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GP1020IGGPKR Datasheet

  • GP1020IGGPKR

  • SIX-CHANNEL PARALLEL CORRELATOR CIRCUIT FOR GPS OR GLONASS R...

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FEBRUARY 1994
DS3605-2.2
GP1020
SIX-CHANNEL PARALLEL CORRELATOR CIRCUIT
FOR GPS OR GLONASS RECEIVERS
The GP1020 is a six-channel CMOS digital correlator which
has been designed to work with the GP1010 L1-channel down-
converter or other integrated circuits, and may be used to acquire
and track the GPS C/A code or the GLONASS signals.
For each of the six channels the GP1020 includes independ-
ent digital down-conversion to baseband, C/A code generation,
correlation, and accumulate-and-dump registers.
The GP1020 interfaces with a microprocessor via a 16-bit
data bus to control the acquisition and tracking processes using
the various registers on the chip.
90
61
91
60
FEATURES
GP
1020
s
Six Fully Independent Correlation Channels
s
Switchable to Receive GPS or GLONASS Codes
s
Input Multiplexer for Multiple GPS Front-Ends 鈥?Allows
Antenna Diversity
120
31
s
Input Multiplexer for GLONASS Multiple (Separate
Channels) Front-Ends
s
Digital Interface Compatible with Most 16 or 32-Bit
Microprocessors
1
30
GP120
Fig 1 Pin connections - top view
s
Fully Compatible with GP1010 GPS Receiver Front-End
s
Sideways Stackable to give Multiples of Six Channels
s
120-pin Plastic Quad Flatpack
s
Power Dissipation Less Than 500mW
APPLICATIONS
ABSOLUTE MAXIMUM RATINGS
These are not the operating conditions, but are the absolute
limits which if exceeded, even momentarily, may cause perma-
nent damage. To ensure sustained correct operation the device
should be used within the limits given under Electrical Character-
istics.
Supply voltage (V
DD
) from ground (V
SS
):
20路3V
to16路0 V
Input voltage (any input pin):
V
SS
20路3V
to V
DD
10路3
V
Output voltage (any output pin):
V
SS
20路3V
to V
DD
10路3
V
Storage temperature:
255擄C
to
1125擄C
s
GPS or GLONASS Navigation Systems
s
High Integrity Combined Receivers
s
GPS Geodetic Receivers
s
GPS Time Reference
ORDERING INFORMATION
The GP1020 is available in 120-pin Quad Flatpacks (Gullwing
formed leads) in both Commercial (0擄C to
170擄C)
and Industrial
(240擄C to
185擄C)
grades. The ordering codes below are for
standard screened devices.
RELATED PRODUCTS
Part
Description
Datasheet
Reference
DS3861
DS3076
ORDERING CODES
GP1020 CG GPKR
Commercial - Plastic 120-pin QFP (GP120)
GP1020 IG GPKR
Industrial - Plastic 120-pin QFP (GP120)
DW9255 35路42MHz SAW Filter
GP1010
GPS Receiver Front-End

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