UPC8104 NEC, UPC8104 Datasheet - Page 16

• Manufacturer Part Number: UPC8104
• Description: UP CONVERTER + QUADRATURE MODULATOR IC FOR DIGITAL MOBILE COMMUNICATION SYSTEMS
• Manufacturer: NEC

TEST BOARD
16
Lo1
I
10 000 pF
in
V
CC (MOD)
1 000 pF
P.S.
10 000 pF
1 000 pF
(OPEN)
1 000 pF
10 K
I
100 pF
10 000 pF
10 000 pF
V
CC (Up Con.)
1 000 pF
10 000 pF
100 pF
Q
100 nH
100 pF
1 000 pF
Data Sheet P10099EJ4V0DS00
3 pF
100 pF
3 pF
RF
Lo2
Q
in
out
In case of this test board,
the output signal from MOD.
is directly connected to the
up converter input port through
1000 pF, which is DC coupling.
We recommend to insert
a low pass filter between
MOD output and up converter
input port to reject
harmonics of the Lo1 signal
and to avoid saturation
of the up converter.
GND
f
f
f
RF
Lo2
Lo1
= 1.9 GHz
= 1.66 GHz
= 240 MHz
PC8104GR