UPB1003GS NEC, UPB1003GS Datasheet - Page 7

• Manufacturer Part Number: UPB1003GS
• Description: REFERENCE FREQUENCY 16.368 MHz/ 2ND IF FREQUENCY 4.092 MHz RF/IF FREQUENCY DOWN-CONVERTER PLL FREQUENCY SYNTHESIZER IC FOR GPS RECEIVER
• Manufacturer: NEC

PIN EXPLANATION
Pin
No.
35
36
10
11
12
1
2
3
4
5
6
7
8
9
RX-MIXout
V
RF-MIXin
GND (RF-MIX)
V
(1stLO-OSC)
1stLO-OSC1
1stLO-OSC2
GND
(1stLO-OSC)
V
detector)
N.C.
PD-Vout3
PD-Vout2
PD-Vout1
GND (phase
detector)
CC
CC
CC
Pin Name
(RF-MIX)
(phase
2.7 to 3.3
2.7 to 3.3
2.7 to 3.3
Pull-up
with
resistor
Pull-up
with
resistor
Voltage
Applied
(V)
0
0
0
Output in
accordance
with phase
difference
Voltage
1.68
1.20
1.88
1.88
Pin
(V)
Preliminary Data Sheet P14016EJ1V0DS00
Output pin of RF mixer.
1st IF filter must be inserted
between pin 33 & 35.
Supply voltage pin of RF mixer
block. This pin must be
decoupled with capacitor
(example: 1 000 pF).
Input pin of RF mixer.
1 575.42 MHz band pass filter
can be inserted between pin 1
and external LNA.
Ground pin RF mixer.
Supply voltage pin of differential
amplifier for 1st LO oscillator
circuit.
Pin 4 & 5 are each base pin of
differential amplifier for 1st LO
oscillator. These pins should be
equipped with LC and varactor
to oscillate on 1 636.80 MHz as
VCO.
Ground pin of differential
amplifier for 1st LO oscillator
circuit.
Supply voltage pin of phase
detector and active loop filter.
Non connection
Pins of active loop filter for
tuning voltage output.
The active transistors
configured with darlington pair
are built on chip. Pin 11 should
be pulled down with external
resistor. Pin 9 to 10 should be
equipped with external RC in
order to adjust dumping factor
and cutoff frequency. This
tuning voltage output must be
connected to varactor diode of
1st LO-OSC.
Ground pin of phase detector +
active loop filter.
Function and Application
1stLO
-OSC
36
12
4
6
1
3
7
PD
Internal Equivalent Circuit
V
CC
5
PB1005K
RF-MIX or
Prescaler
input
11
35
10
2
9
7