325401000-00

## MS54XX 

## Miniature SMD Pressure Sensor 

## VRoHS 

## SPECIFICATIONS 

- **1, 7, 12, and 70 bar absolute pressure range** 

- **Uncompensated** 

- **Piezoresistive silicon micromachined sensor** 

- **Miniature surface mount** 

- **Ceramic carrier** 

- **Low noise, high sensitivity, high linearity** 

The MS54XX SMD pressure sensor series is designed for pressure sensor systems with highest demands on resolution and accuracy. The device consists of a silicon micromachined pressure sensor die mounted on a 

6.2 x 6.4 mm ceramic carrier. The MS54XX can be delivered in a high sensitivity version giving a maximal output voltage or in a high linearity version. Both versions provide an output voltage directly proportional to the applied pressure 

|**Carrier**|**Full scale**<br>**pressure**|**High Sensitivity Versions**|**High Sensitivity Versions**|**High Sensitivity Versions**|**High Linearity Versions**|**High Linearity Versions**|**High Linearity Versions**|
|---|---|---|---|---|---|---|---|
|||**Product**<br>**code**|**Full**<br>**scale**<br>**span **|**Linearity**|**Product**<br>**code**|**Full**<br>**scale**<br>**span **|**Linearity**|
|Ceramic|1 bar|MS5401-AM|240 mV|±0.20 % FS|MS5401-BM|150 mV|±0.05 % FS|
||7 bar|MS5407-AM|392 mV|±0.20 % FS||||
||12 bar||||MS5412-BM|150 mV|±0.05 % FS|
||70 bar|MS5470-AM|310 mV|±0.25 % FS||||



SENSOR SOLUTIONS ///MS54XX 

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MS54XX Miniature SMD Pressure Sensor 

## FEATURES 

- Low cost SMD package 

- Small size 

- High reliability, low drift 

- -40 °C to +125 °C operation range 

- Gel protection against humidity and water 

## APPLICATIONS 

- Brake systems 

- High resolution altimeters, variometers 

- Barometers 

- Engine management 

- Waterproof watches and diving computers 

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MS54XX Miniature SMD Pressure Sensor 

## PIN CONFIGURATION 

**==> picture [130 x 99] intentionally omitted <==**

**----- Start of picture text -----**<br>
3: VS+<br>4: OUT+  1: OUT-<br>2: GND<br>**----- End of picture text -----**<br>


## PIN DESCRIPTION 

|PIN DESCRIPTION||**2: GND**|
|---|---|---|
|**Pin Name**|**Pin No**|**Function**|
|OUT-|1|Negative output voltage of Wheatstone bridge|
|GND|2|Ground|
|VS+|3|Supplyvoltage of Wheatstone bridge|
|OUT+|4|Positive output voltage of Wheatstone bridge|



## ABSOLUTE MAXIMUM RATINGS 

|**Parameter**|**Symbol**|**Conditions**|**Min**|**Max**|**Unit**|
|---|---|---|---|---|---|
|Supplyvoltage|VS+|Ta = 25 °C|-|20|V|
|Storage temperature|TS||-40|+125|°C|
|Overpressure MS5401-AM<br>MS5401-BM (1)<br>MS5407-AM (2)<br>MS5412-BM<br>MS5470-AM|P|Ta = 25 °C|-<br>-<br>-<br>-<br>-|5<br>10<br>21<br>30<br>180|bar|



## **NOTES** 

- 1) The MS5401-BM is qualified referring to ISO Standard 2281 and can withstand an absolute pressure of 11 bar in salt water or 100 m water respectively. 

- 2) The MS5407-AM is qualified referring to ISO Standard 2281 and can withstand an absolute pressure of 21 bar in salt water or 200 m water specifically. 

