Overview

The CPS171 is a resistive absolute pressure sensor designed specifically for low-pressure applications, such as Manifold Absolute Pressure (MAP) systems. This sensor features a fully calibrated, pressure-compensated analog output and consists of a resistive MEMS pressure sensor combined with a conditioning ASIC for precise pressure measurements.

Key Features and Components

Resistive MEMS Pressure Sensor: Ultra-small form factor for compact applications.
Conditioning ASIC: Ensures accurate pressure measurements within factory-calibrated ranges.
Integrated Sigma-Delta ADC: Provides a high-level analog output signal proportional to the applied pressure.
Internal Calibration Logic: Enhances measurement accuracy and reliability.

Absolute Ratings

These parameters define the maximum stress conditions the sensor can withstand without incurring permanent damage:

Parameter	Symbol	Conditions	Min	Typ	Max	Units
Over Pressure	—	—	—	—	1000 (10)	kPa (bar)
Supply Voltage (with respect to GND)	VDD	—	-0.3	—	6.0	V
Voltages at Analog I/O - In Pin	VINA	—	-0.3	—	VDD+0.3	V
Voltages at Analog I/O - Out Pin	VOUTA	—	-0.3	—	VDD+0.3	V
Storage Temperature	TSTOR	—	-50	—	130	°C

Operating Conditions

Defines the typical conditions for standard operation of the sensor:

Parameter	Symbol	Conditions	Min	Typ	Max	Units
Supply Voltage to GND1	VS	—	4.75	5.0	5.25	V
Operating Temperature Range	—	—	-40	—	85	°C

Pressure Range Characteristics (CPS171-JW001)

Describes the sensor's performance within its calibrated pressure range:

Parameter	Symbol	Conditions	Min	Typ	Max	Units
Pressure Range 1	—	—	10 (100)	—	115 (1150)	kPa (mbar)
Full Scale Output	VFSO	@VS=5.0V	—	4.7	—	V
Full Scale Span	VFSS	@VS=5.0V	—	4.5	—	V
Accuracy	—	(0 to 85°C)	—	—	±1.5	%VFSS
Sensitivity	V/P	—	—	45	—	mV/kPa

Electrical Parameters

Details the sensor's power consumption and electrical output characteristics:

Parameter	Symbol	Conditions	Min	Typ	Max	Units
Supply Current	IDD	Worst Case Settings: 12-bit, 0ms Power Down	1200	—	1500	µA
Analog Output	—	CPS171, Analog_P 10 to 115kPa (100 to 1150mbar)	0.4	—	4.65	V
Analog Output Resolution	RES	—	—	12	—	Bits
Analog Additional Error	Eout	Including Ratiometricity Error, -40 to 125°C	0.1	—	0.5	%
Trimmed System Frequency	fSYS	All Timing in this Specification are Subject to this Variation	—	1.85	—	MHz
Start-Up Time	tSTA	Power-On to Data Ready, Fastest and Slowest Settings	—	4.25	173	ms
Update Rate (Normal Mode)	TRESP_UP	Fastest and Slowest Settings	—	0.70	288	ms
Peak-to-Peak Noise @ Output	NOUT	100 Measurements in 12-bit	—	—	5	LSB