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ATA5744

ATMEL Corporation
Part Number ATA5744
Manufacturer ATMEL Corporation
Description UHF ASK Receiver
Published Jun 14, 2007
Detailed Description Features • Minimal External Circuitry Requirements, no RF Components on the PC Board Except • • • • • • • • • • • • Matc...
Datasheet PDF File ATA5744 PDF File

ATA5744
ATA5744

Overview
Features • Minimal External Circuitry Requirements, no RF Components 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 dB is thereby Achievable with Newer SAWs Power Management (Polling) is Possible by Means of a Separate Pin via the Microcontroller Receiving Bandwidth BIF = 600 kHz 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 communication 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.
www.
DataSheet4U.
com Figure 1-1.
1 Li cell System Block Diagram UHF ASK/FSK Remote control transmitter UHF ASK Remote control receiver U2741B Encoder ATARx9x XTO ATA5744 Demod.
PLL IF Amp Data interface 1.
.
.
3 Microcontroller Keys Antenna Antenna VCO PLL XTO Power amp.
LNA VCO 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 19 20 18 16 15 14 13 17 ATA5744 8 2 4 6 1 3 BR_0 BR_1 AVCC 5 MIXVCC AGND 7 Table 2-1.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin Description Symbol BR_0 BR_1 CDEM AVC...


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