la1225m Sanyo Semiconductor Corporation, la1225m Datasheet - Page 4

• Manufacturer Part Number: la1225m
• Description: Fm If Detector Ic
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
Pin No.
1
2
3
4
5
6
7
Demodulated output
S-meter output
Function
IF input
GND
V CC
DET
Reg
No-Signal Voltage at V CC = 3.0V
voltage (V)
No-signal
1.2
1.2
0.1
3.0
1.5
3.0
0
LA1225M
Equivalent circuit
Input impedance
R IN = 330Ω
Vreg = 1.2V
Open collector output.
The SD sensitivity can be adjusted with an
external resistor connected to this pin.
Output impedance
R OUT = 3kΩ
The detector coil is inserted between pin 7
and pin 5 (V CC ).
Notes
Continued on next page.
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