Pусский 
PC28D Differential Pressure Sensor
Features
■ Pressure ranges from ±125Pa to ±100kPa
■ Compensated 14-bit digital pressure output and 11-bit digital temperature output
■ I2C interface
■ 3.3V power supply
■ Package size is 10mm x 10mm
Applications
■ Medical breathing
■ Industrial controls
■ HVAC
■ Environmental controls
■ Portable equipment
Overview
The PC28D series are high precision MEMS sensor family offers state-of-the-art pressure transducer technology to produce a digital output, fully conditioned, multi-order pressure and temperature compensated outputs. This series provides JEDEC standard SOIC-16 package with the dual vertical ports. It is available in differential, asymmetric differential configurations. With the dual ports, a reference measurement is possible to minimize errors due to changes in ambient pressure. Combining the pressure sensor with a signal-conditioning ASIC in a single package simplifies the use of advanced silicon micro-machined pressure sensors. The pressure sensor can be mounted directly on a standard printed circuit board, calibrated pressure signal can be acquired from the digital interface. This eliminates the need for additional circuitry, such as a compensation network or microcontroller containing a custom correction algorithm. This series is intended for use with non-corrosive, non-ionic working fluids such as air and dry gases.
Product Parameters
Standard pressure ranges |
inH20/cmH2O Pressure Products
Device | Operating range | Proof pressure | Burst pressure |
PC28D-001ND/G | ±1 inH2O / 0 to 1 inH2O | 10kPa | 30kPa |
PC28D-002ND/G | ±2 inH2O / 0 to 2 inH2O | 10kPa | 30kPa |
PC28D-005ND/G | ±5 inH2O / 0 to 5 inH2O | 10kPa | 30kPa |
PC28D-010ND/G | ±10 inH2O / 0 to10 inH2O | 25kPa | 75kPa |
PC28D-020ND/G | ±20 inH2O / 0 to 20 inH2O | 25kPa | 75kPa |
PC28D-030ND/G | ±30 inH2O / 0 to 30 inH2O | 50kPa | 150kPa |
PC28D-010CC/D | -0.5~10cmH2O / -10~10cmH2O | 10kPa | 15kPa |
PC28D-020CC/D | -1~20cmH2O / -20~20cmH2O | 10kPa | 15kPa |
PC28D-040CC/D | -5~40cmH2O / -40~40cmH2O | 25kPa | 50kPa |
PC28D-100CC/D | -5~100cmH2O / -100~100cmH2O | 50kPa | 100kPa |
STD. Pressure Products | |||
Device | Operating range | Proof pressure | Burst pressure |
PC28D-125PD | ±125Pa | 10kPa | 30kPa |
PC28D-250PD/G | ±250Pa / 0 to 250Pa | 10kPa | 30kPa |
PC28D-500PD/G | ±500Pa / 0 to 500Pa | 10kPa | 30kPa |
PC28D-001KD/G | ±1kPa / 0 to 1kPa | 10kPa | 30kPa |
PC28D-002KD/G | ±2kPa / 0 to 2kPa | 10kPa | 30kPa |
PC28D-005KD/G | ±5kPa / 0 to 5kPa | 25kPa | 50kPa |
PC28D-010KD/G | ±10kPa / 0 to 10kPa | 50kPa | 100kPa |
PC28D-015KD/G | ±15kPa / 0 to 15kPa | 50kPa | 100kPa |
PC28D-035KD/G | ±35kPa / 0 to 35kPa | 70kPa | 105kPa |
PC28D-040KD/G | ±40kPa / 0 to 40kPa | 80kPa | 120kPa |
PC28D-100KD/G | ±100kPa / 0 to 100kPa | 200kPa | 300kPa |
PC28D-005SD | ±5psi | 70kPa | 105kPa |
PC28D-015SD | ±15psi | 200kPa | 300kPa |
Performance characteristics | |||||
Parameter | Min | Typ | Max | Unit | Note |
Compensation Temperature, from -10℃ to 60℃ | |||||
Pressure TEB | -1.0 | 1.0 | %FSS | Note(1) | |
Pressure TEB (125pa and 250pa) | -2.5 | 2.5 | %FSS | Note(1)(5) | |
Pressure Accuracy | ±0.25 | %FSS | Note(2) | ||
Temperature Accuracy | 3 | ℃ | Note(3) | ||
Note: (1) TEB values are valid only at the calibrated supply voltage.
(2) The maximum deviation from a best fit straight line(BFSL) fitted to the output measured over the pressure range at 25C. Includes all errors due to pressure non-linearity, hysteresis, and non-repeatability.
