E VALUATION B OARD M ANUAL D IFFERENTIAL P RESSURE S ENSOR Evaluation board order code Sensor order code 25132545xxx91 25131308xxx01 V ERSION 1.
Revision history Manual version Product version 1.0 1.0 Notes • Initial release of the manual Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91 User manual version 1.0 www.we-online.
Abbreviations Abbreviation 2 Description I C Inter integrated circuit MEMS Micro electro mechanical system Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91 User manual version 1.0 www.we-online.
Contents 1 General description 1.1 Introduction . . . . . 1.2 Ordering Information 1.3 Material Contents . . 1.4 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 4 5 6 2 Functional description 2.1 Evaluation board in operation . . 2.1.1 Pin header connection . 2.1.2 Analog Output . . . . . . 2.1.
1 General description 1.1 Introduction This evaluation board provides a straightforward and cost-effective option to test and evaluate the differential pressure sensors from Würth Elektronik eiSos. It can be connected to the host controller (e.g. Arduino) using I2 C interface pins. Through hole pin header connections allow the board to be mounted on a bread board.
1.3 Material Contents • 1 differential pressure sensor board: With digital I2 C and analog output; Includes all necessary de-coupling capacitors and SMT pin header • 1 Adapter: With barbed nozzles that can fit the pneumatic tubes with inner diameter 4 mm. (recommended tube: Festo PUN-6x1-XX) • 2 O-rings: 1.8 x 2 mm rubber (NBR-70) O-ring for sealing • 2 Snap-rivets or Screws: Provides quick and robust connection of the adapter with the PCB.
1.4 Assembly Adapter O-rings Sensor board Snap-rivets Figure 3: Assembly of the evaluation board Warning: The adapter can withstand pressure upto 1000 kPa. Do not apply more than 1000 kPa to the adapter. Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91 User manual version 1.0 www.we-online.
2 Functional description The differential pressure sensor evaluation board supports the standard I2 C communication interface as well as analog voltage output. • A positive supply voltage 5V is applied to the sensor through VDD pin. • The I2 C interface pins SDA and SCL are connected with the interface pins on the host controller side • 7-bit slave address of the differential pressure sensor on the board is 0x78.
2.1 Evaluation board in operation 2.1.1 Pin header connection Pin no. Description 1 GND 2 SCL 3 SDA 4 Not connected 5 VOUT 6 VDD 6 5 4 3 2 1 Table 3: Pin header connection to external boards 2.1.2 Analog Output SJ1 is assembled with a 0 Ω resistor enabling the analog voltage output. The analog output can be read directly through the pin 6 (VOUT ) of the pin header connection. Figure 4: Analog output resistor By removing the 0 Ω resistor (SJ1), the analog output can be disabled.
2.1.3 Through hole connection Figure 5: Through hole connection Please refer to Table 2 for the pin description of the sensor. Please refer to the user manual of the differential pressure sensor for information regarding the conversion of digital and analog values into pressure SI unit. Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91 User manual version 1.0 www.we-online.
2.2 Schematic diagram Figure 6: Schematic diagram Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91 User manual version 1.0 www.we-online.
3 Important notes The following conditions apply to all goods within the sensors product range of Würth Elektronik eiSos GmbH & Co. KG: 3.1 General customer responsibility Some goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas.
3.5 Product improvements Due to constant product improvement, product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard, we inform about major changes. In case of further queries regarding the PCN, the field sales engineer, the internal sales person or the technical support team in charge should be contacted. The basic responsibility of the customer as per section 3.1 and 3.2 remains unaffected.
4 Legal notice 4.1 Exclusion of liability Würth Elektronik eiSos GmbH & Co. KG considers the information in this document to be correct at the time of publication. However, Würth Elektronik eiSos GmbH & Co. KG reserves the right to modify the information such as technical specifications or functions of its products or discontinue the production of these products or the support of one of these products without any written announcement or notification to customers.
informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety must be performed on every electronic component, which is used in electrical circuits that require high safety and reliability function or performance. By using Würth Elektronik eiSos GmbH & Co. KG products, the customer agrees to these terms and conditions. Differential Pressure Sensor Evaluation Board, Part Nr. 25132545xxx91 User manual version 1.0 www.we-online.
5 License terms for Würth Elektronik eiSos GmbH & Co. KG sensor product software and source code This License terms will take effect upon the purchase and usage of the Würth Elektronik eiSos GmbH & Co. KG sensor products. You hereby agree that this license terms are applicable to the product and the incorporated software, firmware and source codes (collectively, "Software") made available by Würth Elektronik eiSos in any form, including but not limited to binary, executable or source code form.
use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc. You shall inform Würth Elektronik eiSos about the intent of such usage before design-in stage.
resolved and finally settled by the court competent for the location of Würth Elektronik eiSos registered office. 5.7 Severability clause If a provision of this license terms are or becomes invalid, unenforceable or null and void, this shall not affect the remaining provisions of the terms. The parties shall replace any such provisions with new valid provisions that most closely approximate the purpose of the terms. 5.
List of Figures 1 2 3 4 5 6 Evaluation board for the differential pressure sensor Evaluation board for the differential pressure sensor Assembly of the evaluation board . . . . . . . . . . . Analog output resistor . . . . . . . . . . . . . . . . . Through hole connection . . . . . . . . . . . . . . . Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
more than you expect Internet of Things Contact: Würth Elektronik eiSos GmbH & Co. KG Division Wireless Connectivity & Sensors Max-Eyth-Straße 1 74638 Waldenburg Germany Tel.: +49 651 99355-0 Fax.: +49 651 99355-69 www.we-online.
