MEETING REPORT Teddy 2015-01-09.

Presentation on theme: "MEETING REPORT Teddy 2015-01-09."— Presentation transcript:

1 MEETING REPORT Teddy

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3 R-string DAC adder R-string DAC Shift-register Level-shifter buffer

4 Add level-shifters between shift-registers and DACs

5 1.level-shifter 带载能力 增加W/L

6 ? 2.统一supply voltage，统一管子型号，电压源,偏置接口外置 Ibias is more stable than Vbias
Replace ideal instances Supply voltage:6V Ibias is more stable than Vbias ?

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8 Bias2=1.9V Bias3=3.88V 4uA Bias3 Bias2 7uA

9 Offset voltage:1.9mV-8mV Current: 17uA (use shut-down) Setting time: 1.2us (1pf load) 200ns (220ff)

10 Gain: 69dB Phase margin:88°

11 电路/基板设计评价： 1.消耗电流 2.Inrush电流（过渡状态是否有误动作） 3.Ripple电流（有无误动作，电流过大会影响整机电源规格） 4.电压变动（环境温度，输入频率，输入电压对电压的影响） 5.Ripple电压（是否影响显示品质，光学特性） 6.振动频率（确认DDC振动是否和输入信号同步） 7.DDC（Display Data Channel）时序 8.部件温度（负荷越大热量越高） 9.PCB 10.EMI

12 Add buffers between gamma voltage-source and R-string

13 add LDO 1.8V and 3V

14 Some phenomenon of buffer when system simulation

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16 Thanks