Applied Pin Functions and Applications Internal Equivalent Circuits
Pin Pin Voltage Voltage
No. Name (V) (V)
1 Vcont 0 to VCC - Gain control pin of AGC amplifier.
Variable gains are available in accordance
with applied voltage.
2 N.C. - - No connection.
19 This pin is not connected to internal circuit.
This pin should be opened or grounded. —
3 LO - 1.96 Local signal input pin of I/Q demodulator.
Input frequency is 760 MHz.
4 LOb - 1.96 Bypass pin of local signal input for I/Q
demodulator.
In the case of single local input, this pin must be
decoupled with capacitor ex. 100 to 1 000 pF.
5 GND 0 - Ground pin of I/Q demodulator.
6 (Demod.) This pin should be grounded with minimum
inductance.
Form the ground pattern as widely as possible to
minimize ground impeadance.
7 Qb - 1.40 I/Q/Ib/Qb signal output pins.
8 Q - 1.40 Each pin is an emitter follower.
9 Ib - 1.40 Each of Ib and Qb is differential output of I and Q.
10 I - 1.40 Recommendable load impedance is 10 to 20 kΩ.
11 VCC 2.7 to 3.3 - Supply voltage pin of I/Q demodulator —
(Demod.) (phase shifter + I/Q Mixer).
12 TEST 1 0 - TEST pin.
In actual use, this pin should be grounded. —
13 TEST 2 0 -
14 GND 0 - Ground pin of AGC amplifier and —
18 (AGC, internal regulator.
REG.) This pin should be grounded with
minimum inductance.
Form the ground pattern as widely as
possible to minimize ground impedance.
PIN FUNCTIONS (Pin Voltage is measured at VCC = 3.0 V)
UPC8194K
1
54 k 12 k
5 k
V
CC
V
CC
GND
5050
3
4
V
CC
GND
8.5 k
7 8 9 10
