PT4301

Low Power High Sensitivity 315/434MHz

OOK/ASK Superheterodyne Receiver

Tel: 886-2-66296288

‧Fax: 886-2-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan

DESCRIPTION

The PT4301 is a very low power and highly sensitive

single chip OOK/ASK super-heterodyne receiver for

the 315MHz and 434MHz frequency bands that 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 -47dBm. The PT4301 is

available in a 24-pin SSOP package.

FEATURES

 Low current consumption (5mA fully active mode at

315MHz)

 2.4V to 5.5V supply voltage operation range

 Optimized for 315MHz or 434MHz ISM Band

 On-chip image-rejection function

 High dynamic range with on-chip AGC

 Low power down mode current (<1A)

 High sensitivity of -114dBm (315MHz, 2Kb/s AM 99%

square-wave modulation)

 24-pin SSOP package

APPLICATIONS

 Remote keyless entry (RKE) systems

 Remote control systems including garage door and

gate openers

 Alarm and security systems

 Wireless sensors

BLOCK DIAGRAM