ATA3742P3-TGQY

ATA3742P3-TGQY Datasheet


• High Sensitivity, Especially at Low Data Rates<br>• Sensitivity Reduction Possible Even While Receiving<br>• Fully Integrated VCO<br>• Low Power Consumption Due to Configurable Self-polling With a Programmable Time

Part Datasheet
ATA3742P3-TGQY ATA3742P3-TGQY ATA3742P3-TGQY (pdf)
Related Parts Information
ATA3742P3-TGSY ATA3742P3-TGSY ATA3742P3-TGSY
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• 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
• Supply Voltage 4.5V to 5.5V
• Operating Temperature Range 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

UHF ASK/FSK Receiver

ATA3742

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 kBaud for FSK in Manchester or Bi-phase code. The receiver is well-suited to operate with PLL RF transmitter IC U2741B. Its main applications in the area of wireless control are telemetering, security technology, tire-pressure monitoring 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 in this datasheet refer both to MHz and 315 MHz applications.

Figure System Block Diagram
1 Li cell

UHF ASK/FSK Remote control transmitter

U2741B

UHF ASK/FSK Remote control receiver

ATA3742

Demod

Control

Keys

Encoder ATARx9x

PLL VCO

Antenna
1 to 3 Microcontroller

Power amp.

Figure Block Diagram

FSK/ASK CDEM RSSI SENS AVCC AGND DGND

MIXVCC LNAGND

FSK/ASK Dem_out Demodulator
and Data Filter

DATA

RSSI

Limiter out

IF Amp

Sensitivity reduction

Polling circuit and
control logic
4th Order

ENABLE TEST

MODE DVCC

LPF 3 MHz

Standby Logic

LFGND
Ordering Information

Extended Type Number ATA3742P3-TGSY ATA3742P3-TGQY

Package Information

Package SO20

Dimensions in mm

Package SO20

Remarks Tube, Pb-free Taped and reeled, Pb-free
technical drawings according to DIN specifications

History
4900B-RKE-11/07
• Put datasheet in the newest template
• Pb-free Logo on page 1 deleted

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Datasheet ID: ATA3742P3-TGQY 519163