By incorporating the CPS122, users can achieve reliable, precise pressure measurements while minimizing power consumption and simplifying system design.

Product Description: CPS122 Pressure Sensor

The CPS122 is a highly accurate, low-power pressure sensor system-in-a-package (SIP) designed for a wide range of applications. It combines a resistive bridge-type pressure sensor with a 24-bit ADC, delivering high-resolution pressure measurements. The sensor is factory-calibrated for both pressure and temperature, ensuring ease of use without requiring additional calibration by the host microcontroller.

Operation Modes

The CPS122 is initially programmed to Sleep Mode, in which it remains asleep until a measurement request (MR) is received from the master/host. Upon receiving an MR command, the CPS122 wakes up, completes a measurement cycle, stores the data in internal registers, and then returns to sleep mode.

Physical Characteristics

• Size: 3 x 3 x 1.2 mm (W x L x H)
• Package: LGA, 8 Lead
• Sensing Port: Top side

Overview

• Sensor Type: Resistive bridge pressure sensor
• ADC: 24-bit for high resolution
• Output: Digital, fully calibrated for pressure and temperature
• Interface: I²C, simplifying integration and reducing the need for complex compensation calculations

Benefits

• Low Power Consumption: Ideal for battery-powered applications
• No External Clock Required
• High Resistance to Sensing Media: Ensuring durability and reliability

Features

• Factory Calibrated: Pressure and temperature sensor
• Supply Voltage: 2V to 5.5V (3V typical)
• Current Consumption: <5µA (one measurement), <200nA in sleep state (25°C)
• Operating Temperature Range: -40°C to +85°C
• Pressure Accuracy: ±0.1 kPa (±1.0 mbar) at 0°C to 50°C, 95 kPa to 105 kPa
• Relative Pressure Accuracy: ±0.01 kPa (<1 m)
• Temperature Accuracy: ±1.0°C

Interfaces

• I²C: Up to 400 kHz

Applications

• Smartphones
• Wearables
• Altimeters
• Portable and stationary barometers
• Weather stations
• GPS applications
• Industrial equipment
• Air control systems
• Vacuum systems

Electrical Parameters