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MS54XX Miniature SMD Pressure Sensor 

## ELECTRICAL CHARACTERISTICS 

## **HIGH SENSITIVITY VERSION** 

||||||(Vs+ = 5 V;|Ta = 25 °C)|
|---|---|---|---|---|---|---|
||**Parameter**|**Min**|**Typ**|**Max**|**Unit**|**Notes**|
|MS5401-AM|Operating pressure range|0|-|1|bar||
||Full-scale span(FS)|190|240|290|mV||
||Sensitivity|190|240|290|mV/bar||
||Linearity|-|±0.15|±0.40|% FS|1,6|
|MS5407-AM|Operating pressure range|0|-|7|bar||
||Full-scale span(FS)|322|392|462|mV||
||Sensitivity|46|56|66|mV/bar||
||Linearity||±0.15|±040|% FS|1,6|
|MS5470-AM|Operating pressure range|0|-|70|bar||
||Full-scale span(FS)|250|310|370|mV||
||Sensitivity|3.6|4.4|5.3|mV/bar||
||Linearity||±0.25|±0.50|% FS|1,6|
|All Ranges|Operatingtemperature range|-40|-|125|°C||
||Zeropressure offset|-40|0|40|mV||
||Pressure hysteresis|-|-|±0.20|% FS|2,6|
||Temperature hysteresis|-|0.3|0.8|% FS|3,6|
||Repeatability|-|-|±0.20|% FS|4,6|
||Bridge resistance|3.0|3.4|3.8|kΩ||
||Temperature coefficient of resistance<br>Temperature coefficient of span<br>Temperature coefficient of offset|+2'400<br>-1'500<br>-80|2'900<br>-1'900<br>-|+3'300<br>-2'300<br>+80|ppm/°C<br>ppm/°C<br>µV/°C|5, 6<br>5, 6<br>5,6|



## **NOTES** 

- 1) Deviation at one half full-scale pressure from the least squares best line fit over pressure range. 

- 2) Maximum difference of output voltage after 1 pressure cycle at any pressure within the operating pressure range. 

- 3) Maximum difference in offset after one thermal cycle from -40°C to +125°C. 

- 4) Same as 2) after 10 pressure cycles. 

- 5) Slope of the end-point straight line from 25°C to 60°C. 

- 6) Not 100% tested. 

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MS54XX Miniature SMD Pressure Sensor 

## ELECTRICAL CHARACTERISTICS (CONT.) 

## **HIGH LINEARITY VERSIONS** 

|**IGH LINEARITY**|**VERSIONS**||||||
|---|---|---|---|---|---|---|
||||||(Vs+ = 5 V;|Ta = 25 °C)|
||**Parameter**|**Min**|**Typ**|**Max**|**Unit**|**Notes**|
|MS5401-BM|Operating pressure range|0|-|1|bar|8|
||Full-scale span(FS)|120|150|180|mV||
||Sensitivity|120|150|180|mV/bar||
||Linearity|-|±0.05|±0.20|% FS|1,6|
|MS5412-BM|Operating pressure range|0|-|12|bar|8|
||Full-scale span(FS)|120|150|180|mV||
||Sensitivity|10|12.5|15|mV/bar||
||Linearity||±0.05|±0.15|% FS|1,6|
|All Ranges|Operatingtemperature range|-40|-|125|°C||
||Zeropressure offset|-40|0|40|mV||
||Pressure hysteresis|-|-|±0.20|% FS|2,6|
||Temperature hysteresis|-|0.3|0.8|% FS|3,6|
||Repeatability|-|-|±0.20|% FS|4,6,7|
||Bridge resistance|3.0|3.4|3.8|kΩ||
||Temperature coefficient of resistance<br>Temperature coefficient of span<br>Temperature coefficient of offset|+2'400<br>-1'500<br>-80|2'900<br>-1'900<br>-|+3'300<br>-2'300<br>+80|ppm/°C<br>ppm/°C<br>µV/°C|5, 6<br>5, 6<br>5,6|



## **NOTES** 

- 1) Deviation at one half full-scale pressure from the least squares best line fit over pressure range. 

- 2) Maximum difference of output voltage after 1 pressure cycle at any pressure within the operating pressure range. 

- 3) Maximum difference in offset after one thermal cycle from -40°C to +125°C. 

- 4) Same as 2) after 10 pressure cycles. 

- 5) Slope of the end-point straight line from 25°C to 60°C. 

- 6) Not 100% tested. 

- 7) MS5412-BM: Max. 0.3% FS 

- 8) This sensor family is optimized for the linearity; it is suitable for applications with higher pressure where the linearity requirement is less critical. 

