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T-91/91L
CIRCUIT DESCRIPTION
IC3: LM7001
(X05-3410-10)
PLL frequency synthesizer
Block diagram
syc
Phase
Detector
Charge
Pump
XIN
o
Reference
Divider
il
XOUT
o
J
ie
:
FMIN
o
| >o
ose
/\
Programable
Divider
lie
wobe
:
el
i
AMIN
o
>
16
ves
Shift
Register
Latch
o
PD1
o PD2
Terminal description
Pin name
Function
XOUT
Crystal oscillator (7.2 MHz).
Data input.
Clock for controller (400 kHz).
Band data output.
BO1
can be used as a time base output
(8 Hz)
Local oscillator signal input
Power supply.
VDD2
for back-up.
Charge pump output
Power supply.
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