MCP4812-E/MS

Digital To Analog Converters Overview

The MCP4812-E/MS is a dual-channel, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It operates on a single supply voltage ranging from 2.7V to 5.5V and features an internal 2.048V voltage reference with a temperature coefficient of 50 ppm/°C. The device utilizes a resistive string architecture and supports SPI communication with clock frequencies up to 20 MHz. Key electrical specifications include a typical settling time of 4.5 µs, rail-to-rail output capability, and selectable unity or 2x gain. It functions within an extended temperature range of -40°C to +125°C and is housed in an 8-lead MSOP package.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with simultaneous latching via the LDAC pin for synchronized updates
• Integrated precision voltage reference eliminating external component requirements
• Rail-to-rail buffered outputs supporting high capacitive loads without oscillation
• Software-selectable shutdown mode for individual channel power reduction

Digital To Analog Converters Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration for temperature, pressure, and humidity compensation
• Precision selectable voltage reference generation
• Portable instrumentation powered by battery supplies
• Calibration of optical communication devices

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix '-E/MS' to confirm the commercial temperature grade (-40°C to +85°C) and MSOP-8 packaging. Ensure compatibility with the required SPI interface modes (Mode 0,0 or Mode 1,1). Confirm that the application load conditions align with the specified output swing and current drive capabilities before finalizing procurement.

Digital To Analog Converters Selection Notes

Select this component when dual-channel synchronization is required alongside 10-bit resolution. Compare against the MCP4802 for lower resolution needs or the MCP4822 for higher precision applications. Consider the internal reference stability and gain settings relative to the system's full-scale voltage requirements. Verify that the MSOP package dimensions fit the available PCB real estate constraints.

Digital To Analog Converters Part Context

This part belongs to the MCP48X2 family of dual DACs, sharing pinouts and functional similarities with the MCP4802 and MCP4822. It serves as the mid-range resolution option within the series, offering a balance between performance and power consumption. The 'E' designation indicates the standard commercial temperature range, while '/MS' specifies the surface-mount MSOP package type.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include the MCP4802-E/MS and MCP4822-E/MS, provided resolution differences are acceptable. Cross-family replacements require verification of pin compatibility, SPI timing parameters, and output buffer characteristics to ensure seamless integration without hardware modifications.