TDA5235
Product Description
1.2
Features
• Enhanced sensitivity receiver
• Multi-band (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 2 parallel parameter sets for autonomous scanning and receiving from different
sources reduces significantly host processor power consumption and system
standby power consumption
• One frequency channels per parameter set is supported with 10.5 Hz resolution
• 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
1.3
Applications
• Remote keyless entry systems
• Remote start applications
• Tire pressure monitoring
• Short range radio data transmission
• Remote control units
• Cordless alarm systems
• Remote metering
Data Sheet
8
V1.0, 2010-02-19
INFINEON [ Infineon ]
