Rf Block Diagram - Motorola StarTAC 3000 Service Manual

Star TAC 3000:
B
Q502
PWR_CNTL
B+
INT
TX FILTER
ANT
J800
C55
47
1&4
5
3
U51
8
EXT
ANT
6 7
45
EXT C51
1
2
CON
U50
RF
LOGIC
CONTROL
J3 2
2
5
4 3
4
6
R51
REF_4.75V
U610
3 1
NEG
NEG_V
REG
J800
DPLY NEG - 4.1V

RF Block Diagram

TX_SF
SW_REF_2.75V
REF_ 2.75V Q531
C B
R538
Q533
NEG_BIAS
B C
Q556
Q502
C PWR_CNTL
4
5
3
6
Q504
2
7
1
8
VVC
FL504
C559
Q552
PA
POWER
DETECT
PWR_DET SW REF 2.75V
CR550
PWR_CONTROL
U520
8 PA_NEG BIAS
9
TX_DR_NEG BIAS
1
SPI_DATA
14 ALERT_ENABLE
SPI_CLK
2
13 VIB_EN_CHRG_SEL
PA_CTL_EN 3
CHRGR_DAC
10
RESET 4
11 REF_2.75V
5 12 NEG_BIAS -3.4V
REF_2.75V
NEG_BIAS -3.4V
6 7
989.64 MHZ
(333)
NEG_BIAS -3.4V
4
U310
TO J970
60
RX DISABLE
17
REF 2.75V
E
B
Q103
FL101
C
FL102
FL100
C
B
Q120
E
RX 879.99 MHz ( Channel 333 )
IF 109.65 MHz ( Channel 333 )
RX VCO 989.64 MHz ( Channel 333 )
TX 834.99 MHz ( Channel 333 )
U530
15
7
834 .99 MHZ
3 RF ATTN
R512
5
10 R513
R514
4
12
13
2
14
1
16
11
9
REF 2.75V 16
HVCC 7, 29, 36
REF 4.75V 3
4
HVCC OUT
D REG 11, 25, 45
A REG 21, 35
RX DISABLE
40
12 RXSF_OUT
9 RX_VCO_SAMPLE
RX TP
LOOP FILTER
VCO
VCO
STEER
RXCP_OUT
5
B
C
Q302
Q301
RX DISABLE
6
DC CONTROL
15
2nd LO CP OUT
219.3 MHZ
12
2nd LO VCO IN
2nd LO VCO
Q101
FL201
C
IF_IN
B E 3
109.65 MHZ
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TX
Q501
CR502
VCO
U502
CR501
TX_SF
27
23
TX CP OUT 31
20
19
13
14
15
ANGUSS
U401
44
40
37
38
39
2.7V P.P.
43
41
1
430 MV P.P. 47
1, 10, 13, 22,
30, 41, 45
21
600 MV P.P.
9
7
LVZIF U201
4
27
17
18
19
Motorola Confidential Proprietary
FM _MOD
TP TX VCO
STEER
Ch. 991 = 1.74V DC
Ch. 333 = 2.21V DC
Ch. 799 = 2.72V DC
B C
Q402 A REG
E
B C
Q401 D REG
E
B+
B+
J800
RESET
RESET 11
RX DISABLE 17
RF_SPI_DATA
2
RF_SPI_CLOCK 4
SYNTH ENABLE 8
38
4.2 MHZ
2.1 MHZ IF CLOCK
REF_AFC
3
Y401
1
16.8 MHZ
4
REF 2.75V
HVCC
FREQ ERROR 25
RSSI 20
33
DEMOD AUDIO
2
RF_SPI_DATA
RF_SPI_CLOCK
4
IF_ENABLE 13