Datasheet > ATA3742

ATA3742

更新时间： 2022-04-23 23:00:11

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ATA3742 数据手册

Features

• IC Distinguishes the Signal Strength of Several Transmitters via RSSI (Received Signal

Strength Indicator) Output

• Minimal External Circuitry Requirements, No RF Components 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

UHF ASK/FSK

Receiver

• 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 dB Achievable With Newer 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

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 kBaud to 10 kBaud (1 kBaud to 3.2 kBaud 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 sys-

tems. 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

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