ATA2745_14 Datasheet, PDF (1/10 Pages) ATMEL Corporation – Very High Transmitting Frequency Accuracy Compared to SAW Solutions

Features
• Very High Transmitting Frequency Accuracy Compared to SAW Solutions
(Enables Receivers at Lower Bandwidth than With SAW Resonators)
• Lower Cost than the Usual Discrete Solutions Using SAW and Transistors
• Supply Voltage 2.2V to 4.0V in the Temperature Range of –40°C to 85°C
• XTO Output for Clocking the Microcontroller, Thereby, Together with the ATAR090 or
ATAR890, Resulting in the Optimum System Cost-effectiveness
• One-chip Solution With Minimum External Circuitry
• Single-ended Open-collector Output (Same Antennas Can Be Used as in Discrete
Solutions, Simpler Matching of Magnetic Loop Antennas)
• ESD Protection According to MIL-STD 883 (4 KV HBM) Except Pins XTO1, XTO2, ANT
and LF
• Very Small SSO16 Package, Pitch 0.635, 150 mil
1. Description
The ATA2745 is a PLL transmitter IC which has been developed especially for the
demands of RF low-cost data transmission systems at data rates up to 20 kBaud.
The transmitting frequency range is 310 MHz to 440 MHz. It can be used in ASK sys-
tems. The main applications of the ATA2745 are in the areas of outside temperature
metering, socket control, garage door openers, consumption metering, light/fan or air-
conditioning controls, jalousies, wireless keyboards, and various other consumer
market applications.
UHF ASK
Transmitter
ATA2745
4898B–RKE–08/06