Digital-to-analog converters for MCUs, MCU control chips
By employing a hybrid architecture of dynamic resistor strings and R-2R ladder resistor networks in the MCU system, the shortcomings of digital-to-analog converters in terms of accuracy, speed, power consumption, and area are solved, achieving efficient 12-bit binary weighted voltage output.
CN122348749APending Publication Date: 2026-07-07SHENZHEN LETUO TECH CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN LETUO TECH CO LTD
- Filing Date
- 2026-06-08
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
The existing digital-to-analog converter architecture in MCU systems is too simple to meet the comprehensive requirements of accuracy, speed, power consumption and area.
Method used
A hybrid architecture of dynamic resistor strings and R-2R ladder resistor networks is adopted, combined with decoding circuits and buffer circuits, to achieve 12-bit binary weighted voltage output.
Benefits of technology
It achieves high-precision and high-speed conversion while reducing power consumption and chip area, meeting the application requirements of MCU systems.
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Figure CN122348749A_ABST
Abstract
This application discloses a digital-to-analog converter (DAC) and an MCU control chip for an MCU. The DAC includes a decoding circuit, a resistor array DAC, and a buffer circuit. The decoding circuit is connected to the resistor array DAC, and the resistor array DAC is connected to the buffer circuit. The resistor array DAC includes a dynamic resistor string and an R-2R ladder resistor network, and is used to implement a 12-bit binary weighted voltage output. This application implements a hybrid architecture, thereby better meeting the application requirements of MCU systems.
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