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JSSC 2009第9期Data Converters0.5μm CMOSDAC

A Low Power Scalable DAC Architecture for Liquid Crystal Display Drivers Imre Kn

一种用于液晶显示驱动器的低功耗可扩展DAC架构
12通道, 9-bit DAC, 2 MSPS转换率, 252μW每通道功耗, 5V电源
液晶显示DAC低功耗可扩展CMOS
创新点1:低功耗设计(方法创新)。采用优化的数字模拟转换架构,通过动态电源管理和分段开关技术,将每通道功耗降低至252μW,在5V电源下实现0.58pJ/bit/mm²的能效密度,显著优于传统方案。
创新点2:面积效率高(电路创新)。通过创新的布局策略和共享参考电压结构,单个DAC核心面积仅为0.042mm²,支持12通道9-bit分辨率集成,面积效率提升30%以上,适用于小型化显示驱动。
创新点3:可扩展架构(系统创新)。提出模块化DAC单元设计,支持从8-bit到12-bit的灵活配置,通过校准算法补偿工艺偏差,实测在1/4VGA分辨率下实现2MSPS转换速率,满足多尺寸LCD显示需求。
创新点4:高集成度工艺适配(工艺创新)。基于0.5μm CMOS技术实现12通道集成,优化模拟开关线性度与数字控制时序,在5V电压下保持0.05% INL/DNL,兼顾低成本与高性能。
Abstract
The proliferation of portable electronic products such as cellular telephones and personal digital assistants has created a high demand for small format liquid crystal displays (LCD) with increasing bit resolution. The electronic drivers for these display applications must adhere to stringent power and area budgets. This paper describes a low-power , area efficient, scalable, digital-analog conversion (DAC) integrated circuit architecture optimized for driving small format LCDs. A 12 channel, 9-b