Motorola HT Series User Manual

900 MHz Circuit Board/Schematic Diagrams and Parts List (PCB 8485910Z01) 9-457
IF
Vdda
RSSI
R
AW_RSSI
R5
0.3V Note 3
1.53V Note 2
RSSI_1_ZIF
3V Note 3
2.5V Note 2
2.4V
Note 3
2.45V
2.84V
1.75V
-19.5 dBm @219.3MHz Note 1
TP350
0.5V to 2.7V
Notes:
1. Measured using high impedance probe.
2. Measured with -50dBm 938 MHz RX signal at the antenna input.
3. Measured with no RX signal at the antenna input.
(SOURCE)
LVZIF TOP SHIELD
LVZIF BTM SHEILD
Second LO
CRYSTAL FILTER SHEILD
LVZIF
IF Amp IF Filter
DISC
GUARD BAND
FE_AGC
1.4V Note 3
Note 1, Note 2
-30.8 dBm @ 109.65MHz
5V
3V
Note 3
DATA
16.8MHz
CLK
LVZIF_SEL
GND4
1
IN
4
OUT
2
GND1 GND2
35
GND3
6
8
VAG
32
VAG_REF
25
VPP
9
3
RED_VCC
1
RED_VSS
2
ROSE_VCC
30
ROSE_VSS
29
RSSI_FLT
5
RSSI_OUT
4
TESTA
16
TESTD
15
LIM
31
MIX_BYP
42
MIX_IN
46
MLPD_CR
24
PHASE_LOCK
26
PREAMP_OUT
47
PRE_AGC
48
PRE_IN
11
EXTBS
6
FREF
21
GND
20
GOLD_VCC
10
GOLD_VSS
14
GREEN_VCC
41
GREEN_VSS
43
IOUT
36
C4P
37
CEX
19
CLK
18
COL
13
DATA
17
DEMOD_HF
28
DEMOD_OUT
27
EMIT
22
BRP_OFF
23
C1M
33
C1P
40
C2M
34
C2P
39
C3M
35
C3P
38
C4M
AFC
7
BASE
12
BLUE_VCC
45
BLUE_VSS
44
BROWN_VCC
5
GND
3
2
NC
1
4
VCC
10uF
C373
C394
680pF
Q350
9.1pF
SH352
C385
0.1uF
C380
1uF
C363
SH351
15pF
C387
680pF
C384
100nH
L355
R363
47K
10K
R362
10uF
C350
U350
C358
0.1uF
R350
20
0.22uF
C360
R351
120
390nH
L351
U351
C392
13pF
C389
1uF
1uF
C364
SH353
470nH
L354
C382
10uF
1.5K
R359
C354
.022uF
12pF
0.22uF
C372
C376
C391
.01uF
15pF
C388
R365
3.6K
C386
15pF
33nH
L356
0.1uF
L352
390nH
C381
C357
1uF
0.22uF
C353
4700pF
C371
SH350
4700pF
C361
0.1uF
C393
8pF
C365
4.3pF
C377
FL350
U352
10K
R355
1uF
C366
R356
1.5K
C356
100pF
.022uF
C374
R364
2K
1.5K
R366
C383
.022uF
2.2uH
L350
CR350
C369
4700pF
C379
100nH
L353
1500pF
12K
R353
4700pF
C362
12K
R352
L357
2.2uH
R360
47K
C378
0.5pF
0.1uF
C370
R358
C355
47K
0.1uF
C367
.022uF
0.22uF
C359
.022uF
C352
200
R361
13pF
C390
AGC Processing
109.65MHz Crystal Filter
Second LO
Second LO Loop Filter
IF Amplifier
FL0830710O
Figure 9-280. 900 MHz Receiver Back End Schematic Diagram

Motorola HT Series Specifications

General

Battery Type	Li-Ion
Waterproof	IP54
Operating Temperature	-30°C to +60°C
Frequency Range	VHF: 136-174 MHz
Number of Channels	16