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TPA2000D2 Datasheet(Fiches technique) 5 Page - Texas Instruments

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Numéro de pièce TPA2000D2
Description  2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
Télécharger  17 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
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TPA2000D2
2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER
SLOS291B – MARCH 2000 – REVISED APRIL 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
η
Efficiency
vs Output power
2, 3
In-band output spectrum
vs Frequency
4
THD+N
Total harmonic distortion plus noise
vs Output power
5 – 7
THD+N
Total harmonic distortion plus noise
vs Frequency
8, 9
test set-up for graphs
The THD+N measurements shown do not use an LC output filter, but use a low pass filter with a cut-off 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 3) is shown in Figure 1.
L1 = L2 = 22
µH (DCR = 110 mΩ,
Part Number = SCD0703T–220 M–S,
Manufacturer = GCI)
C1 = C2 = 1
µF
The ferrite filter used in the efficiency curves (Figure 2 and 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
C2
C1
L1
L2
OUT–
OUT+
Figure 1. Class-D Output Filter




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