CXA3185/3186N
Pin
No.
23
Pin voltage
Symbol
Equivalent circuit
Description
(V)
—
VCC2
—
—
PLL circuit power supply.
PLL circuit GND.
24
GND2
—
VCC1
8
40
25
IFOUT
2.3
IF output.
25
VCC2
22
26
5.0
40k
(Lock)
LOCK detection.
26
LOCK
High when locked, Low when
unlocked.
0.2
(UNLock)
VCC2
22
NPN transistor connection for
varicap diode drive.
27
28
CPE
CPO
0.6
2.0
200
28
27
500
20k
Charge pump output.
Connect a loop filter.
60k
30p
30p
29
Crystal connection for
reference oscillator.
29
30
REFOSC
4.3
—
Power supply for external
supply.
VCC3
—5—