CXA3117N
Pin Description
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
V
CC
Description
1
OSC IN
1.4V
1
15k
72
2
300
15k
Connects the external parts of crystal
oscillator circuit.
A capacitor and crystal oscillator are
connected to these pins and V
CC
.
2
OSC OUT
0.7V
GND
V
CC
1.5k
3
3
MIX OUT
1.3V
Mixer output.
Connect a 455kHz ceramic filter
between this pin and IF IN.
GND
4
V
CC
V
CC
1.5k
20k
20k
1.5k
Power supply.
5
IF IN
1.4V
5
IF limiter amplifier input.
GND
V
CC
6
TH CONT
—
6
25k
GND
V
CC
Determines the level comparator
threshold value.
Threshold value can be adjusted by
inserting the resistor between Pin 6 and
V
CC
.
Normally, short to V
CC
.
7
FSK REF
0.2V
72
7
Connects the capacitor that determines
the low cut-off frequency for the entire
system.
GND
–2–
SONY [ SONY CORPORATION ]
