MAX2634 Datasheet

• Optimized for 308MHz, 315MHz, 418MHz, and 433.92MHz
• 2.2V to 5.5V Supply Voltage Range
• Low Operating Supply Current
  • 2.5mA (typ), 4mA (max)
• Logic-Controlled 1µA (max) Shutdown
• Typical Performance at 315MHz
  • 1.25dB Noise Figure
  • -16dBm Input IP3
  • 15.5dB Power Gain
• Automotive Temperature Range
  • -40°C to +125°C
• ESD Rating of ±2.0kV (HBM) on All Pins
• AEC-Q100 Qualification

• Garage Door Openers
• Remote Keyless Entry (RKE)
• Security
• Telemetry Receivers
• Tire Pressure Monitoring Systems (TPMS)

The MAX2634 low-noise amplifier (LNA) with low-power shutdown mode is optimized for 315MHz and 433.92MHz automotive remote keyless entry (RKE) applications. At 315MHz, the LNA achieves 15.5dB power gain and a 1.25dB noise figure while only consuming 2.5mA of supply current from a 2.2V to 5.5V power supply. An integrated logic-controlled low-power shutdown mode reduces power consumption to 0.1µA and replaces the two transistors typically required to implement the shutdown function in discrete-based RKE LNA solutions. The device further reduces component count by integrating the output matching and DC-blocking components, and only requires a single inductor to match the input for best noise figure and input return loss.

The device is available in a small 6-pin (2.0mm x 2.2mm x 0.9mm) lead-free SC70 package for automotive applications that require visual inspection of PCB solder connections.