26
Flat-Panel TVs and Displays
LCD TVs, Multifunction Monitors and Plasma-Display TVs
12-W Stereo Class-D Audio Amplifiers
TPA3004D2, TPA3002D2
Get samples, datasheets, evaluation modules and app reports at:
or
➔
Stereo Headphone Amplifier
TPA6110A2
Get samples, datasheets, evaluation modules and app reports at:
The TPA6110A2 is a stereo headphone driver designed to connect
directly to the TPA3004D2 or TPA3002D2 with minimal external
components. The integrated depop circuitry nulls “pops” and “clicks”
during startup and shutdown transitions.
Key Features
• 150 mW stereo into 16
Ω
from 4.5 V with < 0.1% THD+N
• Full short-circuit and thermal protection
• Excellent depop circuitry
• Low supply current: 1.5 mA from 5 V
Applications
• Large screen multifunction monitors and LCD TVs
• Portable DVD players
VCC
ROUT+
The TPA3004D2 and TPA3002D2 are analog-input Class-D audio power
amplifiers that will drive 12 W stereo and 9 W stereo, respectively, into
8-Ω speakers without a heat sink or large output filter components.
Integrated DC volume control and pre-outs for stereo headphone drive
make these two amplifiers extremely versatile.
Key Features
• TPA3004D2: 12 W stereo into 8
Ω
from 15 V at 10% THD+N
• TPA3002D2: 9 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
•
Improved SNR: 102 dB (TPA3004D2)
• Full short-circuit and thermal protection
• DC volume control
• Power and audio pre-outs for stereo headphone amp
• Stereo TPA3000D amplifiers pin compatible
Applications
• Large screen multifunction monitors and LCD TVs
10 nF
C18
ROUT
VCC
C22
1 nF
L1
L2
(Bead) (Bead)
GND
C23
1 nF
*
10
µF
C15
0.1µF
C9
PGND
10 nF
0.1µF
C19
C10
AVDD
R3
120 kΩ
R
OUT
2 1 kΩ
C7
1
µF
CIN1
AVCC
C13
0.1
µF
C16
10
µF
1
µF
CIN2
AVDD C14
100 nF
220 pF R1
120 kΩ
C8
1
µF
C6
C
OUT
2
R
OUT
1 1 kΩ
Rhps1
10 kΩ
CVCC
0.47µF
Rhps2
10 kΩ
(T3)
TPA6110A2
BYP IN1
GND Vo1
SD VDD
IN2 Vo2
Rhpf2
10 kΩ
10
µF
C
OUT
1 220
µF
Rhpf1
10 kΩ
220µF
SHUTDOWN
RIN
C2
C1
1
µF
C5
C3
1
µF
C4
1
µF
1
µF
1
µF
AGND
LIN
T7
P2
50 kΩ
P3
50 kΩ
T6
50 kΩ
P1
T5
GND
AGND
SD
RINN
RINP
V2P5
LINP
LINN
AVDDREF
VREF
VARDIFF
VARMAX
VOLUME
REFGND
BSRP
PVCCR
PVCCR
ROUTP
ROUTP
PGNDR
PGNDR
ROUTN
ROUTN
PVCCR
PVCCR
BSRN
TPA3004D2
VCLAMPR
MODE_OUT
MODE
AVCC
VAROUTR
VAROUTL
FADE
AVDD
COSC
ROSC
AGND
VCLAMPL
(T4)
AVDD
1
µF
BSLP
PVCCL
PVCCL
LOUTP
LOUTP
PGNDL
PGNDL
LOUTN
LOUTN
PVCCL
PVCCL
BSLN
C20
10 nF
C11
0.1µF
C17
10
µF
C12
0.1µF
PGND
C21
10 nF
L3
(Bead)
L4
(Bead)
C24
1 nF
C25
1 nF
PGND
Stereo Class-D speaker driver
with stereo headphone driver
featuring TPA3004D2 and TPA6110A2.
*
Schottky diodes only needed
for short circuit protection
when V
CC
> 15 V.
LOUT
VCC
GND
VCC
LOUT+
Audio Solutions Guide
Texas Instruments 1Q 2006