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LDE Series

Digital low differential pressure sensors

www.first-sensor.com

www.sensortechnics.com

FEATURES

· Pressure ranges from 25 to 500 Pa (0.1 to 2 inH

· Pressure sensor based on thermal micro-flow

measurement

· High flow impedance

→

→

→

→

→ very low flow-through leakage

→

→

→

→

→ high immunity to dust and humidity

→

→

→

→

→ no loss in sensitivity using long tubing

· Calibrated and temperature compensated

· Unique offset autozeroing feature ensuring

superb long-term stability

· Offset accuracy better than 0.2 %FS

· Total accuracy better than 0.5 %FS typical

· On-chip temperature sensor

· Analog output and digital SPI interface

· RoHS and REACH compliant

· Quality Management System according to

EN ISO 13485 and EN ISO 9001

MEDIA COMPATIBILITY

Air and other non-corrosive gases

SPECIFICATIONS

Maximum ratings

Supply voltage V

S

LDE...3...

2.70 ... 3.60 V

DC

LDE...6...

4.75 ... 5.25 V

DC

Output current

1 mA

Lead specifications

Average preheating temperature gradient

2.5 K/s

Soak time

ca. 3 min

Time above 217 °C

50 s

Time above 230 °C

40 s

Time above 250 °C

15 s

Peak temperature

260 °C

Cooling temperature gradient

-3.5 K/s

Temperature ranges

Compensated

0 ... +70 °C

Operating

-20 ... +80 °C

Storage

-40 ... +80 °C

Humidity limits (non-condensing)

97 %RH

20 g

500 g

10 9 8 7 6

1 2 3 4 5

Specification notes:

1.

Sweep 20 to 2000 Hz, 8 min, 4 cycles per axis, MIL-STD-883, Method 2007.

2.

5 shocks, 3 axes, MIL-STD-883E, Method 2002.4.

3.

The maximum voltage applied to pin 1 and pins 6 through 10 should not exceed V

There are three use cases that will change

the manner in which the LDE sensor is

connected in-circuit. For detailed pin

connections see page 12.

n

i

Pn

o

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t

c

n

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F

1d

e

v

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e

s

e

R

3D

N

G

4t

u

o

V

5t

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o

V

6K

L

C

S

7I

S

O

M

8O

S

I

M

9S

C

/

0

1d

e

v

r

e

s

e

R

Top-down view