MCP48CMB08T-20E/ST

Overview

The MCP48CMB08T-20E/ST is an octal-channel, 8-bit Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory and a serial Peripheral Interface (SPI). It operates within a supply voltage range of 2.7V to 5.5V for full specifications, or 1.8V to 2.5V with reduced analog performance. The device provides buffered voltage outputs with selectable gain settings of 1x or 2x. Key electrical parameters include a typical settling time of 4µs, a maximum SPI write speed of 50 MHz, and a read speed of 25 MHz. It supports reference sources including VDD, external VREF, or an internal band gap.

Feature Summary

• Integrates MTP nonvolatile memory allowing up to 32 user-programmable writes per location for persistent configuration storage.
• Features buffered voltage output channels with selectable unity (1x) or double (2x) gain capabilities.
• Supports flexible reference voltage selection from the device supply, an external pin, or an integrated internal band gap source.

Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration circuits requiring precise analog adjustments
• Low-power portable instrumentation devices
• Data acquisition systems utilizing multi-channel signal generation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure that the required programming voltage on the HVC pin is supported by the host system design before procurement. Confirm availability through authorized Microchip Technology distributors.

Selection Notes

Select this component when multiple independent analog outputs are required in a single package. The MTP memory option is suitable for applications needing power-up state retention without external EEPROM. Verify that the host microcontroller supports the required SPI modes and can provide the necessary high-voltage level for MTP programming if used.

Part Context

This part belongs to the MCP48CXBX4/8 family of digital-to-analog converters. It shares architectural similarities with volatile memory variants like the MCP48CVB08 and other resolutions such as the MCP48CMB18. The 'T' suffix indicates tape and reel packaging, while '/ST' denotes the TSSOP package style.

Replacement Considerations

Direct functional substitutes within the same family include the MCP48CVB08T-20E/ST for volatile memory applications or the MCP48CMB18T-20E/ST for higher resolution requirements. Cross-family replacements require verification of pin compatibility and interface protocols.