HD155121F Datasheet, PDF (37/57 Pages) Hitachi Semiconductor – RF Transceiver IC for GSM and PCN Dual band cellular systems

HD155121F
PGA and Demodulator Typical Performance
Serial data
26 27 28
6 17 18 38 32
V_CC = 3.0V
fin: 540MHz
−10dBm
15n
4p
36 ^IFLO DIV
MIX2
0,90,180,270
degree
(45MHz)
GMSK modulated wave
Carrier: 45MHz
300Ω
POONRX1 44
POONRX2 45
POONTX 46
IOUT ₂₃
1000p
25 _MIX2O
PGA
1000p
TOKO
24 _{MIX2OB 300Ω}
617DB-1018
Insertion loss = 3.6dB
IQ
Demo.
IOUTB ₂₂
QOUT ₂₁
QOUTB ₂₀
RX mode
10k
10k Measurement
equipment
10k
10k
7 19 37 31 35
Figure 7
Unit: R : Ω
C:F
37