US9011-300-8 Silicon Pressure Sensor (US9011 Series Pressure Sensor)

The US9011-300-8 Silicon Pressure Sensor is a piezoresistive pressure sensing device designed to measure gas pressure and convert it into an electrical signal. It belongs to the US9011 series, which uses a silicon diaphragm and Wheatstone bridge structure for accurate and stable pressure measurement.

This variant is configured for a 300 psi pressure range and typically comes in an SMD or SO8 package with an open bridge output, requiring external signal conditioning for precise measurement.

Key Features

• Silicon Piezoresistive Pressure Sensor
• 300 psi Pressure Range variant
• Open Bridge Output for external amplification
• High Sensitivity millivolt level output
• Low Cost and Compact SMT Package
• Supports Constant Voltage or Constant Current excitation
• Suitable for air and non corrosive gases

Specifications

• Sensor Type: Silicon piezoresistive pressure sensor
• Pressure Range: 300 psi
• Output Type: Wheatstone bridge millivolt output
• Excitation Voltage: approx 5V to 10V
• Excitation Current: approx 1mA to 2mA
• Bridge Resistance: approx 4k to 6k ohm
• Span Output: approx 120 to 180 mV at full scale
• Linearity: approx ±0.3 percent FS
• Operating Temperature: -40 to 125 degree C
• Pressure Medium: Air or non corrosive gas
• Package Type: SO8 or SMT

Applications

• Industrial pressure measurement
• Tire pressure monitoring
• Weather and altitude sensing
• Medical instrumentation
• Pressure gauges and control systems
• Home appliances and HVAC

Pin Configuration (Typical SO8 Open Bridge)

• S+ positive bridge output
• S- negative bridge output
• Excitation pins supply
• Ground pins

Working Principle

• ضغط applied to silicon diaphragm
• Resistance of piezoresistors changes
• Wheatstone bridge produces voltage output
• Output proportional to applied pressure