Figure 8-44. Nle4278A Uhf Range 1 Transmitter Power Amplifier And Automatic Level Control Circuit - Motorola ASTRO XTS 5000 Detailed Service Manual

8-68
V3D
RAWB+
TXB+
V5A
V3D
TXINH
TXRF
SPCK
ADCS
MOSI
RSTL
USEL

Figure 8-44. NLE4278A UHF Range 1 Transmitter Power Amplifier and Automatic Level Control Circuit

July 21, 2004
V3D
V5A TXB+ RAWB+
MUN5111T1
Q101
10K
10K
MUN5111T1
Q103
10K
RXH
10K
TX7V RAWB+
C104
C102
.01uF .01uF
BLM11A601S
BLM11A601S
L104
L103
C106 C107
L105
16 6
RFIN
RFOUT1
1 7 15.0nH
VCNTRL
100pF RFOUT2 100pF
14 2
VD1
VG1
3
11 C110
G2
VG2
5.6pF
U102
30C65
L109 8
NC1
15.0nH
9
NC2
C113 10
NC3
15 C114 C115
NC4
.01uF .01uF
100pF
C116
NOT PLACED
Vgate
RXH
1 1
TP111 TP101
TX7V
R111
470K C121
33pF
E105
TP104 C122
BK1005HM471
1000pF
1
R115
Q108
BCW60B
1K
C125 D104
.01uF
2
3 C123 C124
NC
1000pF .033uF
1
MMBD7000
TXB+ TXB+ TX7V V5A
R101
100K
MUN5212T1 MGSF1P02LT1 MGSF1P02LT1
Q104
Q106 Q102
22K
RAWB+
22K
88Z01
E101
C136 L101 C101
1uF 59.71nH 0.1uF
C139
L110
6.8pF
11.20nH
6
C137
C111
*Q107*
15pF 27pF
C108
C109
2
12pF 43pF
1 3 4 5 7 8
L106 L107
12nH 3.3nH
R105 L108
R126 R127
delete,. 47
20K 10K
R106 C117
10K 100pF V3D
C126
.01uF
V5A
2 4
1
C138
3
U106
5
LMC7101BIM5X
.01uF
1
U103
1
2
LM50 VOUT TP103
3
TXB+
TXB+
R117
10
1 24
RFIN VAR3
2 23
NC T1 RX
3 22
CI NA NC
4 21
INT RS
U104
5 20
CJ H99S4 VAR1 NC
6 19
1
5185765B26
VL VLIM TP119
7 18
CL VAR2
8 17
GND1 V5EXT
C133
.01uF
NC
TXB+
var2 R131 10K
var2 R132 10K
C128 C130
C127 C131
2200pF 2200pF 1uF 0.1uF
Schematics, Board Overlays, and Parts Lists: Transceiver (RF) Boards
TX5V
R118 R119
100 100
U101
33C23
B1 B2
PORTB1 PORTB2
C103
PORT1 PORT2 2
1
POUT
100pF
A2 A1
PORTA2 PORTA1
C112
9.1pF
R120 R121
100 100
D101
FWD K2 A1
R128 NC NC2 NC1 NC
R103
C118 R107 A2 K1 R109
10K
100pF 4.7K 100 220
R129
D102
delete,.
RVS K2 A1 1
6
5 2
NC NC2 NC1 NC
4 3
C119 R108 A2 K1 R110 R104
220
100pF 4.7K 100
MBD330DWT1
V3D
5
C120
.01uF
SPCK
3
CLK_IO
ADCS 16 1
CS DATA_OUT MISO
MOSI 15
REFPOS
V3D 14 4
REFNEG EOC NC VAR3
2
DATD_IN DAC1
R114 100K 13
FS DAC2
R113 100K 12
INV_CLK
R112 100K 10
CSTART
FWD 6
A0
U105
RVS 7
A1 TLV1544I
Vtmp 8
A2
9
NC A3
11
63B81097C47-O
6881094C31-D