Demo Board Schematic for PA Only
Vdd
C13
C14
14
DCS/PCS RFin
18
Agilent
Vdd
20
C2
21
C3
23
C4
24
C5
EGSM RFin
Vdd
26
1
C7
4
7
C8
ACPM-7891
YYWW
C9
EGSM RFout
11
C11
DCS/PCS RFout
Component
Label
C2
C3
C4
C5
C7
C8
C9
C11
C13
C14
Component
Value
.033
µF
12 pF
220 pF
.033
µF
220 pF
33 pF
.033
µF
33 pF
.033
µF
27 pF
Vdd
Pin Description Table
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Function
Gnd
Vapc EGSM
Gnd
Vdd3 EGSM
Gnd
Gnd
RFout EGSM
Gnd
Gnd
Gnd
RFout DCS/PCS
Gnd
Gnd
Vdd3 DCS/PCS
Gnd
Vapc DCS/PCS
Gnd
RFin DCS/PCS
Gnd
Vdd1,2 DCS/PCS
Vdd1,2 Bypass
Gnd
Vdd1,2 Bypass
Vdd1,2 EGSM
Gnd
RFin EGSM
Description
EGSM Control Voltage
EGSM Supply 3
rd
stage
Notes
See datasheet Figure 4
3.5V nominal – output stage, bypass with 0.033
µF//220
pF
[1]
EGSM Output
50Ω nominal, external d.c. blocking required – 33 pF
DCS/PCS Output
50Ω nominal, external d.c. blocking required – 33 pF
DCS/PCS Supply 3
rd
stage
DCS/PCS Control voltage
DCS/PCS Input
DCS/PCS Supply 1
st
and 2
nd
stages
DCS/PCS 1
st
and 2
nd
stage bypassing
EGSM 1
st
and 2
nd
stage bypassing
EGSM Supply 1
st
and 2
nd
stages
EGSM Input
3.5V nominal – output stage, bypass with 0.033
µF//27
pF
[1]
See datasheet Figure 5 (DCS) and Figure 6 (PCS)
+2 dBm GMSK, 50Ω nominal, internally d.c. blocked
3.5V nominal – driver stages, bypass with 0.033
µF
bypass with 12 pF
bypass with 220 pF
3.5V nominal – driver stages, bypass with 0.033
µF
+2 dBm GMSK, 50Ω nominal, internally d.c. blocked
Note:
1. In addition a 2.2
µF
capacitor should be connected to pins 4 and 14 or alternatively star connections can be made from a single 2.2
µF
capacitor keeping
the connection distances as short as possible.
9
HP [ AGILENT(HEWLETT-PACKARD) ]
