HD155121F Datasheet, PDF (50/57 Pages) Hitachi Semiconductor – RF Transceiver IC for GSM and PCN Dual band cellular systems

HD155121F
IQ Modulator and OffsetPLL Typical Performance (cont)
Phase comparator output current (I1, I3) vs.
1.5 ^{VCC and Temperature}
RICURAD = 22kΩ at pin12
0.45
I1
1.2
0.4
I3/I1
0.9
0.35
0.6
0.3
2
I3
Operating voltage range
2.5 3 3.5 4 4.5
V_CC (V)
0.3
0.25
5
I1,I3 Ta=−40°C
I1,I3 Ta=−25°C
I1,I3 Ta=27°C
I1,I3 Ta=85°C
I1,I3 Ta=100°C
I3/I1 Ta=−40°C
I3/I1 Ta=−25°C
I3/I1 Ta=27°C
I3/I1 Ta=85°C
I3/I1 Ta=100°C
OPLL phase detector output current value is controlled by RICURAD(pin12).
Following figure is for determining phase detector output current.
6
IPLLOUT (GSM)
IPLLOUT (PCN)
5
4
3
2
1
0
1
10
100
RICURAD(Pin12) (kΩ)
50