ESD Protected Low Noise Amplifier (LNA) for 433 MHz (LoRa APRS) + 18dB Gain

This high-performance Low Noise Amplifier (LNA) is designed specifically for 433 MHz applications, such as LoRa APRS, providing excellent sensitivity and signal integrity. It incorporates an ESD protection circuit and a SAW bandpass filter (B39431B3710U410) to enhance out-of-band rejection.

Key Features

• Operating Frequency: 433 MHz (optimized for LoRa APRS)
• Amplifier Module: PGA-103+
• Gain: 18 dB
• Low Noise Figure: 0.6 dB, ensuring minimal signal degradation
• High Linearity: IP3 > 41 dBm for improved interference resilience
• Output Power (P1dB): 22.5 dBm, supporting robust signal amplification
• Integrated SAW Bandpass Filter: B39431B3710U410 for superior selectivity
• Power Supply: 5V/3V via Bias-T, enabling remote power injection
• ESD Protection: Built-in safeguards to prevent electrostatic damage

Additional Resources

• Datasheet: PGA-103+
• Datasheet: SAW B39431B3710U410

This LNA is ideal for applications requiring low noise, high gain, and excellent selectivity, ensuring optimal performance for 433 MHz LoRa APRS and other RF systems.

Rejection Versus Gain