HD155121F Datasheet, PDF (26/57 Pages) Hitachi Semiconductor – RF Transceiver IC for GSM and PCN Dual band cellular systems

HD155121F
Mixer1 Typical Performance
V_CC = 3.0V
1000p
TOKO 617PT-1206, insertion loss ≅ 2.2dB
800Ω : 50Ω
V_CC = 3.0V
Input (GSM_RF)
940MHz: −30dBm
(50Ω)
Input (PCN_RF)
1842MHz: −30dBm
(50Ω)
Input (Lo)
GSM: 1165MHz, −8dBm
PCN: 1617MHz, −8dBm
6 10 17 18 32 38 41 44 45 _*2
2p
Mixer1 ^*1
0.5p
2
42
12n
1000p
1000p
Output (IF)
225MHz
(50Ω)
1
2.5p
43 _220n
1000p
6p
Mixer1
(Q>40)
48
4.7n
1.5p
47
1000p 1000p
39
BAND 35
CLK 26
SDATA 27
LE 28
GSM: "Low"
PCN: "High"
Gain1: X7 = 0 for High gain
Gain2: X7 = 1 for Low gain
other bit is no care
47
7 46 31 37 40
Unit: R : Ω
C:F
Note: 1. Mixer1 is open collector type.
2. Please tune this LC resonant circuit to get the maximum conversion gain at 225MHz.
Figure 5
Item
Mode Min
Typ
Max
Input (RF) Z
GSM —
50
—
PCN —
50
—
Differential output load
—
—
800
—
between pin42 and pin43
Output (IF) Z
—
—
50
—
Input (LO) Z
—
—
50
—
Input (RF) VSWR
GSM —
—
2
PCN —
—
2
Input (LO) VSWR
GSM —
—
2
PCN —
—
4
Note: 1. These values are not tested in mass production.
Unit Test Condition
Ω
RF = 940MHz
Ω
RF = 1842MHz
Ω
IF = 225MHz
Note
1
1
Ω
IF = 225MHz
1
Ω
LO = 1165, 1617MHz 1
RF = 940MHz
1
RF = 1842MHz
LO = 1150 to 1185MHz 1
LO = 1580 to 1655MHz
26