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ATA5423_07 Datasheet, PDF (1/100 Pages) ATMEL Corporation – UHF ASK/FSK Transceiver | |||
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Features
⢠Multi Channel Half-duplex Transceiver with Approximately ±2.5 MHz Programmable
Tuning Range
⢠High FSK Sensitivity: â106 dBm at 20 Kbit/s/â109.5 dBm at 2.4 Kbit/s (433.92 MHz)
⢠High ASK Sensitivity: â112.5 dBm at 10 Kbit/s/â116.5 dBm at 2.4 Kbit/s (433.92 MHz)
⢠Low Supply Current: 10.5 mA in RX and TX Mode (3V/TX with 5 dBm)
⢠Data Rate: 1 to 20 Kbit/s Manchester FSK, 1 to 10 Kbit/s 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 = â30 dBm/System IIP3 = â20 dBm)
⢠226 kHz/237 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/VCO 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% (433.92 MHz/10 dBm/3V)
⢠Low In-band 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, PLL Loop Filter and Full Support of
Multi-channel Operation with Arbitrary Channel Distance Due to Fractional-N
Synthesizer
⢠Sophisticated Threshold Control and Quasi-peak Detector Circuit in the Data Slicer
⢠Power Management via Different Operation Modes
⢠315 MHz, 345 MHz, 433.92 MHz, 868.3 MHz and 915 MHz without External VCO and PLL
Components
⢠Inductive Supply with Voltage Regulator if Battery is Empty (AUX Mode)
⢠Efficient XTO Start-up Circuit (> â1.5 k⦠Worst Case Real Start-up 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 (1.5 kV HBM, 200V MM, 1 kV FCDM)
⢠Supply Voltage Range: 2.4V to 3.6V or 4.4V to 6.6V
⢠Temperature Range: â40°C to +85°C
⢠Small 7 à 7 mm QFN48 Package
UHF ASK/FSK
Transceiver
ATA5423
ATA5425
ATA5428
ATA5429
4841DâWIREâ10/07
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