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UPB1008K
PIN FUNCTIONS
Pin No.
Symbol
Function and Application
Internal Equivalent Circuit
3
1
GNDlna
Ground pin of LNA
36
2
2
LNAin
Input pin of low noise amplifier. It is a
V CC
single-ended open collector design.
Capacitive coupling is required; external
matching will improve gain or NF.
Regulator
GND
1
3
VCCrf
Supply voltage pin of LNA, RF mixer and VCO
7
voltage regulator.
r = 410
4
5
GNDlo
1stLO-OSC1
Ground pin of 1st LO Oscillator circuit and RF
Mixer.
Pin 5 & 6 are base pins of the differential
3
r=300
r=300
6
7
1stLO-OSC2
VCClo
amplifier for 1st LO oscillator. These pins
require an LC (varacator) tank circuit to
oscillate at around 1400 MHz.
Supply voltage pin of oscillator circuit for
1st LO Oscillator and RF mixer
6
V CC
Regulator
GND
r=4.4k
idc=941u
r=4.4k
5
4
8
PDout
This is a current mode charge pump output.
9
For connection to a passive RC loop filter for driving
external varactor diode of 1stLO-OSC.
Source Control
ESD
9
VCCdig
Supply voltage pin of digital portion of the chip.
Sink Control
11
ESD
8
10
REFin
Input pin of reference frequency buffer. This pin
9
should be equipped with external 27 MHz
oscillator (e.g. TCXO).
11
GNDdig
Ground pin of digital portion of the chip.
ESD
r=20k
r=20k
idc=9.7u
10
ESD
r=500
11
r=500
idc=22u
c=5.4p
r=30k
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