參數(shù)資料
型號(hào)： U3745BM-MFL
廠商： TEMIC SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡(luò)
英文描述： UHF ASK RECEIVER IC
中文描述： SPECIALTY TELECOM CIRCUIT, PDSO20
封裝： SO-20
文件頁(yè)數(shù)： 1/29頁(yè)
文件大小： 553K
代理商： U3745BM-MFL
1
Features
Supply Voltage 4.5 V to 5.5 V
Operating Temperature Range -40°C to +85°C
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
Single-ended RF Input for Easy Matching to /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) Except Pin POUT (2 KV HBM)
High Image Frequency Suppression Due to 1 MHz IF in Conjunction with a SAW Front-
end Filter. Up to 40 dB is Thereby Achievable with Newer SAWs
Programmable Output Port for Sensitivity Selection or for Controlling External
Periphery
Communication to the Microcontroller Possible via a Single, Bi-directional Data Line
Power Management (Polling) is also Possible by Means of a Separate Pin via the
Microcontroller
Description
The U3745BM 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 low 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 U2745B. It can be
used in the frequency receiving range of f
0
= 310 MHz to 440 MHz for ASK data trans-
mission. All the statements made below refer to 433.92-MHz and 315-MHz
applications.
The main applications of the U3745BM are in the areas of outside temperature meter-
ing, socket control, garage door opener, consumption metering, light/fan or air-
condition control, jalousies, wireless keyboard and various other consumer market
applications.
UHF ASK
Receiver IC
U3745BM
Rev. 4663A–RKE–06/03
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參數(shù)描述
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