Maxim MAX7034 ASK数据接收器参考设计
Maxim公司的MAX7034是全集成低功耗CMOS超外差式接收器,工作频率300MHz 到450MHz,非常适合接收ASK数据,RF灵敏度-114dBm,工作电压5V,内置44dB RF镜像抑制.主要用在汽车遥控,安全系统,车库开门器, 无线遥控门锁,家庭自动化,遥控,无线传感器,遥测等.本文介绍了MAX7034主要特性,方框图,典型应用电路以及接收器参考设计电路图,材料清单和PCB布局图.
The MAX7034 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitudeshift-keyed (ASK) data in the 300MHz to 450MHz frequency range (including the popular 315MHz and 433.92MHz frequencies). The receiver has an RF sensitivity of -114dBm. With few external components and a low-current power-down mode, it is ideal for cost-sensitive and power-sensitive applications typical in the automotive and consumer markets. The MAX7034 consists of a low-noise amplifier (LNA), a fully differential image-rejection mixer, an on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data-recovery circuitry.
The MAX7034 is available in a 28-pin (9.7mm x 4.4mm) TSSOP package and is specified over the automotive (-40℃ to +125℃) temperature range.
MAX7034主要特性:
_ Optimized for 315MHz or 433.92MHz Band
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