DLHR Series High-Resolution, Low-Pressure Sensor

All Sensors Corp. has announced a brand new low pressure sensor, the DLHR series. This new devices series reportedly offers design engineers superior performance over lower pressure ranges of 0.5 to 60 inH2O, compared to the DLH. The DLHR series provides higher resolution than any other fully compensated low-pressure sensor on the market, according to the company.

Like the DLV/DLVR, all error compensation is performed internally by an advanced ASIC so no external calculation is required. The DLHR Series is a low-pressure sensor with a high-resolution digital output signal that incorporates our ultra stable dual die technology.

This offers a fully customizable, turnkey solution for design engineers looking for digital pressure solutions. Product highlights include either I2C or SPI output interfaces with 16/17/18 bit resolution, and better than 0.25 percent FSS BFSL accuracy. The DLHR Series utilizes All Sensors’ proprietary CoBeam2 TM technology, allowing greater sensitivity while reducing package stress and almost eliminating position sensitivity. With the ability to operate at a low, variable supply voltage from 1.68V to 3.6V, the DLHR series renders itself a power-conscious device, well-suited for portable applications. This has further implications that the part can operate directly from a battery with excellent performance. Devices are available in 0.5, 1, 2, 5, 10, 20, 30 and 60 inH2O pressure ranges, gage and differential.

Package Features
Miniature package with SIP and DIP lead configurations
PC board mountable SMT and through hole configurations
Multiple port options available

Product and Electrical Features
Digital I2C or SPI interface offered as a standard feature
16/17/18 bit options available
No external components or calculations required
Low and variable supply voltage from 1.68V to 3.6V
All Sensors’ CoBeam2 TM Technology
Accuracy better than 0.25 percent FSS BFSL
1 percent total error band (maximum)
Compensated temperature range: 0° C to 70° C or -20° C to 85° C

Applications for this device are: medical devices associated with low pressure, portable devices, battery operated devices, remote sensing, HVAC applications, spirometry, instrumentation, respiratory machines, and industrial controls.