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T5744

ATMEL Corporation
Part Number T5744
Manufacturer ATMEL Corporation
Description UHF ASK Receiver
Published May 1, 2007
Detailed Description Features • Minimal External Circuitry Requirements, no RF Components on the PC Board Except • • • • • • • • • • • • Matc...
Datasheet PDF File T5744 PDF File

T5744
T5744

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.
5 V to 5.
5 V, 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 Biphase) 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 Frontend 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 T5744 Description The T5744 is a PLL receiver device for the receiving range of f 0 = 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, Biphase and most PWM protocols.
Its main applications are in the areas of telemetering, security technology and keyless-entry systems.
www.
DataSheet4U.
com Figure 1.
System Block Diagram UHF ASK/FSK Remote control transmitter UHF ASK Remote control receiver 1 Li cell U2741B T5744 Demod.
Data interface 1.
.
.
3 µC Keys Encoder M44Cx9x XTO PLL IF Amp Antenna Antenna VCO PLL XTO Power amp.
LNA VCO Rev.
4521B–RKE–01/03 1 Pin Configuration Figure 2.
Pinning SO20 and SSO20 ENABLE LFGND MODE DATA DVCC RSSI XTO LFVCC n.
c.
10 11 TEST 20 16 15 14 13 19 18 17 T5744 8 2 4 6 1 3 5 CDEM DGND AGND AVCC BR_0 BR_1 7 LNAGND Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol BR_0 BR_1 CDEM AVCC AGND DGND MIXVCC LNAGND LNA...


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