MaximMAX7034ASK数据接收器参考设计
2012-05-31
作者：Maxim公司
</a>家庭自动化" title="家庭自动化">家庭自动化" title="家庭自动化">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
_ Operates from Single +5.0V Supply
_ Selectable Image-Rejection Center Frequency
_ Selectable x64 or x32 fLO/fXTAL Ratio
_ Low (< 6.7mA) Operating Supply Current
_ < 3.0μA Low-Current Power-Down Mode for Efficient Power Cycling
_ 250μs Startup Time
_ Built-In 44dB RF Image Rejection
_ Excellent Receive Sensitivit
MAX7034应用:
Automotive Remote
Keyless Entry
Security Systems
Garage Door Openers
Home Automation
Remote Controls
Local Telemetry
Wireless Sensors
图1. MAX7034方框图
图2. MAX7034典型应用电路图
MAX7034接收器参考设计
The MAX7034 receiver reference design (RD) is a self-contained evaluation platform for exercising the product as a tube motor receiver module. This receiver (Rx) board includes a simple power supply, data interface, and an antenna connection, all in a small modular form师factor that allows the receiver to be placed inside of a tubular enclosure. The Rx board was manufactured to be usable as-is. Gerber files are available for simple cut-and-paste of the radio system design.
The MAX7034 315MHz/434MHz amplitude-shift-keyed (ASK) superheterodyne receiver is configured in a near-standard form similar to the typical application circuit illustrated in the MAX7034 data sheet. The system is targeted for 433.92MHz operation and a 1kbps (NRZ) data rate. Four resistor connections are included in the design to allow flexible use of certain pins. Two connections have resistor footprints but are wired as shorts: R5 connects IR_SEL to VDD and R6 connects EN_REG to VDD.
Two other connections are left open (unpopulated): R4 can connect DSP to DATAOUT for hysteresis and R7 can connect DSN to 3V3 for squelch. The module is designed to have a small footprint with minimal connections, to include a pair of pins for antenna/ground connections and a triplet of pins for ground/RX data/power connections. The board uses a 5V power supply.
图3. MAX7034接收器参考设计A2外形图
图4. MAX7034接收器参考设计电路图
Rx板材料清单:
图5. MAX7034接收器板PCB布局图
详情请见:
http://datasheets.maxim-ic.com/en/ds/MAX7034.pdf
和
http://pdfserv.maxim-ic.com/en/an/REFD5390.pdf
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
_ Operates from Single +5.0V Supply
_ Selectable Image-Rejection Center Frequency
_ Selectable x64 or x32 fLO/fXTAL Ratio
_ Low (< 6.7mA) Operating Supply Current
_ < 3.0μA Low-Current Power-Down Mode for Efficient Power Cycling
_ 250μs Startup Time
_ Built-In 44dB RF Image Rejection
_ Excellent Receive Sensitivit
MAX7034应用:
Automotive Remote
Keyless Entry
Security Systems
Garage Door Openers
Home Automation
Remote Controls
Local Telemetry
Wireless Sensors
图1. MAX7034方框图
图2. MAX7034典型应用电路图
MAX7034接收器参考设计
The MAX7034 receiver reference design (RD) is a self-contained evaluation platform for exercising the product as a tube motor receiver module. This receiver (Rx) board includes a simple power supply, data interface, and an antenna connection, all in a small modular form师factor that allows the receiver to be placed inside of a tubular enclosure. The Rx board was manufactured to be usable as-is. Gerber files are available for simple cut-and-paste of the radio system design.
The MAX7034 315MHz/434MHz amplitude-shift-keyed (ASK) superheterodyne receiver is configured in a near-standard form similar to the typical application circuit illustrated in the MAX7034 data sheet. The system is targeted for 433.92MHz operation and a 1kbps (NRZ) data rate. Four resistor connections are included in the design to allow flexible use of certain pins. Two connections have resistor footprints but are wired as shorts: R5 connects IR_SEL to VDD and R6 connects EN_REG to VDD.
Two other connections are left open (unpopulated): R4 can connect DSP to DATAOUT for hysteresis and R7 can connect DSN to 3V3 for squelch. The module is designed to have a small footprint with minimal connections, to include a pair of pins for antenna/ground connections and a triplet of pins for ground/RX data/power connections. The board uses a 5V power supply.
图3. MAX7034接收器参考设计A2外形图
图4. MAX7034接收器参考设计电路图
Rx板材料清单:
图5. MAX7034接收器板PCB布局图
详情请见:
http://datasheets.maxim-ic.com/en/ds/MAX7034.pdf
和
http://pdfserv.maxim-ic.com/en/an/REFD5390.pdf
本站内容除特别声明的原创文章之外，转载内容只为传递更多信息，并不代表本网站赞同其观点。转载的所有的文章、图片、音/视频文件等资料的版权归版权所有权人所有。本站采用的非本站原创文章及图片等内容无法一一联系确认版权者。如涉及作品内容、版权和其它问题，请及时通过电子邮件或电话通知我们，以便迅速采取适当措施，避免给双方造成不必要的经济损失。联系电话：010-82306118；邮箱：aet@chinaaet.com。