la72670bm Sanyo Semiconductor Corporation, la72670bm Datasheet - Page 9

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

Continued from preceding page.
No.
Pin
17
18
45
19
44
20
43
21
22
42
41
23
NR waiting DET
terminal(R)
REC mute terminal
NR waiting DET
terminal(L)
NR waiting filter
terminal1(L)
NR waiting filter
terminal1(R)
NR waiting filter
terminal2(L)
NR waiting filter
terminal2(R)
CCA reference
terminal(L)
NR emphasis
terminal(L)
NR emphasis
terminal(R)
CCA reference
terminal(R)
HiFi/Nor selecting
terminal
(2)Monitor control
Pin Function Name
terminal at Pin 34
(EE)
(PB)
DC; Unsettled
DC;
AC;
DC; 2.5V
AC;
DC; 2.5V
AC;
DC ;Nor at 0.1V
AC:
DC voltage
AC level
TRACKING
Pin21
Pin41
;HiFi at
DC
Hi: Pin 26 signal at REC is OFF(Mute).
Terminal for waiting detector.
The recommended external capacity is 10µF.
(Pin 19,Pin 44)between GND;4.7µF
(Pin 20,Pin 43)between GND;0.01µF
By connecting 22µF between Pin 21, Pin 41
and GND, 4700pF between Pin 22, Pin 42
and GND, form the NR emphasis.
In PB mode, Pin 23 becomes
“TRACKING_DC” when inputting HiFi audio
signal and becomes “L” when inputting
Normal signal.
In EE mode, this is used as the terminal for
monitor control of Pin 34.
Two levels control terminal.
Low(0 to 0.8V) ; VCO MIX
Middle(1.4V to 3.6V) ; Lch VCO
High(4.2V to V CC ) ; Rch VCO
LA72670BM
Low ; 0V to 1.5V
Hi ; 3.0V to Vcc
Function
30kΩ
10kΩ
10kΩ
500Ω
5kΩ
500Ω
Equivalent circuit
1kΩ
500Ω
39kΩ
22kΩ
2.4kΩ
Continued on next page.
12kΩ
No.A0644-9/20
5E
Pin19,44
Pin20,43
Pin22,42
Pin21,41