The IC is a low power ASK/FSK Receiver for the frequency bands 300-320, 425-450, 863-870 and 902-928 MHz. Bi-phase modulation schemes, like Manchester, bi-phase mark, bi-phase space and differential Manchester are supported.

The chip offers best-in-class sensitivity performance at a very high level of integration and needs only a few external components.

The device is qualified to automotive quality standards and operates between -40 and

+105°C at supply voltage ranges of 3.0-3.6 Volts or 4.5-5.5 Volts.

The receiver is realized as a double down conversion super-heterodyne/low-IF architecture each with image rejection supplemented by digital signal processing in the baseband. A fully integrated Sigma-Delta Fractional-N PLL Synthesizer allows for high- resolution frequency generation and uses a crystal oscillator as the reference. The on- chip temperature sensor may be utilized for temperature drift compensation via the crystal oscillator.

Features :

Enhanced sensitivity receiver
Multi-band/Multi-Channel (300-320, 425-450, 863-870 and 902-928 MHz)
One crystal frequency for all supported frequency bands
21-bit Sigma-Delta Fractional-N PLL synthesizer with high resolution of 10.5 Hz
Up to 4 parallel parameter sets for autonomous scanning and receiving from different sources reduces significantly host processor power consumption and system standby power consumption
Up to 12 different frequency channels are supported with 10.5 Hz resolution each
Autonomous receive mode leads to reduced noise of host processor and improved system performance
Ultrafast Wake-up on RSSI
Fast synchronization on incoming data stream typically within first 4 bits of a telegram
Selectable IF filter bandwidth and optional external filters possible
Double down conversion image reject mixer
ASK and FSK capability
Automatic Frequency Control (AFC) for carrier frequency offset compensation
Supports bi-phase line codes like Manchester, bi-phase mark/space and differential Manchester
NRZ data pre-processing capability
Digital base band receiver with clock synch, frame synch, format decoding and FIFO
Separate outputs for recovered data and clock
RSSI peak detectors
Wake-up generator and polling timer unit
Message ID scanning
Unique 32-bit serial number
On-chip temperature sensor
Integrated timer usable for external watch unit
Integrated 4-wire SPI interface bus
Supply voltage range 3.0 Volts to 3.6 Volts or 4.5 Volts to 5.5 Volts
Operating temperature range -40 to +105°C
ESD protection +/- 2 kV on all pins
Package PG-TSSOP-28