UPC8126K NEC, UPC8126K Datasheet - Page 8

• Manufacturer Part Number: UPC8126K
• Description: 900 MHz BAND DIRECT QUADRATURE MODULATOR IC FOR DIGITAL MOBILE COMMUNICATION SYSTEMS
• Manufacturer: NEC

PIN EXPLANATIONS
8
No.
Pin
10
11
2
4
6
7
9
Note Relations between amplitude and V
(Modulator)
(Modulator)
Symbol
LOinb
LOin
V
GND
V
CC
Ib
PS
I
2
1
2.7 to 3.6
Supply
Voltage
V
V
V
(V)
CC
CC
–
–
0
PS
/2
/2
Pin
Voltage (V)
@3 V
2.6
2.6
–
–
–
–
–
Bypass of LO input for modulator.
This pin should be externally
grounded through around 33 pF
capacitor.
LO input for the phase shifter.
Connect around 300
4 and 5 to match to 50
Supply voltage pin for the phase
shifter and IQ Mixer. An internal
regulator helps keep the device
stable against temperature or V
variation.
Power save control pin for the
modulator can control On/Sleep
state with bias as follows.
Ground pin for the modulator.
Connect to the ground with minimum
inductance.
Track length should be kept as short
as possible.
Input for I signal.
This input impedance is 180 k .
In case of that I/Q input signals are
single ended, amplitude of the signal
is 500 mV
Input for I signal.
This input impedance is 180 k .
In case of that I/Q input signals are
single ended, V
signal should be input.
In case of that I/Q input signals are
differential, amplitude of the signal is
250 m V
Preliminary Data Sheet P13488EJ1V0DS00
2.2 to 3.6
0 to 0.5
V
PS
CC
(V)
/2 bias of input signal are following.
P-P
P-P
max.
Description
max.
ON (Active Mode)
OFF (Sleep Mode)
CC
/2 biased DC
State
between pin
by LC.
CC
Note
Note
4
10
7
Equivalent Circuit
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PC8126K
2
11