AnalogIC_Lecture07_Bandgap

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TABLE OF CONTENTS
Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3

所有的时序电路对亚稳态都是敏感的
metastable 亚稳态
stable
稳态
stable
稳态
7.2 Latches and Flip-Flops (锁存器与触发器)
—— The Basic Building Blocks of most Sequential Circuits. (大多数时序电路的基本构件)
Clock Frequency: The Reciprocal of the Clock Period
(时钟频率：时钟周期的倒数。）
Clock Tick: The First Edge of Pulse in a clock period or sometimes the period itself.
DIGITAL SYSTEM DESIGN
ESHINE
eshine.li@
Chapter 7 Sequential Logic Design Principles ( 时序逻辑设计原理 )
Latches and Flip-Flops (锁存器和触发器 ) Clocked Synchronous State-Machine Analysis (同步时序分析) Clocked Synchronous State-Machine Design (同步时序设计)
Basic Concepts (基本概念)
Sequential Logic Circuit （时序逻辑电路） Clock Period: The Time between Successive transitions in the same direction.
(时钟周期：两次连续同向转换之间的时间。）

Latches（锁存器）

如何为ADC选择最合适的基准电压源放大器(最全)word资料主题: 驱动精密ADC：如何为您的ADC选择最合适的基准电压源和放大器?精彩问答:[问：callhxw]如何评定一颗ADC非线性？丢码？[答：Jing]you can use ADC"s INL and DNL parameter to evaluate the non-linearity and you can also use ENOB parameter to check code loss. Thanks!Generally ENOB releated with ADC"s SNR[2020-2-28 10:32:08][问：吉星]在差分输入时，不考虑直流，使用差分放大器和变压器哪个更好．[答：Mariah]Transformer is better for the better noise and distortion performance, especially in very high frequencies.[2020-2-28 10:32:14][问：Jane Yang]请问应如何处理板级噪声对于高精度AD的影响？特别是输入部分的噪声？[答：Jing]This is a good question and it"s very difficult to answer. Generally, You should consider all the input noise derived from sensor/AMP/BUFFER. You can also use a LPF to reduce the input noise. Remember the BGP of AMP should be 100x of ADC"s throughput. Thanks![2020-2-28 10:34:30][问：石林艳]AD变换的参考基准源很重要，对模拟供电电源和数字供电电源的要求也很高吗[答：Rui]模拟供电电源，和数字供电电源相对基准源来说，精度要求相对较低，一般情况下用10uF的电容和0.1uF滤波即可。

Willy Sansen
10-05
164
Bipolar transistor equations
IB + VBE IC = IS exp ( or IC = VBE kT/q ( ) )
CTη exp
VBE - Vg0 kT/q
-
- 2 mV/oC
with Vg0 = 1268 mV - η kTr/q
VDD Vout R1 + R2 R2
+
-
R1
Vout = Vref
+
-
Vref
R2
Willy Sansen
10-05
162
Current regulator
Iout + V1 + Iout
-
-
+ R
V2
-
+
-
Vref Vref R
R
Iout =
Iout =
V1 - V2 R
Willy Sansen
Ref.: B. Gilbert, G.Meijer, ACD , Kluwer 1995
Willy Sansen
10-05
1614
Bandgap reference with bipolar transistors
Insensitive to β and VE ! kT ∆VBE = ln nr q kT IC = ln nr qR2
n: 1 R1
+
2Vref 1: r 2R3 R2
Vref = 2VBE + VR3 1 1 kT VR3 = 2R3 ( + ) ln nr R1 R2 q
Ref.: G.Meijer, ACD , Kluwer 1995