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MS54XX Miniature SMD Pressure Sensor 

## APPLICATION INFORMATION 

## **GENERAL** 

The MS54XX is a miniaturized absolute pressure sensor series which has been designed as a surface mount device (SMD). Its main advantages are the high performance of the semiconductor sensor and a design which makes it suitable for applications requiring small dimensions and cost efficiency. 

The sensor element of the MS54XX consists of a micromachined silicon membrane with borosilicate glass waferbonded under vacuum to the back side for reference pressure. Implanted resistors make use of the piezo-resistive effect to sense pressure applied to the membrane. The sensor is mounted using a special process allowing best offset stability making the device suitable for direct PCB assembly. 

Typical applications for this miniaturized pressure sensor MS54XX are altitude measurements and the measurement of atmospheric reference pressure in medical and industrial equipment as well as in automotive and household applications, consumer electronics and pneumatics. 

|**Full Scale**<br>**Pressure**|**High Sensitivity Versions**<br>**(MS54XX-AX)**|**High Linearity Versions**<br>**(MS54XX-BX)**|
|---|---|---|
|1 bar|Variometer,Altimeter,Barometer|High End Altimeter,Medical Instrumentation|
|7 bar|Divers Watch,Tire Pressure,Electronic Scale|High End Electronic Scale|
|12 bar||Pneumatic Brake,DivingComputer|
|70 bar|Engine Control,DivingComputer||



## **HUMIDITY, WATER PROTECTION** 

## **MS54XX-XM WITH METAL CAP** 

The MS54XX-AM / - BMXXBA has an anticorrosive and antimagnetic metallic protection cap filled with silicone gel for enhanced protection against humidity. The properties of this gel ensure function of the sensor even when in direct water contact. This feature can be useful for waterproof watches or other applications, where direct water contact cannot be avoided. Nevertheless the user should avoid drying of hard materials like for example salt particles on the silicone gel surface. In this case it is advisable to rinse with clean water afterwards. Special care has to be taken not to mechanically damage the gel. Damaged gel may lead to air entrapment and consequently to unstable sensor signal, especially if the damage is close to the sensor surface. 

The metal cap is fabricated of special anticorrosive alloy in order to avoid any galvanic effects within the end product. The MS5401-BM is qualified referring to the ISO Standard 2281 and can withstand a pressure of 11 bar in salt water. The concentration of the sea water used for the qualification is 41 g of sea salt per 1 litre of DI water. The MS5407-BM satisfies salt-water testing with a pressure capability of 21 bar. 

For underwater operations as specified in ISO Standard 2281 it is important to seal the sensor with a rubber O-ring around the metal cap. Any salt water reaching the contact side (ceramic and pads) of the sensor could lead to permanent damage. Especially for "water-resistant 100 m" watches and for diving computers, it is recommended to provide a stable mechanical pusher from the backside of the sensor; otherwise the overpressure may push the sensor backwards and even deform the electronic board on which the sensor is mounted. 

## **LIGHT SENSITIVITY** 

The MS54XX is sensitive to sunlight (visible and near-infrared spectrum). This is due to the strong photo effect of silicon. As the effect is reversible there will be no damage, but the user has to take care that in the final product the sensor cannot be exposed to direct light during operation as it effects the measurement. This can be achieved for instance by placing mechanical parts with holes in such that light cannot pass. 

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MS54XX Miniature SMD Pressure Sensor 

## **CONNECTION TO PCB** 

The package outline of the module enables the use of a flexible PCB to connect it. This can be important for applications in watches and other special devices, and will also reduce mechanical stress on the device. For applications subjected to mechanical shock, it is recommended to enhance the mechanical reliability of the solder junctions by covering the rim or the corners of MS54XX ceramic substrate with glue or globtop-like material. 

## **SOLDERING** 

Please refer to the application note AN808 for all soldering issues. 

