MCP48CMB18-20E/ST

Overview

The MCP48CMB18-20E/ST is an octal-channel, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features Multi-Time Programmable (MTP) nonvolatile memory and 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 utilizes a 4-wire SPI interface supporting write speeds up to 50 MHz and read speeds up to 25 MHz. It provides integral nonlinearity (INL) of ±0.25 LSB and differential nonlinearity (DNL) of ±0.25 LSB. The unit is housed in a 20-lead TSSOP package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates MTP nonvolatile memory allowing user programming up to 32 times per register location for persistent configuration storage.
• Offers flexible DAC voltage reference selection including device VDD, external VREF pin, or internal band gap source.
• Supports configurable output gain options of 1x or 2x when utilizing external reference sources.
• Includes power-down modes that disconnect the output buffer or select specific pull-down resistor values.

Applications

• Set point or offset trimming
• Sensor calibration
• Motor control systems

Procurement Notes

Verify the component against official datasheet DS20006556B to confirm the specific ordering suffix matches the required package and temperature grade. Ensure the MTP memory requirements align with the application's need for nonvolatile data retention. Cross-reference the supplier documentation with the manufacturer's latest product change notifications to validate authenticity and current manufacturing status.

Selection Notes

Select this model when an octal channel count is required alongside nonvolatile memory capabilities. The 10-bit resolution suits applications needing moderate precision without the complexity of higher bit counts. Consider the 20-TSSOP package constraints and verify that the system can provide the necessary high-voltage level on the HVC pin if MTP programming is utilized during operation.

Part Context

This component belongs to the MCP48CXBX4/8 family, which encompasses quad and octal channel DACs with varying resolutions and memory types. The 'M' designation indicates the inclusion of MTP nonvolatile memory, distinguishing it from volatile RAM variants. The '18' suffix specifies the 10-bit resolution and octal channel configuration within this series.

Replacement Considerations

MCP48CMB18T-20E/ST