uaa1570hl NXP Semiconductors, uaa1570hl Datasheet - Page 5

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

Philips Semiconductors
5
1999 May 10
handbook, full pagewidth
Global Positioning System (GPS) front-end
receiver circuit
Shaded blocks are NOT active during synthesizer state.
(1) The default values are: L = 10, N = 71 and R = 4.
BLOCK DIAGRAM
V CCA(LNA2)
V CCA(VCO)
LNA2GND1
LNA2GND2
BIASGND2
LNA2OUT
VCOGND
P12GND
LNA2IN
CLOCK
REFIN
TANK
10
11
12
1
2
3
4
5
6
7
8
9
to data register
LNA2
SQUARING
VCO
CIRCUIT
13
48
14
47
MIXER 1
15
UAA1570HL
DIVIDE-BY-1 or 2
LNA1
DIVIDE-BY-R
46
(4 to 31)
16
45
17
44
(1)
18
Fig.1 Block diagram.
DIVIDE-BY-L
43
DIVIDE-BY-2
(4 to 15)
register
to data
42
23
5
(1)
41
DIVIDE-BY-1 or 2
DIVIDE-BY-N
FREQUENCY
DIVIDE-BY-2
DIVIDE-BY-3
DETECTOR
(64 to 127)
PHASE
19
40
DIVIDE-BY-2
20
MIXER 2
(1)
21
39
22
24
38
DATA REGISTER
PROGRAMMING
QUANTIZER
SQUARING
FOR
CIRCUIT
37
MHB269
UAA1570HL
Product specification
36
35
33
31
32
34
30
29
28
27
26
25
V CCA(PLL)
DGND
V DDD
V CCA(LIM)
DATA
SIGN
BFCP
LIMINP
LIMINN
BFCN
LIMGND
IF2N