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2026/1/27

Introduction to MCP4921T-E-MS

.Overview of product

The MCP4921T-E-MS is a 12-bit single-channel Digital-to-Analog Converter (DAC) from Microchip Technology. It features SPI interface, external reference, and wide operating temperature range, suitable for various precise data acquisition and signal conversion applications.

 

.Core parameter

Category:Integrated Circuits (ICs),Data Acquisition,Digital to Analog Converters (DAC)

Manufacturer:Microchip Technology

Packaging:Tape & Reel

Part Status:Active

Settling Time:4.5µs (Typ)

Output Type:Voltage - Buffered

Data Interface:SPI

Reference Type:External

Voltage - Supply, Analog:2.7V ~ 5.5V

Voltage - Supply, Digital:2.7V ~ 5.5V

INL/DNL (LSB):±4, ±0.25

Operating Temperature:-40°C ~ 125°C

Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Mounting Type:Surface Mount

 

.Main characteristics

High Resolution:Equipped with 12-bit resolution, ensuring precise digital-to-analog conversion and stable analog output for high-accuracy application demands.

High Accuracy:With INL of ±4 LSB and DNL of ±0.25 LSB, it delivers monotonic output, minimizing conversion errors and enhancing signal reliability.

SPI Interface:Adopts SPI communication interface, enabling fast and reliable data transmission, easy integration with microcontrollers (MCUs) and digital systems.

Flexible Power Supply:Analog and digital supply voltages both range from 2.7V to 5.5V, supporting low-voltage operation and battery-powered devices.

Fast Settling:Typical settling time of 4.5µs allows rapid conversion from digital signals to stable analog outputs, improving system response speed.

External Reference:Features external reference type, allowing users to configure reference voltage flexibly based on actual application requirements for more precise control.

 

.Application field

Industrial Control:Used in PLC (Programmable Logic Controller) analog output modules to convert digital control signals into analog voltages for valve and motor speed regulation.

Test Equipment:Applied in digital multimeters and signal generators to provide precise analog reference signals for accurate measurement and calibration.

Automotive Electronics:Integrated into automotive sensor signal conditioning circuits to convert digital data into analog signals for engine control units (ECUs).

Portable Devices:Used in battery-powered handheld instruments (such as portable pH meters) due to its low-voltage power supply and compact package.

Audio Systems:Applied in digital audio players and amplifiers to convert digital audio signals into analog signals for high-fidelity sound output.

Medical Instruments:Used in blood glucose meters and heart rate monitors to convert digital measurement data into analog signals for display and processing.

Power Management:Integrated into DC-DC converter control circuits to provide precise analog control signals for voltage regulation and current stabilization.

 

.Summary

The MCP4921T-E-MS is a high-performance, cost-effective 12-bit DAC with excellent precision, flexible configuration, and wide adaptability. Its compact package and stable performance make it an ideal choice for various precise digital-to-analog conversion scenarios in industrial, automotive, medical, and consumer electronics fields.