ATA3742 Datasheet | Atmel

Features - IC Distinguishes the Signal Strength of Several Transmitters via RSSI (Received Signal - - - - - - - - - - - - - Strength Indicator) Output Minimal External Circuitry Requirements, No RF ponents 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 Supply Voltage 4.5V to 5.5V Operating Temperature Range - 40°C to +105°C Single-ended RF Input for Easy Adaptation 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) High Image Frequency Suppression Due to 1 MHz IF in Conjunction With a SAW Front-end Filter (Up to 40 d B Achievable With Newer SAWs) munication to 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 ATA3742 .. 1. Description The ATA3742 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 data rates from 1 k Baud to 10 k Baud (1 k Baud to 3.2 k Baud for FSK) in Manchester or Bi-phase code. The receiver is well-suited to operate with Atmel’s PLL RF transmitter IC U2741B. Its main applications in the area of wireless control are telemetering, security technology, tire-pressure monitoring and keyless-entry systems. It can be used in the frequency receiving range of f0 = 300 MHz to 450 MHz for ASK or FSK data transmission. All the statements made in this datasheet refer both to 433.92 MHz and 315 MHz applications. Rev. 4900A- RKE- 11/05 Figure 1-1. System Block Diagram UHF ASK/FSK Remote control transmitter UHF ASK/FSK Remote control receiver ATA3742 Demod Encoder ATARx9x PLL Antenna Antenna XTO VCO PLL XTO Control 1...3...