(3) The deviation from a best fit straight line(BFSL) fitted to the output measured over the compensated temperature range.
(4) This product can be configured for custom OEM requirements, contact factory for lower power consumption or higher accuracy.
(5) For 125Pa and 250Pa pressure range.
(6) For errors beyond the compensated temperature range, see Extended Temperature Multiplier chart as below.
Functional block diagram |
Electrical specifications | ||||||
Electrical characteristics DC characteristics @VDD=3.3V, T=25℃ unless otherwise noted | ||||||
Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
Operation supply voltage | VDD | 2.7 | 3.3 | 5.5 | V | |
Operation temperature | TOP | -20 | 85 | ℃ | ||
Compensated temperature | Tco | -10 | 60 | ℃ | ||
Load resistance | RL | 10 | kΩ | |||
Supply current | Idd | 3.0 | mA | |||
Output pressure resolution | 14 | Bits | ||||
Output temperature resolution | 8 | 11 | Bits | |||
Update time | 0.5 | mS | ||||
Startup time | 8.4 | mS | ||||
Serial data clock frequency | fSCLK | I2C protocol | 100 | 400 | kHz | |
Digital input high voltage | VIH | 0.8 | 1 | %VDD | ||
Digital input low voltage | VIL | 0 | 0.2 | %VDD | ||
Input capacitance | CIN | 4.7 | pF | |||
Weight | 3 | grams | ||||
Absolute maximum rating | ||||||
Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
Supply voltage | VDD | -0.3 | 5.5 | V | ||
Interface voltage | VIF | -0.3 | VDD+0.3 | V | ||
Storage temperature range | TSTG | -40 | 125 | ℃ | ||
ESD rating | Human body model | -2 | +2 | kV | ||
Solder temperature | 250°C, 5 sec max. | |||||
Stresses above those listed as “absolute maximum ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device under these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. | ||||||
Function descriptions |
General description
The PC28D series consists of a piezo-resistive sensor and a sensor interface I²C. The main function of the I²C is to convert the uncompensated analogue output voltage from the piezo-resistive pressure sensor to a 14-bit digital value, as well as providing a 11-bit digital value for the temperature of the sensor, and compensates them by a patented algorithm. The fully-compensated values can be read out by external MCU.
Factory calibration
Every sensor is individually factory calibrated for sensitivity and offset for both of the temperature and pressure measurements; further calibrations are not necessary to be done by the user.
Sensor output conversion
The sensor is programmed for the fastest update rate, conversions will continue to happen after the power-up sequence. Customer just needs to read sensor without other operations.
Serial interface
The PC28D provides I²C interface for serial communication.
For more details, please download the datasheet for viewing.
Production process
Testing Equipment
Certificate
Company profile
Nanjing Wotian Technology Co., Ltd. was established in 2005. It is an outstanding top sensor mkanufacturing enterprise in Jiangning District. The company was rated as Nanjing Engineering Technology Research Center and Nanjing. Municipal Engineering Research Center, Nanjing Enterprise Technology Center, Nanjing Postdoctoral Innovation Demonstration Base; is the unit that formulated the national standards for "Silicon Piezoresistive Pressure Sensitive Chips" and "Silicone Pressure Sensors". It is the leading domestic manufacturer of pressure sensors, with core technology of diffused silicon pressure sensor pressure transmitter, level sensor and temperature sensor and existing staff 305. The annual production of pressure sensors is more than 2 million. The products have been exported to more than 70 countries and regions. Nanjing Wotian was awarded the honorary title of "Sensor Application Program Demonstration Enterprise" by the Ministry of Industry and Information Technology in 2019. "Creating value for customers" is the goal that enterprises always pursue. As leading manufacturer in the domestic pressure sensor industry, the company will revitalize China's pressure sensor business as its own responsibility, work diligently, step by step, strive to make pressure sensors better, and provide customers with cost-effective sensors. Nanjing Wotian Technology Co., Ltd. has passed ISO9001-2015 quality management system certification and TS16949 certification for the automotive industry.
Company advantage
Mass production
We have one production center in Nanjing and one production center in Anshan with 20,000㎡plant and 170 units of production equipments. The main annual capacity of sensors is about 2,000,000 pieces.
Imported equipments
We imported 20 sets of pressure controller and 150 units of testing ovens to our production line.
Informatization management
We have the information management system of CRM, PLM, ERP, MES and DINGDING etc.
Comprehensive testing
We have our own lab and testing equipment such as lightning stroke, surging, static electricity, vibration, high-low temperature impact test and helium mass-spectrum leak detection.
