LNA Low Noise RF Broadband Amplifier 1MHz-4GHz 20dB
Part number: 1M4000MHZBluetooth, WiFi, RF & LoRa
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Prices updated: 14 Oct 2026
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About this product
A shielded broadband low-noise amplifier module with 20 dB gain, covering 1 MHz to 4 GHz with 50 ohm input and output impedance. It draws about 75 mA from a +12 V DC supply and has a noise figure of 2 dB at 1.5 GHz, for boosting weak RF signals before a receiver.
Specifications
- Gain
- 20 dB
- Bandwidth
- 1 MHz – 4 GHz
- Supply voltage
- +12 V DC
- Typical current
- 75 mA
- Input and output impedance
- 50 Ω
- Maximum output power
- 20 dBm
- Noise figure
- 2 dB @ 1.5 GHz
- Size
- 32 × 36 mm
Frequently asked questions
How do I power it and what input level should I use?
Power it from +12 V DC, drawing about 75 mA typical. The listing says input signals above 0 dBm cause distortion, so keep the input at or below 0 dBm.
Does the gain stay the same across the band?
No. The listing notes that gain varies with frequency and refers to the S21 curve, so check that curve for your operating band.
