Fully Compensated Temperature Pressure Sensor In Medical Application

CPS123 Features fully compensated temperature and pressure output Low power consumption

Physical Characteristics

• Small Form Factor, 2.5 x 2 x 1mm (w x l x h)
• LGA Package, 8 Lead

Interfaces

• I²C ^TM* Compatible (≤400kHz)

Features

• Factory Calibrated Pressure and Temperature Sensor
• Supply Voltage: 2V to 5.5V
• Current Consumption: <5uA
• Sleep State Current: <200nA (25°C)
• Operating Temperature Range: -40°C to +85°C
• Pressure Accuracy: <±0.2kPa (<±2.0mbar) @ 25°C
• Temperature Accuracy: ±1.0°C
• Altitude Resolution Better Than 1.0 meter (50cm) in Active Mode

• Top Side Sensing Port

Benefits

• Low Power Consumption. Excellent for Battery and Other Low-Power Applications
• External Clock not Required
• High Resistance to Sensing Media

Applications

• Altimeters
• Portable and Stationary Barometers
• Weather Stations
• GPS Applications
• Hard Disk Drives(HDD)
• Industrial Equipment
• Air Control Systems
• Vacuum Systems

Overview

The CPS123 SIP (System-in-a-Package) solution comprises of a resistive bridge type pressure sensor and a 24-bit ADC for high resolution and accurate pressure measurements. The fully calibrated pressure and temperature compensated digital output makes the CPS123 solution simple to use. The ADC comprise of an internal calibration logic that provides accurate pressure and temperature measurements to the application via the I²C interface. There is no need to separately download internal calibration coefficients and have the host micro-controller conduct complicated compensation calculations.