MCP4728 Quad Channel 12-bit Digital-to-Analog Converter ‍ ‍

MCP4728 Digital-to-Analog Converter (DAC)

MCP4728 is a quad channel, 12-bit voltage output Digital-to-Analog Converter (DAC) with non-volatile memory and I2C™ compatible serial interface. You can program the DAC input codes, device configuration bits and I2C address bits to the non-volatile memory (EEPROM) by using I2C™ Compatible interface commands. The non-volatile memory feature enables the DAC device to hold the DAC input codes during power-off time, allowing the DAC outputs to be available immediately after power-up.


MCP4728 DAC Features

  • 12-Bit Resolution
  • 4 Buffered Voltage Outputs
  • Single-Supply Operation: 2.7 V to 5.5 V
  • On-Board Non-Volatile Memory (EEPROM)
  • Normal or Power-Down Mode
  • Internal or External Voltage Reference Selection
  • Rail-to-Rail Output
  • Low-Power Consumption
  • ±0.2 LSB DNL (typical)
  • I2C™ Interface
  • Address bits: User Programmable to EEPROM
  • Standard (100 kbps), Fast (400 kbps), and High Speed (3.4 Mbps) Modes
  • 10-lead MSOP Package
  • Extended Temperature Range: -40°C to +125°C

MCP4728 Target Applications

  • Set Point or Offset Adjustment
  • Sensor Calibration
  • Closed-Loop Servo Control
  • Low-Power Portable Instrumentation
  • PC Peripherals
  • Programmable Voltage and Current Source
  • Industrial Process Control
  • Instrumentation
  • Bias Voltage Adjustment for Power Amplifiers
Microchip Direct
Buy here >

MCP4728 Application: Setting the DC Set Point for Sensor Circuit

A common DAC application is digitally controlling the set point and/or calibration of parameters in a signal chain. The figure below illustrates controlling the DC set point of a light detector sensor using the MCP4728 12-bit quad DAC and MCP6544 comparator. The DAC provides 4,096 output steps. If G = 1 and internal reference voltage options are selected, then the internal 2.048 V reference (Vref) would allow 500 μV of resolution. If G = 2 is selected, the internal 2.048 Vref would allow 1 mV of resolution. If a smaller output step size is desired, the output range would need to be reduced. Using a gain of 1 is a better choice than using a gain of 2 as a configuration option for a smaller step size. Using a voltage divider at the DAC output is another method for obtaining a smaller step size.


20th Annual
Microchip MASTERs Conference 2016
Register now - Deadline: July 29

JW Marriott Desert Ridge Resort-Phoenix, AZ

© 2016 Microchip Technology, Inc.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.