Digital Miniature Ultra-Low Pressure Sensors Offer I²C and Analog Output at the Same Time

Sensortechnics’ HCLA pressure sensors measure ultra-low gage or differential pressures from 2.5 mbar Full Scale. The sensors perform precision digital signal conditioning and achieve very high accuracies. The HCLA series provides a digital I²C bus interface plus an analog 0.5 … 4.5 V output signal at the same time. This offers OEM customers increased design flexibility, e.g. in order to build up a redundancy functionality for safety critical applications. The sensors can directly communicate with microcontrollers without the need for additional A/D converters. Further, digital SPI bus and custom specific outputs are available on request.

HCLA pressure sensors use a special compensation technique to achieve a very high offset stability and virtually no position sensitivity. Together with an optional 3 V supply (standard 5 V) the sensors are therefore ideal for battery powered portable or handheld devices. A wide range of miniature single inline and SMT housing options allows for flexible and space-saving PCB-mounting. All HCLA pressure sensors can be modified according to customer specific requirements, e.g. with respect to pressure range, resolution and internal digital settings.

Important features of the HCLA series are:

• Ultra-low pressure ranges from 2.5 mbar Full Scale
• I²C bus and analog output at the same time
• Optional 3 V power supply (standard 5 V)
• Miniature single inline and SMT housing options

Typical applications of the HCLA pressure sensors include medical devices, instrumentation, environmental controls and HVAC.