GP2015
GPS Receiver RF Front End
DS4374
ISSUE 3.1
February 2002
The GP2015 is a small format RF Front-end for Global
Positioning System (GPS) receivers. Equivalent in
performance to the GP2010 but in a TQFP package, this
product is suited for size-critical applications as the RF area
can be reduced by a factor of two to three using miniature
surfacemountpassivecomponents TheGP2015isdesigned
to operate from either 3 or 5 Volt supplies.
Ordering Information
GP2015 IG FP1N (Trays, Bake & Drypack)
(Supersedes GP2015 IG FP1R)
GP2015 IG FP1Q (Tape mounted, Bake & Drypack)
48 pin TQFP (-40°C to +85°C)
The input to the device is the L1 (1575.42MHz) Coarse-
Acquisition (C/A) code Global Positioning signal from an
antenna (via a low-noise pre-amplifier). The output is 2-bit
quantised for subsequent signal processing in the digital
domain.TheGP2015containsanon-chipsynthesiser,mixers,
AGC and a quantiser which provides Sign and Magnitude
digitaloutputs.Aminimumofexternalcomponentsisrequired
to make a complete GPS front-end.
36 35 34 33 32 31 30 29 28 27 26 25
37
38
39
24
23
22
40
41
21
20
42
19
GP2015
ThedevicehasbeendesignedtooperatewiththeGP2021
12-channel GPS Correlator and GP4020 GPS Baseband
Processor, both available from Zarlink Semiconductor.
43
44
18
17
45
46
47
48
16
15
14
13
Features
• Ultra miniature TQFP package
• Low Voltage Operation (3V - 5V)
• Low Power - 200mW typ. (3V supply)
• C/A Code Compatible
• On-chip PLL Including Complete VCO
• Triple Conversion Receiver
• 48-Lead Surface Mount Quad Flat-Pack Package
• Sign and Magnitude Digital Outputs
• Compatible with GP2021 and GP4020 Correlators
1
2
3
4
5
6
7
8
9
10 11 12
FP48
Pin
Name
Pin
25 N/C
26 CC (DIG)
27 REF 2
28 REF 1
29
30
31
Name
1
2
3
4
5
6
7
8
9
IF Output
PLL Filter 1
PLL Filter 2
V
VEE (OSC)
VCC (OSC)
VEE (OSC)
VEE (REG)
V
V
V
CC (RF)
EE (RF)
EE (RF)
PRef
PReset
VEE (IO)
32 RF Input
33
34
35
VEE (RF)
VEE (RF)
VCC (RF)
10
11 CLK
Applications
• C/A Code Global Positioning by Satellite Receivers
• Time Standards
• Navigation
12 N/C
13 N/C
14 MAG
15 SIGN
16 OPCIK-
17 OPCIK+
36 N/C
37 O/P 1-
38 O/P 1+
39
VCC (2)
40 I/P 2-
41 I/P 2+
• Surveying
18
V
DD (IO)
42
43
V
V
EE (IF)
EE (IF)
Related Products and Publications
19 PDN
20 TEST
21 LD
Data
Reference
Part
Description
44 O/P 2-
45 O/P 2+
22
23 AGC -
24
V
EE (DIG)
46
VCC (3)
GP2021
GP4020
Twelve-Channel Correlator
GPS Baseband Processor
DS4057
47 I/P 3-
48 I/P 3+
DS5134
AN4808
AGC +
App. Note
GPS ORION 12 Channel GPS
Receiver Reference Design
Figure 1 - Pin connections - top view
App Note.
App. Brief
GP2000 GPS Receiver
Hardware Design
AN4855
AB5202
GP2010/GP2015: Using Murata
SAFJA35M4WC0Z00 SAW Filter
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