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PT4316 V1.6

- 1 -

August, 2007

Low Power 315/433 MHz OOK/ASK Superheterodyne

Receiver with SAW-based Oscillator

PT4316

DESCRIPTION

The PT4316 is a very low power consumption single chip OOK/ASK superheterodyne receiver for the

315MHz and 434MHz frequency bands and which offers a high level of integration and requires few

external components. The PT4316 consists of a low-noise amplifier (LNA), mixer, SAW-based local

oscillator, on-chip Sallen-Key low-pass filter, 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 PT4316 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 PT4316 is available in a 16-pin SOP or SSOP package. Both versions are specified over the

extended temperature range (-40℃ to +85℃).

FEATURES

• Low current consumption (4.2mA at VDD = 3.0V)

• 2.4V to 3.6V supply voltage operation range

• Optimized for 315MHz or 434MHz ISM Band

• Saw-based oscillator with low frequency drift

• High dynamic range with on-chip AGC

• Power down mode with very low supply current (<1µA)

• Low external parts count

• Available in 16 pins, SOP or SSOP package

APPLICATIONS

• Keyless entry systems

• Remote control systems

• Garage door openers

• Alarm systems

• Security systems

• Wireless sensors