QuickView - MAX2634 315MHz/433MHz Low-Noise Amplifier for Automotive RKE


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MAX2634 315MHz/433MHz Low-Noise Amplifier for Automotive RKE

Ultra-Low-Current Low-Noise Amplifier for RKE Solutions with Low-Noise Figure and Shutdown Mode

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Status

Active: In Production.

Description

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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.

Key Features Applications/Uses

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 ±2.5kV (HBM) on All Pins
AEC-Q100 Qualification

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