Details – Texas Instruments TPA005D02 User Manual
Page 18
The TPA005D02 Audio Power Amplifier Evaluation Module
3-4
Details
Figure 3–3. TPA005D02 Class D EVM Schematic Diagram
5
1
µ
F
C7
16
8
41
10
35
34
15
µ
H
0.22
µ
F
V2P5
SHUTDOWN
MUTE
AGND
LINP
LINN
LCOMP
AGND
RINP
RINN
RCOMP
NC
NC
NC
COSC
AGND
AGND
AGND
VCP
LSBIAS
CP4
CP3
CP2
CP1
LPVDD
LPVDD
VDD
PVDD
RPVDD
RPVDD
PVDD
FAULT0
FAULT1
LOUTP
LOUTP
PGND
PGND
LOUTN
LOUTN
ROUTP
ROUTP
PGND
PGND
ROUTN
ROUTN
NC
NC
PGND
PowerPAD
1
2
3
4
6
7
44
45
43
17
19
30
48
47
46
20
22
28
26
23
24
25
29
9
21
40
33
32
42
11
12
13
14
15
39
38
37
36
18
31
27
C26
C24
0.22
µ
F
C22
1
µ
F
L2
15
µ
H
L1
15
µ
H
L3
15
µ
H
L4
0.22
µ
F
C25
C23
1
µ
F
D3
D2
R7
R6
1 K
Ω
1 K
Ω
LOUT+
LOUT–
ROUT+
ROUT–
VDD
C13
C9
1
µ
F
1
µ
F
C17
1
µ
F
10
µ
F
1
µ
F
1
µ
F
C1
1
C15
C16
C12
C14
C10
VDD
220
µ
F
10
µ
F
C18
1
µ
F
C19
1
µ
F
C5
470 pF
C21
0.047
µ
F
0.047
µ
F
C20
1
µ
F
1
µ
F
1
µ
F
C6
C8
C3
C2
470 pF
470 pF
RIN–
RIN+
LIN–
LIN+
GND
MUTE
GND
VDD
VDD
R1
20 K
Ω
R2
1 K
Ω
C1
1
µ
F
VDD
D1
3.9 V
R3
20 K
Ω
S1
R4
100 K
Ω
Q1
2N3906
U1
TPA005D02
R5
100 K
Ω
S2
C4
0.22
µ
F
C27
220
µ
F
+
+
Shutdown
VDD
Mute
3.2.1
TPA005D02 Class D Stereo Audio Amplifier IC
The TPA005D02 Class D Stereo Audio Power Amplifier integrated circuit
converts low-level audio into pulse-width-modulated (PWM) signals, which
result in an audio output with a 24-dB increase in amplitude. Designed
primarily for BTL operation at a supply voltage of 5 V, each channel of the
TPA005D02 amplifier IC is capable of 2 W of continuous output power into a
4-
Ω
load at 0.8% total harmonic distortion + noise (THD+N) over a frequency
range of 20Hz – 20kHz.
The device is provided in a very small 48-pin thermally-enhanced PowerPAD
TSSOP surface-mount package (DCA) and consumes only 400
µ
A in
shutdown mode, making the TPA005D02 an excellent choice for portable
battery-powered applications.