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TPA2000D4 Datasheet(PDF) 6 Page - Texas Instruments

Part No. TPA2000D4
Description  STEREO 2-W CLASS-D AUDIO POWER AMPLIFIER WITH STEREO HP AMPLIFIER
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

TPA2000D4 Datasheet(HTML) 6 Page - Texas Instruments

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TPA2000D4
STEREO 2W CLASSD AUDIO POWER AMPLIFIER
WITH STEREO HP AMPLIFIER
SLOS337B − DECEMBER 2000 − REVISED NOVEMBER 2005
6
WWW.TI.COM
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
Efficiency
vs Output power
2, 3
FFT at 1.5-W Output Power
vs Frequency
4
Supply current
vs Free-air temperature
5
Total harmonic distortion + noise
vs Frequency
6, 7
Total harmonic distortion + noise
vs Output power
8, 9
Class-D gain and phase
vs Frequency
10
Class-D crosstalk
vs Frequency
11
Power dissipation
vs Output power
12
FFT at 1.5-W output power
vs Frequency
13
Supply voltage rejection ratio
vs Frequency
14
Headphone total harmonic distortion + noise
vs Frequency
15, 16, 22
Headphone total harmonic distortion + noise
vs Output power
17
Headphone closed-loop gain and phase
vs Frequency
18
Headphone open-loop gain and phase
vs Frequency
19
Headphone crosstalk
vs Frequency
20, 24
Headphone supply voltage rejection ratio
vs Frequency
21
Headphone total harmonic distortion + noise
vs Output voltage
23
Headphone supply current
vs Output voltage
25
Headphone supply current
vs Output power
26
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 Figure 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 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
C2
C1
L1
L2
OUT−
OUT+
Figure 1. Class-D Output Filter


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