STV0042 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV0042' PDF : 24 Pages View PDF
STV0042A
AUDIO SWITCHING
AUDIO
K1a
K5b
DEEMPHASIS
+ ANRS
AUDIO PLL
K5c
AUX IN
K1c
K5a
K2
K3
a
ON No ANRS, No De-emphasis
b1
ON No ANRS, 50µs
b2
ON No ANRS, 75µs
a
OFF ANRS, No De-emphasis
b1
OFF ANRS, 50µs
b2
OFF ANRS, 75µs
VOL OUT AUX OUT
FM DEMODULATION BLOCK DIAGRAM
FM IN
AGC
AGC R
AMPLK R
SW1
Phase
Detect
LEVEL
DETECTOR 1 Bias
LEVEL
DETECTOR 2
Amp. Detect
VREF
Reg8 b4
WATCHDOG
AGC
AGC L
AMPLK L
SW3
Phase
Detect
LEVEL
DETECTOR 1 Bias
LEVEL
DETECTOR 2
Amp. Detect
VREF
Reg8 b0
WATCHDOG
FM dev.
Select.
VREF
DET R
AUDIO R
CPUMP R
90
VCO
0
SYNTHESIZER
AUDIO L
SW2
SW4
DET L
FM dev.
Select.
VREF
90
VCO
0
CPUMP L
STV0042A
7/24
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