ATR0635 Datasheet, PDF (2/33 Pages) ATMEL Corporation – ANTARIS4 Single-chip GPS Receiver SuperSense

1. Description
The ATR0635 is a low-power, single-chip GPS receiver, especially designed to meet the
requirements of mobile applications. It is based on Atmel’s ANTARIS^™4 technology and inte-
grates an RF front-end, filtering, and a baseband processor in a single, tiny 7 mm × 10 mm
96 pin BGA package. Providing excellent RF performance with low noise figure and low power
consumption.
Due to the fully integrated design, just an RF SAW filter, a GPS TCXO and blocking capacitors
are required to realize a stand-alone GPS functionality.
The ATR0635 includes a complete GPS firmware, licensed from u-blox AG, which performs the
GPS operation, including tracking, acquisition, navigation and position data output. For normal
PVT (Position/Velocity/Time) applications, there is no need for external Flash- or ROM-memory.
The firmware supports e.g. the NMEA protocol (2.1 and 2.3), a binary protocol for PVT data,
configuration and debugging, the RTCM protocol for DGPS, SBAS (WAAS, EGNOS and MSAS)
and A-GPS (aiding). It is also possible to store the configuration settings in an optional external
EEPROM.
Due to the integrated ARM7TDMI processor and an intelligent radio architecture, the ATR0635
operates in a complete autonomous mode, utilizing on chip AGC in closed loop operation.
For maximum performance, we recommend to use the ATR0635 together with a low noise
amplifier (e.g. ATR0610).
The ATR0635 supports assisted GPS.
2 ATR0635
4928C–GPS–06/06