Accurate high resolution digital low pressure sensor

20th June 2019

Alex Lynn

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Whitepaper

All Sensors Corporation of Morgan Hill, California, has announced a brand new, low pressure sensor, the DLLR Series. This new device series offers design engineers exceptional performance for pressure ranges of twn and 30 inH2O. The DLLR Series features Total Error Band and accuracy.

This new product family offers a fully customisable, turn-key solution for design engineers looking for digital pressure solutions requiring exceptional accuracy. Product highlights include automatically selected I2C or SPI output interfaces with 16/17/18 bit resolution and typically better than ±0.05% FSS BFSL Linearity + Hysteresis error.

The DLLR Series utilises All Sensors’ proprietary CoBeam2 TM Technology, allowing for greater sensitivity while reducing package stress and almost eliminating position sensitivity with All Sensors’ robust and ultra stable dual die technology. With the ability to operate at a low, variable supply voltage from 1.68 to 3.6V, and an idle power of less than 1µW; the DLLR Series is a good fit for power conscious designs.

Given that the part can operate directly from a battery with excellent performance, the product family is well suited for portable applications. Devices are available in ten and 30 inH2O (2,488 and 7,465 Pa) pressure ranges, gauge 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

Accuracy: Better than ±0.05% FSS BFSL Linearity + Hysteresis typical.
Digital I2C or SPI interface offered as a standard feature.
16/17/18 bit options available.
No external components required.
Low and variable supply voltage from 1.68 to 3.6V.
All Sensors’ CoBeam2 TM Technology.
Total error band 0.10% typical, Maximum 0.25% and better.
Compensated temperature range: 0 to 70°C.

Well suited 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.