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TDA7437T Datasheet(PDF) 17 Page - STMicroelectronics

Part # TDA7437T
Description  DIGITALLY CONTROLLED AUDIO PROCESSOR
PDF  23 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7437T Datasheet(HTML) 17 Page - STMicroelectronics

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background image
BWL
TIME
0.5s/DIV
CREF
OUT LF
1
2
V
(1V/div)
D95AU380
Figure 8: Power on Time Constant vs Cref
Capacitor CREF =4.7
µF
BWL
TIME
0.5s/DIV
CREF
OUT LF
1
2
V
(1V/div)
D95AU381
Figure 9: Power on Time Constant vs Cref
Capacitor CREF =10
µF
BWL
TIME
1s/DIV
CREF
OUT LF
1
2
V
(1V)
D95AU382
Figure 10: Power on Time Constant vs Cref Ca-
pacitor CREF =22
µF
10
100
1K
10K
Freq(Hz)
-100
-90
-80
-70
-60
-50
-40
SVRR
(dB)
D95AU383
4.7
µF
47
µF
VS=8V
Ripple=0.2VRMS
AV=-15dB
Figure 11: SVRR vs. Frequency
SOFT MUTE
CH1 9V DC
CH1 0.5V
x ~
CH2 20mV
x ~
CH3 0.2V x =
CH4 20mV x = T/div 1ms
Chan 2
1ms 0.2V
Chan 3
1ms 2V
SOFT MUTE=ON SLOPE=FAST Vout=500mVrms
D95AU384
TIME
Vout
Pin Csm
Main Menu
V
V
10
10
10
10
Figure 12: Soft Mute ON
TDA7437
17/23



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