ATA5743 Datasheet, PDF (1/43 Pages) ATMEL Corporation – UHF ASK/FSK Receiver

Features
• Two Different IF Receiving Bandwidth Versions are Available (B_IF = 300 kHz or 600 kHz)
• 5V to 20V Automotive-Compatible Data Interface
• IC Condition Indicator, Sleep or Active Mode
• Data Clock Available for Manchester- and Bi-phase-coded Signals
• 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 λ/4 Antenna or Printed Antenna on PCB
• ESD Protection According to MIL-STD. 883 (2KV HBM)
• High Image Frequency Suppression Due to 1 MHz IF in Conjunction with a SAW
Front-end Filter; Up to 40 dB is Achievable with State-of-the-art SAWs
• Communication 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
• Programmable Digital Noise Suppression
• SSO20 Package
UHF ASK/FSK
Receiver
ATA5743
Benefits
• Low Power Consumption Due to Configurable Self Polling with a
Programmable Time frame Check
• High Sensitivity, Especially at Low Data Rates
• Minimal External Circuitry Requirements, no RF Components on the PC Board Except
Matching to the Receiver Antenna
• Sensitivity Reduction Possible Even While Receiving
• Low-cost Solution Due to High Integration Level
1. Description
The ATA5743 is a multi-chip PLL receiver device supplied in an SSO20 package. It
has been especially developed for the demands of RF low-cost data transmission sys-
tems with 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 U2741B. Its main
applications are in the areas of telemetering, security technology, 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 below refer to
433.92 MHz and 315 MHz applications.
Rev. 4839B–RKE–08/05