DW9255
GPS Antenna
SAW
1st IF Filter
LNA
GP2010/15
RF Front End
DW9255
Clock
Crystal
GP2021
12 channel
Correlator
+ Support
Functions
DATA BUS
ADDRESS BUS
TO
PROCESSOR
TCXO
2 x Serial
Communications Ports
(Programmable UARTS)
Fig.2 DW9255 used with GPS chipset
ELECTRICAL CHARACTERISTICS
(Typ. @ 25°C)
Parameter
Centre Frequency
1dB Bandwidth
Insertion Loss
Amplitude Ripple
(34.62 to 36.22MHz)
Relative Attenuation
<28MHz
(relative to insertion loss) <31MHz
<33.5MHz
>37.5MHz
>40MHz
>50MHz
>63MHz
>73 - 110MHz
Group Delay Ripple
(34.62 to 36.22MHz)
Maximum Group Delay
(34.62 to 36.22MHz)
Operating Temperature Range
Min
-
1.6
16
-
35
30
21
21
25
30
28
40
-
-
-40
Typ
35.42
1.9
17
0.8
40
35
25
25
30
40
35
45
190
1.6
-
Max
-
-
18
1.6
-
-
-
-
-
-
-
-
300
1.7
+85
Units
MHz
MHz
dB
dB (pk to pk)
dB
dB
dB
dB
dB
dB
dB
dB
ns
µs
°C
2
MITEL [ MITEL NETWORKS CORPORATION ]
