Wednesday, November 28, 2018

Gravity: I2C 12-Bit DAC Module

INTRODUCTION



DFRobot Gravity 12-Bit I2C DAC is a small and easy-to-use 12-bit digital-to-analog converter with EEPROM. It can accurately convert the digital value to corresponding analog voltage signal, which is useful in may creative projects and automatic control systems. Although an analog voltage signal can be generated by PWM with traditional controllers such as Arduino and Raspberry Pi, such signal is ROUGH and NOT ACCURATE. To obtain a steady and nice analog voltage signal, the DAC is the best candidate. In addition to be applied in automatic control systems, the DAC module can be used to serve as a function generator to generate sine wave, triangular wave and even arbitrary waveform (we provide a library to generate low frequency sin and triangular wave with just a few parameters).

The module employs a 12-bit DAC MCP4725. It requires no external reference voltage (DAC reference is driven from VCC directly), supports 3.3V~5V wide input voltage and has a I2C address selection switch (two address 0x60 and 0x61 are available, which support maximum two modules in cascade). The EEPROM can retain the DAC input while power-off and resume the DAC output upon power-on.



SPECIFICATION



  • Input Voltage (VCC): 3.3V~5.0V

  • Output Voltage: 0 ~ VCC

  • Resolution: 12-bit

  • Working Current: <0.2 mA

  • Interface: Gravity I2C (logic level: 0-3.3V)

  • Dimension: 27.0mm*22.0mm

  • Weight: 13.8g

  • FEATURES




  • 12-bit high accuracy DAC

  • On-board EEPROM, retain DAC input while power-off

  • Gravity I2C interface, plug and play. XH2.54 4P reserved for expansion

  • Wide voltage input, compatible with 3.3V and 5V controllers

  • Small size and easy to install

  • PACKING LIST



  • Gravity: I2C 12-Bit DAC Module x1

  • XH2.54-4P Header x1

  • Gravity-4P I2C/ UART Sensor Wire x1

  • DOCUMENTS



  • Product wiki

  • More Documents

  • COUNTRIES WE SHIP TO

    Philippines, Sweden, Chad, Pacific Islands, Zambia, Cyprus, Latvia, India, Sierra Leone, Denmark, Haiti, Mauritius, Swaziland, Albania, Paraguay, French Guiana, Peru, Gabon, Tajikistan, Liberia, Cayman Islands, Turkmenistan, Thailand, Vietnam, Hungary, Kenya, Bahamas, Belarus, Anguilla, Iran, Mali, Singapore, Uzbekistan, Guinea-Bissau, Trinidad & Tobago, Austria, Barbados, Puerto Rico, Kazakhstan, Antigua & Barbuda, Georgia, New Zealand, Iceland, France, Congo, Laos, Martinique, Tanzania, Madagascar, Slovenia, Armenia, Bahrain, Belgium, Lebanon, Turkey, Nicaragua, Nepal, Libya, Switzerland, Yemen, Comoros, Bhutan, Saint Vincent and the Grenadines, Somalia, Turks & Caicos Islands, Saint Lucia, Sao Tome and Principe, Gambia, Egypt, Slovak Republic (Slovakia), Macedonia, Republic of, Cambodia, Finland, United Arab Emirates, Andorra, Saint Kitts and Nevis, Myanmar/Burma, Guadeloupe, Ukraine, Estonia, Qatar, Virgin Islands (UK), Mozambique, Niger, Ethiopia, Greece, Norway, Montserrat, Afghanistan, Dominica, Luxembourg, Malawi, Solomon Islands, Togo, Romania, Jordan, Maldives, Korea, Republic of (South Korea), Uganda, Mongolia, Germany, Netherlands, Cameroon, Panama, Malaysia, Guatemala, Cuba, Chile, Venezuela, Guyana, Uruguay, Iraq, Benin, Reunion, Guinea, Cape Verde, Moldova, Republic of, Timor Leste, Angola, Costa Rica, Syria, Algeria, Kyrgyz Republic (Kyrgyzstan), Virgin Islands (US), Croatia, Zimbabwe, Central African Republic, Kuwait, Serbia, Honduras, Colombia, Eritrea, Bolivia, Monaco, El Salvador, Samoa, Namibia, Brazil, Bosnia & Herzegovina, South Africa, United States of America (USA), Canada, Grenada, Lesotho, Ghana, Bermuda, Jamaica, Australia, Indonesia, Burkina Faso, Mauritania, Liechtenstein, Kosovo, Nigeria, Mexico, Malta, Russian Federation, Suriname, Montenegro, China - Hong Kong / Macau, Equatorial Guinea, Congo, Democratic Republic of (DRC), Japan, Morocco, Djibouti, Seychelles, Senegal, Brunei Darussalam, Mayotte, Sudan, Lithuania, Tunisia, China, Pakistan, Fiji, Burundi, Botswana, Korea, Democratic Republic of (North Korea), Azerbaijan, South Sudan, Bangladesh, Argentina, Portugal, Dominican Republic, Belize, Czech Republic, Ecuador, Poland, Papua New Guinea, Saudi Arabia, Rwanda, Israel and the Occupied Territories, Ivory Coast (Cote d'Ivoire), Great Britain, Italy, Spain, Oman, Sri Lanka, Bulgaria


    https://kdrobotkit.com/product/gravity-i2c-12-bit-dac-module/

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