參數(shù)資料
型號(hào): TPA2000D4GQC
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA32
封裝: PLASTIC, BGA-32
文件頁(yè)數(shù): 24/27頁(yè)
文件大?。?/td> 456K
代理商: TPA2000D4GQC
TPA2000D4
STEREO 2-W CLASS-D AUDIO POWER AMPLIFIER
WITH STEREO HP AMPLIFIER
SLOS337 – DECEMBER 2000
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
Efficiency
vs Output power
2, 3
In-band output spectrum
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, 23
Headphone total harmonic distortion + noise
vs Output power
17
Closed-loop gain and phase
vs Frequency
18
Open-loop gain and phase
vs Frequency
19
Headphone crosstalk
vs Frequency
20, 25
Headphone integrated noise floor
vs Frequency
21
Headphone supply voltage rejection ratio
vs Frequency
22
Headphone total harmonic distortion + noise
vs Output voltage
24
Headphone supply current
vs Output voltage
26
Headphone supply current
vs Output power
27
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
H (DCR = 110 m,
Part Number = SCD0703T–220 M–S,
Manufacturer = GCI)
C1 = C2 = 1
F
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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