Datasheet Differential Pressure Sensors SDP600/6100 pages

SGNSIRION SDP600 Sries (SDP6xx/5xx) Low-cost Digital Differential Pressure Sensor ■ Accuracy better than 0.2% FS near zero ■ Digital output (I2C) ■ Excellent repeatability, even below 10 Pa ■ Calibrated and temperature compensated ■ Excellent long-term stability ■ Flow measurement in bypass configuration Product Summary The SDP600 sensor family is Sensirion's sries of digital differential pressure sensors designed for high-volume applications. They measure the pressure of air and non-aggressive gases with superb accuracy and no offset drift. The sensors cover a pressure range of up to ±500 Pa (±2 inch H2O / ±5 mbar) and deliver outstanding accuracy even at the bottom end of the measuring range. The SDP600 series operates from a 3.3 Vdc supply voltage and features a digital 2-wire interface, which makes it easy to connect directly to a microprocessor. The signal is internally linearized and temperature compensated. The outstanding performance of these sensors is based on Sensirion's patented CMOSens® sensor technology, which combines the sensor element, signal processing and digital calibration on a tiny microchip. The differential pressure is measured by a thermal sensor element using flow-through technology. Compared with membrane-based sensors, the SDP600 features an extended dynamic range, better long-term stability, and improved repeatability, especially near zero. The well-proven CMOS technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications. Applications Connection diagram ■ Medical ■ HVAC ■ Automotive ■ Process automation ■ Burner control New versions ■ Low pressure versions SDP600/610-125Pa and SDP600/610-25Pa are suited to measure very low and ultra low differential pressure. ■ Low power versions (SDP606/SDP616) are developed especially for low power battery operation. ■ Special calibration to measure a massflow in bypass configuration (SDP601/SDP611). Vdd C (master) VDD 3.3V- SDP600 Series (slave) GND SDP600 series with bidirectional digital communication (I2C bus) Sensor chip The SDP600 series features a fourth-generation silicon sensor chip called SF04. In addition to a thermal mass flow sensor element, the chip contains an amplifier, A/D converter, EEPROM memory, digital signal processing circuitry, and interface. The highly sensitive chip requires only a minuscule amount of gas flow through the sensor. OEM options A variety of custom options can be implemented for high-volume OEM applications. Ask us for more information. www.sensirion.com Version 1.5 -January 2011 1/10