Datasheet

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Data Sheet

The MiCS-4514 is a compact MOS sensor with two fully

independent sensing elements on one package.

The MiCS-4514 is a robust MEMS sensor for the

detection of pollution from automobile exhausts.

MiCS-4514

0278 rev 16

SGX Sensortech, Courtils 1

CH-2035 Corcelles-Cormondrèche

Switzerland

www.sgxsensortech.com

For more information please contact:

info.em@sgxsensortech.com

Features

• Smallest footprint for compact designs

(5 x 7 x 1.55 mm)

• Robust MEMS sensor for harsh environments

• High-volume manufacturing for low-cost

applications

• Short lead-times

Detectable gases

• Carbon monoxide CO 1 – 1000ppm

• Nitrogen dioxide NO

0.05 – 10ppm

• Ethanol C

OH 10 – 500ppm

• Hydrogen H

1 – 1000ppm

• Ammonia NH

1 – 500ppm

• Methane CH

>1000ppm

0.01

0.10

1.00

10.00

100.00

0.01 0.1 1 10 100

Concentration [ppm]

Rs/R0

Hydrogen

NO2

RED sensor, continuous power ON, 25°C, 50% RH

OX sensor, continuous power ON, 25°C, 50% RH

0.01

0.10

1.00

10.00

0.1 1 10 100 1000 10000 100000

Concentration [ppm]

Rs/R0

Ethanol

Hydrogen

Methane

Propane

Iso-butane

Ammonia

0.01

0.10

1.00

10.00

0.1 1 10 100 1000 10000 100000

Concentration [ppm]

Rs/R0

Ethanol Hydrogen

Methane

Propane

Iso-butane

Ammonia

H2S

Page 1 of 5

Summary of content (6 pages)

PAGE 1
MiCS-4514 0278 rev 16 Data Sheet The MiCS-4514 is a compact MOS sensor with two fully independent sensing elements on one package. The MiCS-4514 is a robust MEMS sensor for the detection of pollution from automobile exhausts. 10.00 10.00 Ethanol Features CO CO Hydrogen 1.00 1.00 Rs/R0 Rs/R0 • Smallest footprint for compact designs (5 x 7 x 1.
PAGE 2
MiCS-4514 0278 rev 16 Data Sheet Performance RED sensor Characteristic RED sensor Symbol Typ Min Max Unit Sensing resistance in air (see note 1) R0 - 100 1500 kΩ Typical CO detection range FS 1 1000 ppm Sensitivity factor (see note 2) S60 - 1.2 50 - Symbol Typ Min Max Unit Sensing resistance in air (see note 1) R0 - 0.8 20 kΩ Typical NO2 detection range FS 0.
PAGE 3
MiCS-4514 0278 rev 16 Data Sheet MiCS-4514 with recommended supply circuit (top view) Power circuit and measurement circuit RDRED is a 82 Ω and RDOX is a 133Ω. These resistors are necessary to obtain the right temperatures on the two independant heaters while using a single 5V power supply. The resulting voltages are typically VHRED = 2.4V and VHOX= 1.7V.
PAGE 4
Data Sheet MiCS-4514 0278 rev 16 Package outline dimensions The package is compatible with SMD assembly process. Pin Connection A Rh1 OX B Rs1 OX C Rh1 RED Rs1 RED Operating Dconditions E NC The heating power is typically 80 mW and 43 F and Rh2OX RED mW for the RED sensor respectively. Heating voltage and 1.7 V. G is 2.35 Rs2 RED Heating current is 34 and 26 mA. H Rh2 OX Heating resistance at nominal power is 74 and J Rs2 OX 66 ohm.
PAGE 5
Data Sheet MiCS-4514 0278 rev 16 Power circuit The two resistors (82 ohm for RED and 51+82 Packaging ohm for OX) are necessary to obtain the right The sensors are in a tape andheaters reel for temperatures onpackaged the two independent expedition. while using a 5V power supply. The sensors are placed in a carrier type. The dimensions of the cavity are 5.5 x 7.5 x 2.55 mm (the tolerance is +/- 0.2 mm). The outside dimension of the reel is either 178 +- mm (for a maximum of 700 sensors ) or 330 + 0.
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