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ATA5811 Datasheet(PDF) 1 Page - ATMEL Corporation |
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ATA5811 Datasheet(HTML) 1 Page - ATMEL Corporation |
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1 / 90 page  Rev. 4689B–RKE–04/04 Features • High FSK Sensitivity: -106 dBm at 20 kBaud/-109.5 dBm at 2.4 kBaud (433.92 MHz) • High ASK Sensitivity: -112.5 dBm at 10 kBaud/-116.5 dBm at 2.4 kBaud (433.92 MHz) • Low Supply Current: 10.5 mA in RX and TX Mode (3 V/TX with 5 dBm) • Data Rate 1 to 20 kBaud Manchester FSK, 1 to 10 kBaud Manchester ASK • ASK/FSK Receiver Uses a Low-IF Architecture with High Selectivity, Blocking and Low Intermodulation (Typical Blocking 55 dB at ±750 kHz/61 dB at ±1.5 MHz and 70 dB at ±10 MHz, System I1dBCP = -30 dBm/System IIP3 = -20 dBm) • 226 kHz IF Frequency with 30 dB Image Rejection and 170 kHz Usable IF Bandwidth • Transmitter Uses Closed Loop Fractional-N Synthesizer for FSK Modulation with a High PLL Bandwidth and an Excellent Isolation between PLL and PA • Tolerances of XTAL Compensated by Fractional-N Synthesizer with 800 Hz RF Resolution • Integrated RX/TX-Switch, Single-ended RF Input and Output • RSSI (Received Signal Strength Indicator) • Communication to Microcontroller with SPI Interface Working at Maximum 500 kBit/s • Configurable Self Polling and RX/TX Protocol Handling with FIFO-RAM Buffering of Received and Transmitted Data • 5 Push Button Inputs and One Wake-up Input are Active in Power-down Mode • Integrated XTAL Capacitors • PA Efficiency: up to 38% (433 MHz/10 dBm/3 V) • Low Inband Sensitivity Change of Typically ±1.8 dB within ±58 kHz Center Frequency Change in the Complete Temperature and Supply Voltage Range • Supply Voltage Switch, Supply Voltage Regulator, Reset Generation, Clock/Interrupt Generation and Low Battery Indicator for Microcontroller • Fully Integrated PLL with Low Phase Noise VCO and PLL Loop Filter • Sophisticated Threshold Control and Quasi Peak Detector Circuit in the Data Slicer • Power Management via Different Operation Modes • 433.92 MHz, 868.3 MHz and 315 MHz without External VCO and PLL Components • Inductive Supply with Voltage Regulator if Battery is Empty (AUX Mode) • Efficient XTO Start-up Circuit (> -1.5 k Ω Worst Case Start Impedance) • Changing of Modulation Type ASK/FSK and Data Rate without Component Changes • Minimal External Circuitry Requirements for Complete System Solution • Adjustable Output Power: 0 to 10 dBm Adjusted and Stabilized with External Resistor • ESD Protection at all Pins (2 kV HBM, 200 V MM) • Supply Voltage Range: 2.4 V to 3.6 V or 4.4 V to 6.6 V • Temperature Range: -40°C to +105°C • Small 7 × 7 mm QFN48 Package Applications • Automotive Keyless Entry and Passive Entry Go Systems • Access Control Systems • Remote Control Systems • Alarm and Telemetry Systems • Energy Metering • Home Automation Benefits • No SAW Device Needed in Key Fob Designs to Meet Automotive Specifications • Low System Cost Due to Very High System Integration Level • Only One Crystal Needed in System • Less Demanding Specification for the Microcontroller Due to Handling of Power-down Mode, Delivering of Clock, Reset, Low Battery Indication and Complete Handling of Receive/Transmit Protocol and Polling • Single-ended Design with High Isolation of PLL/VCO from PA and the Power Supply Allows a Loop Antenna in the Key Fob to Surround the Whole Application UHF ASK/FSK Transceiver ATA5811 ATA5812 Preliminary |
Similar Part No. - ATA5811 |
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Similar Description - ATA5811 |
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