參數(shù)資料
型號: TDA7491MV
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 20 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36
封裝: ROHS COMPLIANT, SSOP-36
文件頁數(shù): 5/28頁
文件大小: 696K
代理商: TDA7491MV
TDA7491MV
Characterization curves
Doc ID 14576 Rev 2
13/28
Figure 8.
FFT (0 dB)
Figure 9.
FFT (-60 dB)
Figure 10.
Closed-loop gain vs frequency
Frequency (Hz)
FFT (dB)
-150
+10
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
20
20k
50
100
200
500
1k
2k
5k
10k
Specification Limit:
Typical: >60dB
for the harmonic frequency
Test Condition:
Vcc =18V,
RL= 8 ohm,
Rosc =39k
Ω, Cosc =100nF,
f = 1kHz,
Gv =30dB,
Po =1W
Tamb =25
Frequency (Hz)
FFT (dB)
-150
+0
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
20
20k
50
100
200
500
1k
2k
5k
10k
Specification Limit:
Typical: > 90dB
for the harmonic frequency
Test Condition:
Vcc =18V,
RL= 8 ohm,
Rosc =39k
Ω, Cosc =100nF,
f =1kHz,
Gv =30dB,
Po = -60dB (@ 1W =0dB)
Tamb =25
Test Condition :
Vcc = 18V,
RL = 8 ohm,
Rosc =39kO, Cosc =100nF,
0dB@f=1kHz, Po=1w,
Gv=32dB,
Tamb =25
TDA7491MV 8ohm Closed-loop gain vs Freq
.at27
-5
+0.
-4.5
-
-3.
-
-2.
-
-1.
-
-0.
-
d
B
r
A
20
30k
50
100
200
500
1k
2k
5k
10k
20k
Hz
Vcc=18V,
Rload=8ohm,
0dB@f=1kHz, Po=1w,
Gv=32dB
Gain=32dB
Gain=22dB
Gain=26dB
Gain=30dB
5
4
5
3
5
2
5
1
5
0
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