MB15C703 Datasheet, PDF (3/16 Pages) Fujitsu Component Limited. – Built-in IF Band Voltage Controlled Oscillator Mask ROM Frequency Synthesizer

MB15C703
s PIN DESCRIPTIONS
Pin
No.
Symbol
1 VCOGND
2
N.C.
3 VCOCNT
4
VCOPS
5 VCOVDD
6
LD
7
N.C.
8
OSCin
9
fout
10 PLLVDD
11
N.C.
12
N.C.
13
PLLDo
14 PLLGND
15
PLLfin
16
PLLPS
17
N.C.
18 VCOout
19 VCOTNKI
20 VCOTNKO
I/O
Descriptions
 Ground for the VCO.
 No connection.
I
VCO control voltage input.
Connection to PLLDo terminal via LPF.
Power saving control for the VCO. (Open is prohibited.)
I “H”: Normal mode
“L”: Power saving mode

Power supply voltage input for VCO.
Connect to capacitor between GND.
Lock detector signal output.
O LD = “H”: Locking mode or power saving mode
LD = “L”: Unlocking mode.
 No connection.
I
The reference counter input.
Connect with a AC coupling capacitor.
O Test purpose output. This pin is an open drain output.

Power supply voltage input for the PLL.
Connect to capacitor between GND.
 No connection.
 No connection.
O
PLL charge pump output.
Connect to VCOCNT pin via LPF.
 Ground for the PLL.
I
Prescaler input.
Connect with an AC coupling capacitor.
Power saving control for the PLL. (Open is prohibited.)
I “H”: Normal mode
“L”: Power saving mode
 No connection.
O VCO output.
VCO tank circuit input.
I Connect to VCOTNKO pin with inductance-and-resistance.
Connect to capacitor between GND.
VCO tank circuit output.
O Connect to capacitor VCOTNKI with inductance and resistance.
Connect to capacitor between GND. (max.2.0 pF)
3