Philips Semiconductors
DCS/PCS 2 W power amplifier
APPLICATION INFORMATION
Preliminary specification
CGY2021G
handbook, full pagewidth
PA
output
C1(3)
C2(3) C3(3)
TRL1(1)
10 pF
48 47 46 45 44 43 42 41 40 39 38 37
1
VDD3
36
2
35
3
34
4
VDD2 33
5
32
6
7 RFO/VDD4
8
9
CGY2021G
VGG1 31
30
VDD1 29
28
10
RFI 27
11
26
12
25
DETO VGG2
13 14 15 16 17 18 19 20 21 22 23 24
12 pF
12 pF
6
nH
100 Ω
10
pF
22 1
pF nF
VGG
−1.6 V
10
47 Ω
pF 1 nF
100
pF
PA
TRL2 (2) input
82
1.5
Ω
pF
Vcontrol
0.8 to 3 V
39 Ω
180 Ω
BSR14
VDD
PHP109
560 Ω
10 nF
Vdiode
1 kΩ
BAS70
BAS70
1 nF
1 kΩ
1 kΩ
39 pF
MGD772
−90 µA
DC output
Vbat
3.6 V
1.25 V
All capacitors are type: SMD0603.
Thickness: 0.8 mm; substrate: FR4; εr = 4.7.
(1) TRL1: width = 0.3 mm; length = 16 mm.
(2) TRL2: width = 0.5 mm; length = 10 mm.
(3) the component values are:
SYSTEM
DCS
PCS
C1 (pF)
2.2
1.5
C2 (pF)
1.8
1.58
C3 (pF)
2.2
12..22
Fig.3 Evaluation board schematic.
1997 Apr 03
8