Interfaces

• I²C Compatible: Up to 400kHz

Physical Characteristics

• Small Form Factor: Dimensions of 4.5 x 4.5 x 3.5mm (width x length x height)
• SMD Package: 6 leads
• Ceramic Substrate: Ensures robust performance

Detailed Description

The CPS135B is designed for high-precision pressure and temperature measurements with a focus on low power consumption, making it suitable for a wide range of applications, especially those requiring battery operation. Its I²C interface allows for easy integration into various systems without the need for additional external components or complex signal processing by the host microcontroller.

Key Highlights:

1. Integrated 24-bit ADC: Ensures high-resolution pressure measurements.
2. Internal Calibration Logic: Simplifies the integration process by providing ready-to-use digital outputs.
3. Wide Operating Voltage Range: Offers flexibility in different power supply conditions.
4. Low Power Consumption: Efficient power usage with less than 5µA per measurement and less than 200nA in sleep mode.

The CPS135B SIP (System-in-a-Package) solution integrates a resistive bridge type pressure sensor with a 24-bit ADC, providing high-resolution and accurate pressure measurements. This fully calibrated and temperature-compensated digital output simplifies the integration process. The internal calibration logic ensures precise pressure and temperature measurements via the I²C interface, eliminating the need for separate calibration coefficient downloads and complex compensation calculations by the host microcontroller.

Applications

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

Benefits

• Low Power Consumption: Ideal for battery-operated and other low-power applications.
• External Clock Not Required: Simplifies the design and reduces component count.
• High Resistance to Sensing Media: Enhances durability and reliability.

Features

• Factory Calibrated Pressure and Temperature Sensor: Ensures accuracy out of the box.
• Supply Voltage: 2V to 5.5V (3V typical)
• Current Consumption: Less than 5µA per measurement
• Sleep State Current: Less than 200nA at 25°C
• Operating Temperature Range: -40°C to +85°C
• Pressure Accuracy: ±0.3kPa (±3.0mbar) at 25°C
• Temperature Accuracy: ±1.0°C