Pa Circuit - Motorola StarTAC 3000 Service Manual
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Also See for StarTAC 3000:
- Owner's manual (96 pages) ,
- User manual (108 pages) ,
- Manual (10 pages)
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StarTAC 3000 :
This manual is Motorola property. Copying or
distribution strictly prohibited without prior written
consent from Motorola and must be returned upon
Motorola's request.
Motorola Confidential Proprietary
J800
POWER CONTROL
U700-47
45
page B-18
A
REF2.75
SW_REF2.75
R540
Q533
NEG_BIAS
page B-12
836.55MHz
27.2dBm
C568
C567
page B-10
Channel: 385
TX Freq: 836.55MHz
TX Power Level 2
TX SIGNAL
VOLTAGE SUPPLIES
Colored boxes represent the area in
which the components are placed.
B+
J800
POWER CONTROL
U700-47
45
page B-18
PA Circuit
2
3
4
5
Power Level
A
1.38V
1.3V 1.21V
1.2V 1.07V .924V
3.11V 3.23V 3.34V 3.43V 3.49V 3.55V
B
3.14V 2.24V 1.44V 1.02V .68V
C
R520
Q505
836.55MHz
20dBm
R998
Q552
L541
B
Q556
A
6
7
836.55MHz
0dBm
.44V
L599
8
7
6
5
4
3
2
1
U530
Q531
9 10 11 12 13 14 15 16
C559
R516
R515
Q502
Q504
C
S1
TX_VCO
V_OUT_A
-1.6V
8
7
-3V
V_OUTB
-1.39V
9
6
-3V
10
5
2.75V
U520
RESETB
2.75V
11
4
2.75V
RF_SPI_CLK
-3V
12
3
PA_CNTL_ENB
13
2
RF_SPI_DAT
14
1
ALERT_EN
VIB_EN_CHRG_SEL
C519
page B-18
SW_REF_2.75
REF_2.75
page B-12
TX_SF
page B-7
NEG_BIAS
page B-12
REF_2.75
page B-12
J800
45
U601,U800
page B-19
page B-18
4
U800-57
page B-19
6
U700-26
page B-18
2
U800-56
page B-19
28
Q760
page B-16
R770,Q1007
page B-15
page B-14
NEG_BIAS
page B-12
REF_2.75
page B-12
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