MCP48CMB08-20E/ST

Overview

The MCP48CMB08-20E/ST is an octal-channel, 8-bit Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory. It operates on a single supply voltage ranging from 2.7V to 5.5V, with reduced specifications available between 1.8V and 2.7V. The device utilizes a resistive string architecture providing 1 LSB Integral Nonlinearity (INL). It supports SPI serial interfaces with write speeds up to 50 MHz and read speeds up to 25 MHz. Key features include selectable gain options of 1x or 2x, multiple reference sources including internal band gap, and power-down modes for low-power applications.

Feature Summary

• Integrates MTP nonvolatile memory allowing user programming of output values and configuration registers.
• Provides buffered voltage outputs with selectable unity or 2x gain capabilities.
• Supports flexible reference voltage selection from VDD, external VREF pin, or internal band gap.
• Includes Power-on Reset and Brown-out Reset protection mechanisms.

Applications

• Set point or offset trimming in industrial systems
• Sensor calibration circuits
• Low-power portable instrumentation
• Data acquisition systems
• Motor control applications

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the MTP memory programming requirements align with system design constraints, particularly regarding the high-voltage level needed for programming operations. Ensure compatibility with existing SPI interface protocols before finalizing procurement decisions.

Selection Notes

Select this component when multiple DAC channels are required in a compact footprint. Consider the MTP feature if persistent storage of calibration data or initial output states is necessary without external EEPROM. Evaluate the 8-bit resolution against application accuracy needs, noting the trade-off between cost and performance compared to higher-resolution variants.

Part Context

This part belongs to the MCP48CXBX4/8 family, which includes quad and octal channel configurations with varying resolutions. The 'M' designation indicates the inclusion of MTP memory, distinguishing it from volatile RAM-only versions. The '08' specifies the octal channel count, while '20E' denotes the operating temperature range and package variant.

Replacement Considerations

Direct replacements within the same family include other MCP48CMBxx parts with different channel counts or resolutions. Cross-family alternatives may require verification of pin compatibility and SPI interface timing. Ensure any substitute maintains the required MTP functionality if nonvolatile storage is critical to the design.