Motorola CP040 - Page 326

3-16 UHF2 PCB 8486348Z13-C Schematic Diagrams
7.5 V
0 V (Tx)
5 V (Rx)
0 V (Tx)
0 V (Rx)
5 V (Tx)
3.3 V (Rx)
0 V (Tx)
0 V (Rx)
3.3 V (Tx)
7.5 V (ON)
0 V (OFF)
3.3 V
3.3 V
3.0 V
0 V (ON)
7.5 V (OFF)
7.5 V (ON)
0 V (OFF)
3.3 V (ON)
0V (OFF)
5 V
0 V (Rx)
5 V (Tx)
5 V (Rx)
C310
.01uF
D3_3V
.018uF
330K
R510
TP302
1
C311
R321
NC
D3_3V
200K
1%
1200pF
C314
VR301
MMBZ5250B
20V
R311
100K
J301
DATA
NEG
POS
4
INPUT
5
OUTPUT
6
SENSE
8
SHUTDOWN
3
TAP
NC
U320
LP2986
7
ERROR
2
FEEDBACK
1
GND
100pF
C305
D3_3V
R320
1%
330K
10uF
C321
1200pF
C315
10K 20K
R313
5
HIGH
3
6
TAB1
7
TAB2
2
NC
R312
SWITCH
S444
4
LOW
1
R508
100K
C322
.01uF
4
1
3
33uF
C303
Q494
2
6
C320
.018uF
Q313
C301
390pF
.01uF
C306
Q312
D301
.01uF
C313
C323
150pF
4
BYPASS
3
CTRL
2
GND
VIN
15
VOUT
C304
TK71730S
U330
100
.01uF
10uF
R506
C312
10uF
390pF
C302
3A
F301
C334
.01uF
C333
4
BYPASS
3
CTRL
2
GND
VIN
15
VOUT
R310
TK71750S
U310
100K
20V
MMBZ5250B
VR302
NC
1200pF
C316
3
1
2
100K
R509
Q493
R322
100K
C331
.01uF
R507
100
SWB+
BATT_CHARGE
Q311
D3_3V
3V
RESET
VOLUME
ON_OFF
5T
USWB+
RX_ENA
5V
TX_ENA
5R
UHF2 (438-470 MHz) DC Regulation Schematic Diagram PCB No. 8486348Z13-C