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Relative pressure sensor AP3 / AG3
piezoresistivedigitalanalog

relative pressure sensor
relative pressure sensor
relative pressure sensor
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Characteristics

Pressure type
relative
Technology
piezoresistive
Output
analog, digital
Mounting
SMD
Other characteristics
MEMS, with amplified output
Process temperature

Max.: 125 °C (257 °F)

Min.: -40 °C (-40 °F)

Pressure range

Max.: 12 bar (174.05 psi)

Min.: 0 bar (0 psi)

Description

PEWATRON launched the new A3 series of gauge pressure sensors from Fujikura. The AG3 and AP3 series are compatible in footprint and pin configuration with the highly successful F and X series, but with better total accuracy performance (< +/-1.5%) and a very low noise output. The analog AG3 & AP3 series is a two-chip system consisting of a MEMS sensor chip and a signal-conditioning chip. The signal conditioning IC does not have A/D and D/A converter steps in the gain amplifier, and the amplification is designed with a very low noise output. As a unique function, the AG3 and AP3 also have single point pressure threshold detection. Analog output from the pressure measurement and a threshold voltage are supplied to an internal comparator that compares the two voltages. The digital output isa comparison results. One very popular application of the AG3 and AP3 series is for high-end non-invasive blood pressure (NiBP) monitoring devices, where the low noise amplification gives a huge benefit across the whole range of measured blood pressures. With proper filtering the peak to peak noise is well below 0.02 mmHg. Another application of growing importance is the single point pressure threshold detection option. This function allows the design of very small and cheap pressure switches and activates a switch or detects activity. This is very important for applications with space restrictions or for small, lightweight constructions where pressure is monitored.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.