2 features an auto recovery that restarts the device after a
short-circuit condition is removed.
Key Features
• TPA3008D2: 10 W stereo into 16
Ω
from 17 V at 10% THD+N
• TPA3005D2: 6 W stereo into 8
Ω
from 12 V at 10% THD+N
• Filter-free modulation
•
Filter not required for efficiency or audio quality, but a low-cost
ferrite bead will reduce EMI
•
Improved efficiency: 92% maximum
•
Improved SNR: 97 dB
• Integrated gain settings
• Auto recovery (TPA3008D2)
• Stereo TPA3000D amplifiers pin compatible
Applications
• LCD TVs 17” to 23”
TPA3200D1
TPA3200D1
TPA3200D1
12 VDC
Left
Audio
Processor
Right
PVCC 10
µF
220 nF
0.1
µF
0.1
µF
10
µF
PVCC
220 nF
Subwoofer
BSRN
PVCCR
PVCCR
ROUTN
ROUTN
PGNDR
PGNDR
ROUTP
ROUTP
PVCCR
PVCCR
BSRP
1
µF
AVCC
AC/DC
Adapter
12 to 14
VDC
LM317
12-V
Linear Regulator
Shutdown/Mute
Control
Right
Differential
Inputs
Left
Differential
Inputs
0.47
µF
0.47
µF
0.47
µF
0.47
µF
0.47
µF
TPA3200D1 typical application.
Gain
Control
BSLN
PVCCL
PVCCL
LOUTN
LOUTN
PGNDL
PGNDL
LOUTP
LOUTP
PVCCL
PVCCL
BSLP
SHUTDOWN
RINN
RINP
V2P5
LINP
LINN
AVDDREF
NC
GAIN0
GAIN1
FAULT
NC
VCLAMPR
NC
NC
AVCC
TPA3008D2
NC
NC
AGND
AVDD
COSC
ROSC
AGND
VCLAMPL
0.1
µF
1
µF
220 pF
120 kΩ
10
µF
1
µF
0.1
µF
10
µF
0.1
µF
10
µF
220 nF
PVCC
220 nF
PVCC
*
*
Optional output filter
for EMI suppression
TPA3008D2 typical application circuit.
Texas Instruments 1Q 2006
Audio Solutions Guide
➔