CXA1852N
Pin Description
Pin
Symbol
No.
Typical
pin voltage (V)
1 LOCAL IN
0
Equivalent circuit
1
2
Description
Local input pin. The internal resistor
provides 50 Ω matching.
2 LOCAL IN
∗2.0
Bias pin for the local input amplifier.
Ground this pin via a capacitor.
3 GND
0
4 Q-BIAS
∗0.175
5 Q-BIAS
∗0.175
5
6 GND
0
7 Q-INPU
∗1.85 V to
0.85 V
7
8
∗1.85 V to
8 Q-INPUT
0.85 V
9 GND
0
Local leak level adjustment pins.
Normally ground these pins via 1 kΩ
resistors.
4
Q signal input pin. The input
impedance is 500 kΩ or more.
(Only DC signals can be normally
input at the VCC/2 DC Bias.)
Q signal input pin. The input
impedance is 500kΩ or more.
(Signals of up to 1 Vp-p can be input
at the VCC/2 DC Bias.)
10 IF OUTPUT
∗1.4
IF output pin. (An output impedance
of 50 Ω is provided by the emitter
10
follower.)
—2—