Pin
Symbol
No.
21 IF-LOin
Supply
Voltage
(V)
–
Pin
Voltage (V)
@3 V
Description
1.3
IF input pin for the Pre-Mixer.
This pin is biased internally.
Capacitor should be connected in
series, and grounded through 51 Ω.
µPC8126K
Equivalent Circuit
21
24
GND
0
(Pre-Mix)
25 RF-LOin
–
–
Ground pin for Pre-Mixer.
Connect to the ground with minimum
inductance.
Track length should be kept as short
as possible.
2.3
RF input pin for the Pre-Mixer.
This pin is biased internally.
Capacitor should be connected in
series, and grounded through 51 Ω.
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25
26
VCC1
2.7 to 3.6
–
(Pre-Mix)
27 Pre-Mixout 2.7 to 3.6
–
Supply voltage pin for the Pre-Mixer.
An internal regulator helps keep the
device stable against temperature or
VCC variation.
Output from the Pre-Mixer. This pin
is designed as open collector. Due
to the high impedance output, this
pin should be externally equipped
with LC matching circuit to next
stage.
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27
28
GND
0
(Modulator)
1, 3,
N.C.
–
5, 8,
15,
18,
22, 23
–
Ground pin for the modulator.
Connect to the ground with minimum
inductance.
Track length should be kept as short
as possible.
–
Non connection pins.
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10
Preliminary Data Sheet P13488EJ1V0DS00