UAA1570HL View Datasheet(PDF) - Philips Electronics
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Description
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UAA1570HL Datasheet PDF : 76 Pages
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Philips Semiconductors
Global Positioning System (GPS) front-end
receiver circuit
5 BLOCK DIAGRAM
Product speciļ¬cation
UAA1570HL
handbook, full pagewidth
48 47 46 45 44 43
42 41
40
39 38
37
VCCA(LNA2)
LNA2GND1
LNA2IN
BIASGND2
LNA2GND2
LNA2OUT
CLOCK
1
2
3
4 LNA2
5
6
7
to data register
LNA1
UAA1570HL
DIVIDE-BY-1 or 2
PHASE
FREQUENCY
DETECTOR
DIVIDE-BY-1 or 2
DIVIDE-BY-2
DIVIDE-BY-N(1)
(64 to 127)
SQUARING
CIRCUIT
36
VCCA(PLL)
35
DGND
33 VDDD
31
VCCA(LIM)
DATA REGISTER 32
FOR
DATA
PROGRAMMING
8
REFIN
SQUARING
CIRCUIT
DIVIDE-BY-R(1)
(4 to 31)
DIVIDE-BY-3
9
VCCA(VCO)
10
TANK
11
VCOGND
VCO
12
P12GND
MIXER 1
DIVIDE-BY-2
DIVIDE-BY-L(1)
(4 to 15)
to data
register
DIVIDE-BY-2
MIXER 2
QUANTIZER
34
SIGN
30
BFCP
29
LIMINP
28
LIMINN
27
BFCN
26
LIMGND
25
IF2N
13 14 15 16 17 18
23
19 20 21 22 24
MHB269
Shaded blocks are NOT active during synthesizer state.
(1) The default values are: L = 10, N = 71 and R = 4.
Fig.1 Block diagram.
1999 May 10
5
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