The PT4316 is a very low power consumption single chip OOK/ASK superheterodyne receiver for the 315 MHz and 434 MHz frequency bands which offers a high level of integration and requires only a few external components.
The PT4316 consists of a low-noise amplifier (LNA), mixer, SAW-based 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) to avoid the system saturation for the large RF input power. The PT4316 is available in 16-pin SOP or SSOP package. Both versions are specified for the extended (–40 oC to +85 oC) temperature range.