TPA2000D2_07 Datasheet, PDF (14/20 Pages) Texas Instruments – 2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

TPA2000D2
SLOS291F – MARCH 2000 – REVISED MARCH 2007
www.ti.com
USING LOW-ESR CAPACITORS
Low-ESR capacitors are recommended throughout this application section. A real (as opposed to ideal)
capacitor can be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this
resistor minimizes the beneficial effects of the capacitor in the circuit. The lower the equivalent value of this
resistance the more the real capacitor behaves like an ideal capacitor.
EVALUATION CIRCUIT
LEFT AUDIO INPUT+
C1
0.1 µF
LEFT AUDIO OUTPUT–
VDD
GAIN SELECT
LEFT AUDIO INPUT–
C2
0.1 µF
RIGHT AUDIO INPUT+
C3
0.1 µF
TO SYSTEM CONTROL
TPA2000D2
PGND
PGND
LOUTN
LOUTP
C17
0.1 µF
C7
220 pF
GAIN0
LPVDD
LINN
AGND
COSC
RINN
BYPASS
LPVDD
20
LINP
VDD
ROSC
RINP
C21
0.1 µF
C20
0.1 µF
RPVDD
RPVDD
10
SHUTDOWN
C19
GAIN1
0.1 µF
C18
ROUTN
ROUTP
0.1 µF
PGND
PGND
C5
1 µF
C6 10 µF
R1
120k
C8
10 µF
LEFT AUDIO OUTPUT+
VDD
VDD
GAIN SELECT
RIGHT AUDIO OUTPUT +
VDD
RIGHT AUDIO INPUT–
C4
0.1 µF
RIGHT AUDIO OUTPUT –
Table 3. TPA2000D2 Application Bill of Materials
REFERENCE
DESCRIPTION
C1-4, C17-21 Capacitor, ceramic chip, 0.1 µF, ±10%, X7R, 50 V
C5
Capacitor, ceramic, 1.0 µF, 80%/-20%, Y5V, 16 V
C6, C8
Capacitor, ceramic, 10 µF, 80%/-20%, Y5V, 16 V
C7
Capacitor, ceramic, 220 pF, ±10%, XICON, 50 V
R1
Resistor, chip, 120 kΩ, 1/10 W, 5%, XICON
U1
IC, TPA2000D2, audio power amplifier, 2-W,
2-channel, class-D
SIZE
0805
0805
1210
0805
0805
24 pin
TSSOP
QUANTITY MANUFACTURER PART NUMBER
9
Kemet
C0805C104K5RAC
1
Murata
GRM40-Y5V105Z16
2
Murata
GRM235-Y5V106Z16
2
Mouser
140-CC501B221K
1
Mouser
260-120K
1
TI
TPA2000D2PWP
14
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