Maxim dual-channel receiver supports ASK, FSK

Maxim Integrated Products has introduced what it claims as the industry's first dual-channel receiver that can receive both ASK and FSK data simultaneously, the MAX1471.

The MAX1471 features high sensitivities of -114dBm (ASK) and -108dBm (FSK). It has a low-noise amplifier (LNA), an image-reject (IR) mixer, a fully integrated phase locked loop (PLL), local oscillator (LO), a 10.7MHz IF limiting amplifier with received-signal-strength indicator (RSSI), a low-noise FM demodulator, and a 3.0V voltage regulator. Differential peak-detecting data demodulators are included for both FSK and ASK analog baseband data recovery.

Operating from 300MHz to 450MHz, MAX1471, includes an on-chip 45dB image-rejection mixer, which eliminates the need for SAW filters in many applications. The device works from either a 3.3V or 5V supply, down to 2.4V. It powers applications such as remote-keyless-entry systems, car alarms, tire-pressure monitoring systems, home-security systems, remote controls, and garage-door openers.

Lastly, the receiver functions over an automotive temperature range of -40°C to +125°C and comes in a 32-pin thin TQFN. Prices start at $2.39 (10,000-up, FOB U.S.).