PT4301

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw Low Power High Sensitivity 315/434 MHz OOK/ASK Superheterodyne Receiver Preliminary PT4301 DESCRIPTION The PT4301 is a very low power consumption and high sensitivity single chip OOK/ASK superheterodyne receiver for the 315MHz and 434MHz frequency bands which offers a high level of integration and requires only a few external components. The PT4301 consists of a low-noise amplifier (LNA), an image-rejection mixer, an on-chip phase-locked loop (PLL) with integrated voltage-controlled oscillator (VCO) and loop filter, a 10.7MHz intermediate frequency (IF) limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data recovery circuitry (data filter, peak detector, and data slicer). The PT4301 also implements a discrete one-step automatic gain control (AGC) that reduces the LNA gain by 20dB when the RF input signal is greater than -60dBm. The PT4301 is available in 24-pin SSOP package and is specified over the extended temperature range (-40 to +85oC). FEATURES Low current consumption (5mA fully active mode at 315MHz) 2.4 to 5.5V supply voltage operation range Optimized for 315 or 434MHz ISM Band On-chip image-rejection function High dynamic range with on-chip AGC Power down mode with very low supply current (<1µA) High sensitivity of -114dBm (2Kb/s AM 99% square-wave modulation, 315MHz) Low external parts count 24-pin SSOP package APPLICATIONS www....