uaa1570hl NXP Semiconductors, uaa1570hl Datasheet - Page 12

• Manufacturer Part Number: uaa1570hl
• Description: Global Positioning System Gps Front-end Receiver Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1999 May 10
handbook, full pagewidth
Global Positioning System (GPS) front-end
receiver circuit
REFIN
C307
L = 1020 mils
W = 8.8 mils
ISOLATE THE REFERENCE INPUT AND
ITS HARMONICS FROM THE FIRST IF
AND ITS FILTERING COMPONENTS
V tune
C326
J301
line stretcher
analog ground
digital ground
L = 217 mils
W = 33 mils
C339
R314
VRF
50
BPF301
SAW
C306
C327
L = 412 mils
W = 6 mils
L = 900 mils
W = 8.8 mils
100
C331
D301
C323
L = 286 mils
BPF302
W = 6 mils
SAW
C328
100
CLOCK
R316
C338
REFIN
C320
C334
R307
L = 355 mils
L305
W = 6 mils
VRF
100
Fig.3 UAA1570HL RF system diagram (default application).
C322
C321
1
2
3
4
5
6
7
8
9
10
11
12
L = 386 mils
VRF
W = 6 mils
100
13
48
line stretcher
L = 376 mils
W = 33 mils
50
47
14
L = 315 mils
W = 6 mils
100
46
15
C324
C330
R311
45
16
C325
L306
VRF
17
44
C335
C313
R322
UAA1570HL
VRF
L307
18
43
C346
12
42
19
C332
R310
V tune
C316
C315
41
20
C318
C305
R315
40
21
C341
C319
C340
R306
L304
L303
C314
39
22
R319
C317
STROBE
38
23
37
24
36
35
34
33
32
31
30
29
28
27
26
25
C337
C336
C311
C312
OPTIMUM PERFORMANCE REQUIRES
THAT THE GPS DIGITAL BASEBAND,
SUPPLY REGULATORS, AND OTHER
SOURCES OF DIGITAL NOISE BE PLACED
IN THIS RELATIVE ORIENTATION TO THE
UAA1570HL.
DATA
C310
R305
C301
R301/C301
UAA1570HL
L302
Product specification
C303
C329
C304
C308
V DDD
R323
L301
C309
C302
MHB271
C347
C345
L308
L309