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U2745B-MFB

器件名称: U2745B-MFB
功能描述: UHF ASK TRANSMITTER
文件大小: 188.7KB    共9页
生产厂商: ATMEL
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简  介: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 2.2 V to 4.0 V in the Temperature Range of -40°C to 85°C XTO Output for Clocking the Microcontroller, Thereby Together with the ATAR090 or ATAR890 Results in the Optimum System Cost-effectiveness One-chip Solution with Minimum External Circuitry Very Small SSO16 Package, Pitch 0.635, 150 mil “Single-ended Open-collector” Output (Same Antennas Can Be Used as in Discrete Solutions, Simpler Adaptation of Magnetic Loop Antennas) ESD Protection According to MIL-STD.883 (4 KV HBM) Except Pins XTO1/ 2, ANT and LF UHF ASK Transmitter U2745B Electrostatic sensitive device. Observe precautions for handling. Description The U2745B is a PLL transmitter IC which has been especially developed 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 systems. The main applications of the U2745B are in the areas of outside temperature metering, socket control, garage door opener, consumption metering, light/fan or aircondition control, jalousies, wireless keyboard and various other consumer market applications. Rev. 4734A–RKE–11/03 Figure 1. System Block Diagram UHF ASK Remote control transmitter 1 Li cell UHF ASK Remote control receiver U2745B……
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