MCP47CVD21-E/UN

Digital To Analog Converters Overview

The MCP47CVD21-E/UN is a single-channel, 12-bit Digital-to-Analog Converter (DAC) featuring volatile memory and an I²C serial interface. It operates within a supply voltage range of 2.7V to 5.5V for full specifications, or 1.8V to 2.7V with reduced analog performance. The device provides buffered voltage outputs with integral nonlinearity (INL) specified at ±1 LSB. Key electrical parameters include a typical settling time of 4 µs, a maximum power-down current of 2.4 µA, and a typical supply current of 180 µA at 100 kHz operation. It supports Standard (100 kbps), Fast (400 kbps), and High-Speed (up to 3.4 Mbps) I²C modes.

Digital To Analog Converters Feature Summary

• Single-channel 12-bit resolution with volatile RAM storage for DAC output values.
• Configurable voltage reference sources including VDD, external VREF pin, or internal band gap.
• I²C compatible serial interface supporting multiple clock speeds up to 3.4 Mbps.
• Power-on/Brown-out reset protection and selectable power-down modes.

Digital To Analog Converters Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration circuits requiring precise voltage references
• Low-power portable instrumentation devices
• PC peripheral interface boards
• Data acquisition systems

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure that the 'E' designation corresponds to the extended industrial temperature range required for your application environment. Cross-reference the datasheet revision number to confirm compatibility with your design specifications before finalizing procurement orders.

Digital To Analog Converters Selection Notes

Select this component when a single-channel 12-bit DAC with volatile memory is required. Consider the MCP47CMD21 variant if nonvolatile MTP memory retention is necessary across power cycles. Evaluate the operating voltage requirements carefully, as specifications degrade below 2.7V. Verify that the I²C address configuration via A0/A1 pins fits within your system's bus topology constraints.

Digital To Analog Converters Part Context

This part belongs to the MCP47CXDX family of digital-to-analog converters manufactured by Microchip Technology. The family includes variants with different resolutions (8, 10, 12 bits), channel counts (single, dual), and memory types (volatile RAM vs. nonvolatile MTP). The MCP47CVD21 specifically denotes the single-channel, 12-bit, volatile memory configuration within this series.

Digital To Analog Converters Replacement Considerations

Publicly confirmed substitutes within the same family include MCP47CMD21-E/UN for nonvolatile memory applications. Other compatible parts in the series are MCP47CVD12-E/UN (dual channel) or MCP47CVD01-E/UN (8-bit resolution). Verify pinout and register compatibility before substituting.

Digital To Analog Converters FAQ

What is the default output value upon power-up?

The factory default setting for the DAC register is mid-scale code (7FFh for 12-bit) unless configured otherwise by the user prior to power loss.

How does the device handle voltage references?

The device allows selection of VDD, an external VREF pin, or an internal band gap voltage (typically 1.214V) as the reference source. Gain options of 1x or 2x are available when using an external reference.

What happens to the stored data when power is removed?

Since this model uses volatile memory (RAM), all stored DAC values and configuration settings are lost when power is removed. Data must be reloaded from an external microcontroller after power restoration.