The PT4330
is a low power 315/433/868/915 MHz FM/FSK receiver IC which is suitable for
use in the North American 315/915 MHz and the European 433/868 MHz ISM bands. The
PT4330 chip consists of a low-noise amplifier (LNA), a down-conversion mixer, a 10.7 MHz
intermediate frequency limiting amplifier stage with received-signal-strength indicator (RSSI),
a quadrature demodulator, and a selectable audio amplifier/slicing comparator. It also
integrates a VCO with fixed ÷ 64 prescaler, phase/frequency detector, and reference oscillator
forming complete phase-locked loop. The PT4330 is available in 32-pin TQFP package, and
is specified over the extended temperature range from –10 °C to +70 °C.
Features
Supply voltage range from 2.4 V to 5.0 V
Low power consumption of 7.5 mA for fully operation at 915 MHz
Excellent FSK sensitivity of the order of –100 dBm (180 KHz channel bandwidth and 0.1% BER)
Reduced peripheral components
Fixed RSSI response with 70 dB dynamic range in both FM and FSK modes
Receiver enable pin for power saving (1 μA current consumption in stand-by mode)