Maxim’s new MAX7036 is a low-IF, superheterodyne receiver for ASK/OOK data in the 300 MHz to 450 MHz frequency range. Only requiring a few external components to implement a complete receiver chain solution, the device integrates an LNA, self-contained PLL block, 400 kHz IF filter with RSSI, and analog baseband, data-recovery circuitry. To ensure consistent receiver sensitivity of -109 dBm, these blocks have been designed to operate over the -40°C to +105°C temperature range. The MAX7036 is suitable for applications such as remote keyless-entry systems, car alarms, home security systems, remote controls and garage door openers. The IC has a power-down pin to put it in a low-current sleep mode, making it suitable for power-sensitive applications. It also contains an automatic gain control (AGC) circuit that reduces the LNA gain by 30 dB when the input signal power is large.
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