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TPA2000D2 Datasheet(PDF) 5 Page - Texas Instruments

Part No. TPA2000D2
Description  2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPA2000D2 Datasheet(HTML) 5 Page - Texas Instruments

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TYPICAL CHARACTERISTICS
TEST SET-UP FOR GRAPHS
C2
C1
L1
L2
OUT–
OUT+
TPA2000D2
SLOS291F – MARCH 2000 – REVISED MARCH 2007
Table of Graphs
FIGURE
η
Efficiency
vs Output power
2, 3
FFT at 1.5 W output power
vs Frequency
4
vs Output power
5-7
THD+N
Total harmonic distortion plus noise
vs Frequency
8, 9
Crosstalk
vs Frequency
10
Power supply rejection ratio
vs Frequency
11
The THD+N measurements shown do not use an LC output filter, but use a low pass filter with a cutoff
frequency of 20 kHz so the switching frequency does not dominate the measurement. This is done to ensure
that the THD+N measured is just the audible THD+N. The THD+N measurements are shown at the highest gain
for worst case.
The LC output filter used in the efficiency curves (Figure 2 and Figure 3) is shown in Figure 1.
L1 = L2 = 22 µH (DCR = 110 m
Ω,
Part number = SCD0703T-220 M-S,
Manufacturer = GCI)
C1 = C2 = 1 µF
The ferrite filter used in the efficiency curves (Figure 2 and Figure 3) is shown in Figure 1, where L is a ferrite
bead.
L1 = L2 = ferrite bead (part number = 2512067007Y3, manufacturer = Fair-Rite)
C1 = C2 = 1 nF
Figure 1. Class-D Output Filter
5
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