HD155121F Datasheet, PDF (41/57 Pages) Hitachi Semiconductor – RF Transceiver IC for GSM and PCN Dual band cellular systems

HD155121F
IQ Modulator and OffsetPLL Typical Performance (cont)
Tx spectrum vs. Temperature
GSM mode (902MHz)
100
Carrier suppression ratio
Side-band suppression ratio
80
Tx spectrum vs. Temperature
PCN mode (1747MHz)
100
Carrier suppression ratio
Side-band suppression ratio
80
60
60
40
40
20
Operating voltage range
0
−60 −40 −20 0 20 40 60 80 100 120
Temperature (°C)
20
Operating voltage range
0
−60 −40 −20 0 20 40 60 80 100 120
Temperature (°C)
Tx spectrum vs. V_CC
GSM mode (902MHz)
100
Carrier suppression ratio
Side-band suppression ratio
80
60
40
20
Operating voltage range
0
2
2.5
3
3.5
4
4.5
V_CC (V)
Tx spectrum vs. V_CC
PCN mode (1747MHz)
100
Carrier suppression ratio
Side-band suppression ratio
80
60
40
20
Operating voltage range
0
2
2.5
3
3.5
4
4.5
V_CC (V)
41