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MICRF300

MICRF300: 100MHz to 1000MHz, 1.8 to 3.6V Low-Noise Amplifier with Shutdown

Key Features
  • 1.8V to 3.6V supply voltage range
  • 2.5mA operating supply current
  • 1μA (Max) shutdown current over temperature
  • 18.3dB gain at 315MHz/433.92MHz
  • 1.15dB noise figure at 315MHz/433.92MHz
  • -25dBm input P1dB compression point at 433.92MHz
  • -40°C to +125°C operating temperature range
  • Small 6-pin SC70 package
Typical Application



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Applications
  • Security systems
  • Remote keyless entry (RKE)
  • Tire pressure monitoring (TPMS)
  • Automated meter reading (AMR)
  • Garage door openers (GDO)
  • Remote weatherstations


General Description

The MICRF300 is a low-noise amplifier (LNA) with low-power shutdown mode, which operates over the 100MHz to 1000MHz frequency band. The device is targeted for low-power, low-data rate applications at 315/433MHz, achieving a low 1.2dB noise figure with 18dB of gain, helping to improve receiver noise figure and sensitivity. The device also performs well at 868/915MHz, achieving 13dB of gain and a noise figure of 1.7dB. The device requires a simple input matching network and output matching network to optimize performance for the desired frequency band.

The MICRF300 operates over the 1.8V to 3.6V voltage range. Consuming a low 2.5mA of supply current during operation and a typical 50nA of shutdown current, the MICRF300 is an ideal solution for battery powered equipment. The device is available in 6-pin SC70 package and is rated to operate over the -40°C to +125°C temperature range.

Ordering Information
Part Number Temperature Range Package
MICRF300YC6 -40°C to +125°C SC70-6

1. Under bar symbol (_) may not be to scale.

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