Analog Devices MAX7042 Product Info

• +2.4V to +3.6V or +4.5V to +5.5V Single-Supply Operation
• Four User-Selectable Carrier Frequencies 308, 315, 418, and 433.92MHz
• -110dBm RF Input Sensitivity at 315MHz
• -109dBm RF Input Sensitivity at 433.92MHz
• Fast Startup (< 250µs)
• Small 32-Pin TQFN Package
• Low Operating Supply Current
  • 6.2mA Continuous
  • 20nA Power-Down
• Integrated PLL, VCO, and Loop Filter
• 45dB Integrated Image Rejection
• Selectable IF BW with External Filter
• Positive and Negative Peak Detectors
• RSSI Output

The MAX7042 fully integrated, low-power, CMOS superheterodyne RF receiver is designed to receive frequency-shift-keyed (FSK) data at rates up to 66kbps nonreturn-to-zero (NRZ) (33kbps Manchester). The MAX7042 requires only a few external components to realize a complete wireless RF receiver at 308, 315, 418, and 433.92MHz.

The MAX7042 includes all the active components required in a superheterodyne receiver including a low-noise amplifier (LNA), an image-rejection (IR) mixer, a fully integrated phase-locked loop (PLL), local oscillator (LO), 10.7MHz IF limiting amplifier with received-signal-strength indicator (RSSI), low-noise FM demodulator, and a 3V regulator. Differential peak-detecting data demodulators are included for baseband data recovery.

The MAX7042 is available in a 32-pin TQFN and is specified over the automotive -40°C to +125°C temperature range.

Applications

• Home and Office Lighting Control
• Home Automation
• Local Telemetry Systems
• Remote Keyless Entry (RKE)
• Remote Sensing
• Security Systems
• Smoke Alarms
• Tire-Pressure Monitoring (TPM)