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UPC8191K
PIN FUNCTIONS (Pin Voltage is measured at V CC = 2.85 V)
Applied
Pin
Functions and Applications
Internal Equivalent Circuits
Pin
No.
Pin
Name
Voltage
(V)
Voltage
(V)
1
Qb
VCC/2
-
Q signal input pin.
Apply bias voltage externally.
Maximum balance input voltage is
1 000 mVP-P (balance).
2
3
Q
GND
VCC/2
-
1
2
(Shifter)
0
-
Ground pin of I/Q modulator.
This pin should be grounded with
–––––
minimum inductance.
Form the ground pattern as widely as
possible to minimize ground impedance.
4
5
Tank
0
2.65
External inductor and capacitor can
supress harmonics spurious of LO frequency.
LC value should be determined
according to LO input frequency
4
5
External
and suppression level.
6
LOb
0
2.02
Bypass pin of local signal input for I/Q
modulator.
In the case of single local input,
this pin must be decoupled with capacitor
ex. 1 000 pF.
–
7
LO
0
2.02
Local signal input of I/Q modulator.
The DC cut capacitor ex. 1 000 pF
must be attaced to this pin.
–
8
VCC 2.7 to 3.3
-
Supply voltage pin of I/Q modulator.
(Shifter)
9
VPS
0 to 3.0
-
Power saving pin of I/Q modulator +
AGC amplifier.
This pin modulator can control
Active/Sleep state with bias as follows.
50 k ?
VPS (V)
0 to 0.5
2.2 to 3
State
Sleep Mode
Active Mode
9
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