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If you have more questions or need further information on how to integrate the CPS121 into your projects, feel free to ask!
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
ELECTRICALPARAMETERS
Overview
The CPS121 system-in-a-package (SIP) solution includes a resistive bridge pressure sensor and a 24-bit ADC, providing high resolution and precise pressure measurements. Its fully calibrated and temperature-compensated digital output simplifies integration, making it easy to use. The sensor’s internal calibration logic eliminates the need for external calibration coefficients and compensation calculations by the host microcontroller.
Key Features
Factory Calibrated: Provides accurate pressure and temperature measurements directly.
Digital Output: Pressure and temperature data available via I²C interface.
Low Power Consumption: Suitable for battery-powered applications.
No External Clock Required: Simplifies system design.
High Media Resistance: Robust against various sensing media.
Electrical Characteristics
Supply Voltage: 2V to 5.5V (typically 3V)
Average Current Consumption: <5 µA per measurement
Sleep State Current Consumption: <200 nA at 25°C
Operating Temperature Range: -40°C to +85°C
Measurement Characteristics
Pressure Absolute Accuracy: ±0.1 kPa (±1.0 mbar) from 0°C to 50°C, 95 kPa to 105 kPa
Pressure Relative Accuracy: ±0.01 kPa (<1 meter)
Temperature Accuracy: ±1.0°C
Interfaces
I²C Interface: Supports data rates up to 400 kHz
Physical Characteristics
Form Factor: Compact size of 3 x 5 x 1.2 mm (w x l x h)
