NJM2537
■ TERMINAL FUNCTION
PIN NO. SYMBOL PIN VOLTAGE (V)
FUNCTION
1
OSC IN
Local Oscillator Input.
In case of using a crystal
1.38
oscillator, it is connected.
2
OSC OUT
20
MIX IN
Local Oscillator Output.
In case of using an external
0,68
oscillator, the external clock is
input.
Mixer input.
Input resistance is 5kΩ typical.
0.8
3
MIX OUT
Mixer output.
Output resistance is 2kΩ
typical.
0.7
5
IF IN
6
DEC
8
QUAD IN
Limiter amplifier input.
1.38
Input resistance is 2kΩ typical.
Decoupling for bias.
1.38
Input of quadrature detection
circuit.
A ceramic discriminator is
connected.
1.4
9
AF OUT
Demodulated signal Output.
0.16
EQUIVALENT CIRCUIT
-4-
Ver.2003-12-09