ATA5744 Datasheet | Atmel

Features - Minimal External Circuitry Requirements, no RF ponents on the PC Board Except - - - - - - - - - - - - Matching to the Receiver Antenna High Sensitivity, Especially at Low Data Rates SSO20 and SO20 package Fully Integrated VCO Supply Voltage 4.5V to 5.5V, Operating Temperature Range - 40°C to +105°C Single-ended RF Input for Easy Adaptation to l/4 Antenna or Printed Antenna on PCB Low-cost Solution Due to High Integration Level Various Types of Protocols Supported (i.e., PWM, Manchester and Bi-phase) Distinguishes the Signal Strength of Several Transmitters via RSSI (Received Signal Strength Indicator) ESD Protection According to MIL-STD. 883 (4KV HBM) High Image Frequency Suppression Due to 1 MHz IF in Conjunction with a SAW Front-end Filter, up to 40 d B is thereby Achievable with Newer SAWs Power Management (Polling) is Possible by Means of a Separate Pin via the Microcontroller Receiving Bandwidth BIF = 600 k Hz UHF ASK Receiver ATA5744 1. Description The ATA5744 is a PLL receiver device for the receiving range of f0 = 300 MHz to 450 MHz. It is developed for the demands of RF low-cost data munication systems with low data rates and fits for most types of modulation schemes including Manchester, Bi-phase and most PWM protocols. Its main applications are in the areas of telemetering, security technology and keyless-entry systems. .. Figure 1-1. 1 Li cell System Block Diagram UHF ASK/FSK Remote control transmitter UHF ASK Remote control receiver U2741B Encoder ATARx9x Demod. PLL IF Amp Data interface 1...3 Microcontroller Keys Antenna Antenna VCO PLL XTO Power amp. Rev. 4893A- RKE- 11/05 2. Pin Configuration Figure 2-1. Pinning SO20 and SSO20 ENABLE DVCC LFGND MODE DATA RSSI XTO LFVCC NC 10 11 TEST BR_0 BR_1 AVCC MIXVCC AGND...