## **CLEANING** 

The MS54XX has been manufactured under clean-room conditions. Each device is inspected for homogeneity and cleanness of the silicone gel. It is therefore recommended to assemble the sensor under class 10 000 or better conditions. Should this not be possible, it is recommended to protect the sensor opening during assembly from entering particles and dust. To avoid cleaning of the PCB, solder paste of type “no-clean” must be used. **Cleaning might damage the sensor.** 

## RECOMMENDED PAD LAYOUT 

Recommended pad layout for soldering of the MS54XX on a printed circuit board 

**==> picture [198 x 142] intentionally omitted <==**

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MS54XX Miniature SMD Pressure Sensor 

## PACKAGE OUTLINES 

## **CERAMIC CARRIER AND METAL CAP** 

**==> picture [240 x 20] intentionally omitted <==**

**----- Start of picture text -----**<br>
Device package outlines of  MS54XX-AM and MS54XX-BM<br>(M = anticorrosive and antimagnetic stainless steel cap)<br>**----- End of picture text -----**<br>


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MS54XX Miniature SMD Pressure Sensor 

## PACKING 

The MS54XX is packed in 51 cm (20-inch) antistatic plastic tubes with rubber end-plugs of different colors: one green and one black. The dot on the carrier next to Pin 1 is facing the green end-plug. Each tube contains 80 sensors. The tubes are marked _"ANTISTATIC"_ and have an information label. See the drawings below for more details. 

## PACKING TUBE OUTLINES 

**==> picture [245 x 84] intentionally omitted <==**

**----- Start of picture text -----**<br>
/ Information label<br>8.2<br>510<br>All measures in mm<br>**----- End of picture text -----**<br>


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MS54XX Miniature SMD Pressure Sensor 

## ORDERING INFORMATION 

|**Product code**|**Product**|**Art. No**|**Package**|**Delivery Form**|
|---|---|---|---|---|
|MS5401-AM|Miniature pressure sensor 1 bar, High<br>sensitivity|325401001-00|Ceramic carrier|Tube|
|||325401001-50|Ceramic carrier|Tape and Reel|
|||325401006-00|Ceramic carrier,<br>without<br>transparentgel|Tube|
|MS5401-BM|Pressure sensor 1 bar, High linearity|325401000-00|Ceramic carrier|Tube|
|||325401000-50|Ceramic carrier|Tape and Reel|
|||325401002-00|Ceramic carrier,<br>without<br>transparentgel|Tube|
|MS5407-AM|Miniature pressure sensor 7 bar, High<br>sensitivity|325407000-00|Ceramic carrier|Tube|
|||325407000-50|Ceramic carrier|Tape and Reel|
|||325407001-00|Ceramic carrier,<br>without<br>transparentgel|Tube|
|MS5412-BM|Pressure sensor 12 bar, High linearity|325412000-00|Ceramic carrier|Tube|
|||325412000-50|Ceramic carrier|Tape and Reel|
|MS5470-AM|Miniature pressure sensor 70 bar,<br>High sensitivity|325470000-00|Ceramic carrier|Tube|



AX = high sensitivity BX = high linearity XM = anticorrosive and antimagnetic metallic cap 

## **NORTH AMERICA** 

Measurement Specialties, Inc., a TE Connectivity Company 45738 Northport Loop West Fremont, CA 94538 Tel:  +1 800 767 1888 Fax: +1 510 498 1578 e-mail: pfg.cs.amer@meas-spec.com Website: www.meas-spec.com 

## **EUROPE** 

## **ASIA** 

Measurement Specialties (Europe), Ltd., Measurement Specialties (China), Ltd., a TE Connectivity Company a TE Connectivity Company Switzerland Sàrl No. 26 Langshan Road Ch. Chapons-des-Prés 11 Shenzhen High-Tech Park (North) Nanshan CH-2022 Bevaix District, Shenzhen, 518057 Tel:  +41 32 847 9550 China Fax: + 41 32 847 9569 Tel:  +86 755 3330 5088 e-mail: sales.ch@meas-spec.com Fax: +86 755 3330 5099 Website: www.meas-spec.com e-mail: pfg.cs.asia@meas-spec.com Website: www.meas-spec.com 

## **TE.com/sensorsolutions** 

Measurement Specialties, Inc., a TE Connectivity company. 

Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred to herein might be trademarks of their respective owners. 

The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or misuse of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application. 

- © 2015 TE Connectivity Ltd. family of companies All Rights Reserved. 

DA54XX_020 000054XX280 ECN1882 

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