Digital Output Pressure Sensor CPS121 Working Temperature Range:- 40 ° C To+85 ° C Pressure Accuracy: ± 0.1kPa (± 1.0mbar) @ 0 ° C To 50 ° C, 95kPa To 105kPa
The CPS121 system-in-a-package (SIP) offers an efficient and accurate solution for precise pressure and temperature measurements, with a focus on low power consumption and easy integration. Here's a concise breakdown of the key electrical parameters and features:
Key Features:
- Factory Calibrated: Accurate pressure and temperature readings without the need for additional calibration.
- Digital Output via I²C: Seamless integration through a simple I²C interface.
- Low Power Consumption: Ideal for battery-powered devices, minimizing energy usage.
- No External Clock: Simplifies design and reduces complexity.
- High Media Resistance: Durable against a variety of media, ensuring reliable performance.
Electrical Characteristics:
- Supply Voltage: 2V to 5.5V (typically 3V), which accommodates a wide range of applications.
- Average Current Consumption: < 5 µA per measurement, ensuring minimal power draw.
- Sleep State Current Consumption: Extremely low at < 200 nA at 25°C for energy-saving during idle times.
- Operating Temperature Range: -40°C to +85°C, providing reliable operation in diverse environments.
Measurement Characteristics:
- Pressure Absolute Accuracy: ±0.1 kPa (±1.0 mbar) for pressures between 95 kPa and 105 kPa, within the 0°C to 50°C range.
- Pressure Relative Accuracy: ±0.01 kPa, providing high-precision measurements even for small variations (e.g., <1 meter).
- Temperature Accuracy: ±1.0°C, ensuring reliable temperature readings.
Interfaces:
- I²C Interface: Supports data rates up to 400 kHz, ensuring fast data transfer for real-time measurements.
Physical Characteristics:
- Form Factor: Compact 3 x 5 x 1.2 mm (width x length x height), making it suitable for space-constrained designs.
- Package: 8-lead LGA package, easy to integrate into existing systems.
- Sensing Port: Top-side sensing, which helps with easy implementation in various devices.
Applications:
- Smartphones: Adds environmental sensing capabilities for user-centric features.
- Wearables: Useful in health and fitness tracking by monitoring atmospheric pressure and altitude.
- Altimeters: Provides accurate altitude measurement for aviation, hiking, and other outdoor applications.
- Barometers: Useful in both portable and stationary applications to monitor atmospheric pressure.
- Weather Stations: Essential for precise meteorological data collection.
- GPS Applications: Enhances altitude data to improve positioning accuracy.
- Hard Disk Drives (HDD): Ensures optimal performance by monitoring internal pressure.
- Industrial Equipment: Can be used for pressure monitoring and control in various industrial processes.
- Air Control Systems & Vacuum Systems: Ensures efficient air flow and pressure management in controlled environments.
Benefits:
- Low Power Consumption: Perfect for battery-powered devices, maximizing operational life.
- No External Clock Needed: Simplifies the design process and reduces complexity.
- Durability: High resistance to different sensing media ensures longevity and robustness in varied environments.
This device is a versatile solution for applications requiring high precision in pressure and temperature measurements, with a strong focus on power efficiency and ease of integration.
Parameter | Symbol | Conditions | Min | Typ | Max | Units |
Supply Current | | | | | | |
- Average | Iavg | VDD = 3V, one conversion per second | | 3.95 | | µA |
- During Conversion | Isc | VDD = 3V, sensor active | | 1.5 | | mA |
- Standby (no conversion) | Iss | VDD = 3V, sensor in standby mode | | | 0.2 | µA |
Analog to Digital Converter | | | | | | |
- Resolution | rADC | | | 24 | | Bit |
I2C Interface | | | | | | |
- Clock Frequency | FC,I2C | | | | 400 | kHz |
