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ATA5428_14 Datasheet, PDF (1/85 Pages) ATMEL Corporation – UHF ASK/FSK Transceiver | |||
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ATA5428
UHF ASK/FSK Transceiver
DATASHEET
Features
â Multi channel half-duplex transceiver with approximately ±2.5MHz programmable
tuning range
â High FSK sensitivity: â106dBm at 20Kbit/s/â109.5dBm at 2.4Kbit/s (433.92MHz)
â High ASK sensitivity: â112.5dBm at 10Kbit/s/â116.5dBm at 2.4Kbit/s (433.92MHz)
â Low supply current: 10.5mA in RX and TX Mode (3V/TX with 5dBm)
â Data Rate: 1 to 20Kbit/s Manchester FSK, 1 to 10Kbit/s Manchester ASK
â ASK/FSK receiver uses a low-IF architecture with high selectivity, blocking, and low
intermodulation (typical blocking 55dB at ±750kHz/61dB at ±1.5MHz and
70dB at ±10MHz, system I1dBCP = â30dBm/system IIP3 = â20dBm)
â 226kHz/237kHz IF frequency with 30dB image rejection and 170kHz usable IF
bandwidth
â Transmitter uses closed loop fractional-N synthesizer for FSK modulation with a
high PLL bandwidth and an excellent isolation between PLL/VCO and PA
â Tolerances of XTAL compensated by fractional-N synthesizer with 800Hz RF
resolution
â Integrated RX/TX-switch, single-ended RF input and output
â RSSI (Received Signal Strength Indicator)
â Communication to microcontroller with SPI interface working at max.500kBit/s
â Configurable self polling and RX/TX protocol handling with FIFO-RAM buffering of
received and transmitted data
â Five push button inputs and one wake-up input are active in power-down mode
â integrated XTAL capacitors
â PA efficiency: up to 38% (433.92MHz/10dBm/3V)
â Low in-band sensitivity change of typically ±1.8dB within ±58kHz center frequency
change in the complete temperature and supply voltage range
â Supply voltage switch, supply voltage regulator, reset generation, clock/interrupt
generation and low battery indicator for microcontroller
4841H-WIRE-09/14
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