Board Mount Pressure Sensor

AMS 5915 SERIES

© 2022, Analog Microelectronics GmbH

www.analog-micro.com

Datasheet AMS 5915

– Rev. 4.0

7/15

INITIAL OPERATION

Electrical Connection

The electrical connection of AMS 5915 sensors is typically made by soldering them directly on a printed

circuit board or by mounting them on a suitable socket. The basic circuit of the AMS 5915 sensor is shown in

Figure 2. To read data from the digital output, it is enough to connect PIN1 (GND), PIN2 (VCC) and the I2C-

bus lines to PIN3 (SDA) and PIN4 (SCL). Pins 5 to 8 are internally not connected and can be left

unconnected.

Important: For I2C-bus communication, each bus line (SCL and SDA) has to be connected to the positive

supply voltage (pin Vcc or +3.3 V) via a pull-up resistor. Please add pull-up resis

tors (4.7 kΩ are

recommended) to your bus line if they are not integrated in the I2C-master.

Pressure Connection

The pressure connection is established by mounting hoses / flexible tubing on the sensor

’s metal pressure

ports or by sealing the pressure ports of the N-type package via O-rings to a suitable flange. Depending on

the sensor type and the type of measuring pressure, one or two of the pressure ports are connected to the

measuring medium / volume, as described in the table below:

wherein p1 = pressure at port 1 and p2 = pressure at port 2. For port declaration see Figure 5 and Figure 6.

The media compatibility of pressure port 1 and port 2 can be found in

“Specification notes”, 7 and 8.

Notes:

1.

For pressure connections up to 2 bar we recommend a silicone tubing (inner diameter Ø = 2 mm, outer diameter

Ø = 6 mm) and above 2 bar PU or PA tubing. Suitable tubing can be found on

AMS 5915’s product page.

2.

ESD precautions are necessary, it is essential to ground machines and personnel properly during assembly and

handling of the device.

Sensor type

Pressure type to measure

Port 1

Port 2

Requirement

AMS 5915-xxxx-D

differential

connected to p1

connected to p2

p1 ≥ p2

positive gage

connected to p1

open

p1 ≥ pambient

negative gage (vacuum)

open

connected to p2

P2 ≤ pambient

AMS 5915-xxxx-D-I

differential

connected to p1

connected to p2

p1 ≤ p2

positive gage

open

connected to p2

P2 ≥ pambient

negative gage (vacuum)

connected to p1

open

P1 ≤ pambient

AMS 5915-xxxx-D-B

differential (bidirectional)

connected to p1

connected to p2

p1 ≥ p2 or p1 ≤ p2

AMS 5915-xxxx-A

absolute pressure

connected to p1

not connected

p1 = meas. pressure

AMS 5915-xxxx-B

barometric pressure

connected to p1

not connected

p1 = meas. pressure

Figure 2: Principle electric circuitry