Global Positioning System Gps Front-end Receiver CircuitThe UAA1570HL is a complete single-chip
double-superheterodyne receiver front-end intended for
GPs and GLONASS navigation systems. The IC includes
a programmable on-chip DPLL synthesizer, VCO with
external varactor and Resonator a 1-bit amplitude
quantizer and a time sampled TTL/CMOS compatible
SIGN output bit driver. It CAN be used with either an active
or passive Antenna system by disabling or enabling the
on-chip LNAs and is ideally suited for low power GPs
receiver applications because of its 3 V supply and the
Power Management features through control pins.
Programmable prescaler controls provide the flexibility of
using different frequency schemes.
The UAA1570HL is optimized to provide SIGN bit data to
the companion Philips part, the SAA1575HL baseband
digital signal processor. The SAA1575HL CAN provide the
sample Clock input to the UAA1570HL by dividing a
TTL/CMOS level reference Clock signal down to a
programmable sampling Clock output frequency. Both ICs
CAN also be used independently.
The UAA1570HL is supplied in a low profile, 48-pin LQFP
package for excellent Radio Frequency (RF) performance
and small size. By NXP Semiconductors
|
|
UAA1570HL Pb-Free | UAA1570HL Cross Reference | UAA1570HL Schematic | UAA1570HL Distributor |
UAA1570HL Application Notes | UAA1570HL RoHS | UAA1570HL Circuits | UAA1570HL footprint |