UPC8126K NEC, UPC8126K Datasheet - Page 9

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

No.
Pin
12
13
14
16
17
19
20
Note Relations between amplitude and V
(Modulator)
(Modulator)
(Pre-Mix)
MODout
Symbol
GND
GND
V
V
Qb
Q
CC
PS
3
2
2.7 to 3.6
Supply
Voltage
V
V
V
(V)
CC
CC
0
–
0
PS
/2
/2
Pin
Voltage (V)
@3 V
1.6
–
–
–
–
–
–
Input for Q 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 mV
Input for Q 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
Ground pin for the modulator.
Connect to the ground with minimum
inductance.
Track length should be kept as short
as possible.
Supply voltage pin for the output
buffer amplifier of modulator.
An internal regulator helps keep the
device stable against temperature or
V
Output pin from the modulator.
This is emitter follower output.
So this output impedance is low.
Ground pin for the modulator.
Connect to the ground with minimum
inductance.
Track length should be kept as short
as possible.
Power save control pin can control
the On/Sleep state with bias as
follows.
CC
Preliminary Data Sheet P13488EJ1V0DS00
2.2 to 3.6
0 to 0.5
V
variation.
PS
CC
(V)
P-P
/2 bias of input signal are following.
P-P
max.
Description
max.
ON (Active Mode)
OFF (Sleep Mode)
CC
/2 biased DC
State
Note
Note
12
20
Equivalent Circuit
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PC8126K
13
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