MCP4812-E/SN

Overview

The MCP4812-E/SN is a dual-channel, 10-bit voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features an internal 2.048V reference voltage and operates on a single supply ranging from 2.7V to 5.5V. The device utilizes a resistive string architecture with buffered rail-to-rail outputs and supports SPI communication with clock speeds up to 20 MHz. Key electrical specifications include a typical settling time of 4.5 µs, INL error of ±3.5 LSB, and DNL error of ±0.5 LSB at 25°C. It offers selectable unity or 2x gain output configurations and individual channel shutdown modes for power optimization.

Feature Summary

• Dual-channel 10-bit resolution with buffered rail-to-rail analog outputs
• Integrated 2.048V internal voltage reference with low temperature coefficient
• SPI compatible serial interface supporting simultaneous latching via LDAC pin
• Configurable gain selection (1x or 2x) and independent software shutdown control

Applications

• Set point or offset trimming in industrial systems
• Sensor calibration for precision measurement devices
• Portable instrumentation requiring battery-powered operation
• Calibration of optical communication equipment

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +125°C). Confirm the 'SN' suffix corresponds to the 8-lead SOIC package. Ensure compatibility with system voltage levels and SPI timing requirements before integration.

Selection Notes

Select this component when dual-channel 10-bit resolution is required with integrated buffering. Compare against MCP4802 for lower resolution needs or MCP4822 for higher precision applications. Consider the fixed internal reference versus external options available in other series members.

Part Context

This part belongs to the MCP48X2 family of dual DACs, which also includes the 8-bit MCP4802 and 12-bit MCP4822 variants. All members share identical pinouts, interfaces, and core architectures, differing primarily in resolution and associated linearity specifications.

Replacement Considerations

Direct functional substitutes within the same package include MCP4802-E/SN and MCP4822-E/SN. Verify that the application can tolerate the different resolution and linearity characteristics of these alternative parts.