ATA3745 Datasheet, PDF (1/30 Pages) ATMEL Corporation – UHF ASK/FSK Receiver

Features
• Supply Voltage 4.5V to 5.5V
• Operating Temperature Range –40°C to +85°C
• Minimal External Circuitry Requirements, No RF Components on the PC Board Except
Matching to the Receiver Antenna
• High Sensitivity, Especially at Low Data Rates
• Sensitivity Reduction Possible Even While Receiving
• Fully Integrated VCO
• Low Power Consumption Due to Configurable Self-polling with a Programmable Time
Frame Check
• Single-ended RF Input for Easy Matching to λ / 4 Antenna or Printed Antenna on PCB
• Low-cost Solution Due to High Integration Level
• ESD Protection According to MIL-STD 883 (4 KV HBM) Except Pin POUT (2 KV HBM)
• High Image Frequency Suppression Due to 1 MHz IF in Conjunction With a SAW
Front-end Filter. Up to 40 dB is Thereby Achievable With Newer SAWs
• Programmable Output Port for Sensitivity Selection or for Controlling External
Periphery
• Communication to the Microcontroller Possible via a Single, Bi-directional Data Line
• Power Management (Polling) is also Possible by Means of a Separate Pin via the
Microcontroller
UHF ASK/FSK
Receiver
ATA3745
1. Description
The ATA3745 is a multi-chip PLL receiver device supplied in an SO20 package. It has
been specially developed for the demands of RF low-cost data transmission systems
with low data rates from 1 kBaud to 10 kBaud in Manchester or Bi-phase code. The
receiver is well-suited to operate with Atmel’s PLL RF transmitter ATA2745. It can be
used in the frequency receiving range of f₀ = 310 MHz to 440 MHz for ASK data trans-
mission. All the statements made below refer to 433.92 MHz and 315 MHz
applications.
The main applications of the ATA3745 are in the areas of outside temperature meter-
ing, socket control, garage door openers, consumption metering, light/fan or
air-conditioning control, jalousies, wireless keyboards, and various other consumer
market applications.
Rev. 4901A–RKE–11/05