Continued from preceding page.
Pin No. Function
AGC
9
Voltage output
Mono-stable
10 multi-vibrator
3
D/A
11
converter
Mono-stable
12 multi-vibrator
2
Weak signal
13
comparator
Strong signal
14
comparator
LA1061M
External circuits
Unit (resistance : Ω, capacitance : F)
Notes
The LA1061M counts antenna
switches for the time interval
generated by multi-vibrator 2.
The internal D/A converter
outputs a current on pin 11,
which is converted to a voltage
by the resistor connected to
this pin. If this voltage exceeds
a certain value, that is, the
switching frequency is too
high , multi-vibrator 3 operates
to hold the antenna switching
outputs at Main for the time set
by multi-vibrator 3.
The threshold level is set at
approximately 2V.
The threshold level is set at
approximately 1V.
No.3044-6/8