la72670bm Sanyo Semiconductor Corporation, la72670bm Datasheet - Page 8

• Manufacturer Part Number: la72670bm
• Description: Us Multiplex Modulation For Vcr Hifi Sound Signal Processor
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
No.
Pin
10
25
35
50
70
79
12
74
13
48
14
47
16
8
ALC detection terminal
for RF converter
L-GND
HEADAMP-GND
LOGIC-GND
R-GND
MTS-GND
AUDIO-GND
BS monitor input
terminal(L)
BS monitor input
terminal(R)
Input changeover
switch output(L)
Input changeover
switch output(L)
HiFi input terminal(L)
HiFi input terminal(R)
1/2 V CC terminal
Pin Function Name
DC;
DC ; 2.5V
AC; -21.2dBv
DC ; 2.2V
AC; -21.2dBv
DC ; 2.5V
AC; -21.2dBv
DC; 2.5V
DC voltage
AC level
This is ALC detector terminal for RF
converter and always ready for operation.
BS monitor input terminal
PB/REC switch output to transform REC and
PB signals into DC through a coupling
capacitor.
HiFi input terminal after passing through a
coupling capacitor.
Serially-set reset is made with the external
capacitance C and internal resistance R (15kΩ)
at rise of power supply. The reset time t is
expressed as follows: t = -CRln(0.2)
1/2 V CC terminal.
LA72670BM
Function
500Ω
REC:ON
200Ω
Equivalent circuit
200Ω
Vref
PB:ON
2kΩ
Vref
500Ω
Continued on next page.
REC:ON
400Ω
No.A0644-8/20
PB:ON