资 源 简 介
The MAX1473 fully integrated low-power CMOS superheterodynereceiver is ideal for receiving amplitudeshift-keyed (ASK) data in the 300MHz to 450MHzfrequency range. Its signal range is from -114dBm to0dBm. With few external components and a low-currentpower-down mode, it is ideal for cost- and power-sensiTIveapplicaTIons typical in the automoTIve and consumermarkets. The chip consists of a low-noise amplifier(LNA), a fully differenTIal image-rejection mixer, an onchipphase-locked-loop (PLL) with integrated voltagecontrolledoscillator (VCO), a 10.7MHz IF limitingamplifier stage with received-signal-strength indicator(RSSI), and analog baseband data-recovery circuitry.The MAX1473 also has a discrete one-step automaticgain control (AGC) that drops the LNA gain by 35dBwhen the RF input signal is greater than -57dBm.The MAX1473 is available in 28-pin TSSOP and 32-pinthin QFN packages. Both versions are specified for theextended (-40°C to +85°C) temperature range.ApplicationsAutomotive Remote Keyless Entry Security SystemsGarage Door Openers Home AutomationRemote Controls Local TelemetryWireless Sensors Systems
