Motorola Astro XTL 1500 - Figure 7-126.HUF4017 A Receiver Front-End Schematic (Sheet 2 of 2)

Schematics, Component Location Diagrams, and Parts Lists: HUF4017A (700-800 MHz) Main Board 7-165
6815854H01-A June 15, 2005
Figure 7-126. HUF4017A Receiver Front-End Schematic (Sheet 2 of 2)
7.7V
RX Receive
700 MHz
TP6256, 58, 60, 62
LNA Output
TP6255, 57, 59, 61
3V
MIXER_RF_IN
Test points 800 MHz
RX Receive
7.7V
RX switching voltages
TP6254
MIXER_IF_OUT
4.3V
0V
2.3V
TP6250
1
TP6261
1
1K
R6275
D6256
.01uF
C6257
7.5nH
L6258
D6257
VN_B6258
.01uF
C6255
2
GND2 GND4
4
5
IF
LO
3
RF
1
C6276
.01uF
MA4EX951H-1225
U6251
IF6256
22nH
L6261
TP6259
C6250
.01uF
.01uF
1
VN_B6253
VN_B6255
C6277
TP6262
1uH
L6257
1
TP6252
3.9pF
C6288
22nH
C6264
L6251
0.1uF
C6289
0.1uF
1.5K
R6278
200
R6272
R6270
1K
IF6250
TP6251
1
200
R6269
B6253
MD365
GND
3
IN
2
OUT
1
C6256
C6281
.01uF
.01uF
C6295
1000pF
C6284
.01uF
C6285
.01uF
TP6260
1
D6254
C6268
.01uF
C6274
.01uF
0
*R6279*
.01uF
C6266
47pF
C6272
200
R6268
C6251
.01uF
1K
R6267
22nH
L6260
C6297
9.1pF
R6280
1.5K
R6281
5.1
R6271
1K
L6255
1uH
GND2
3
RF_IN
6
RF_OUT
1
VBC
10pF
C6271
AM50_0011
U6250
2
GND0
4
GND1
5
68nH
L6252
D6255
.01uF
C6258
R6273
200
C6280
.01uF
L6250
22nH
.01uF
GND
2
IN
1
OUT
C6261
03S10
B6252
3
9.3V_TO_IF
9.3V_TO_IF
9.3V_TO_IF
IF_OUT_IF
6
1
2
3
4
5
MAEPF-27840-O
Part Series
6200-2