• ### LTC6228 voltage noise in LTspice correct?

Hi,

running a voltage noise simulation in LTspice with a simple voltage follower circuit shows a large discrepancy to datasheet values for the voltage noise.

To make sure nothing was wrong with my simulation I also checked the LTC6226. Below is a comparison…

• ### LTC6228 phase margin

Hi,

I'm trying to calculate the phase margin using this circuit:

But I'm getting a strange phase response (I think):

Is this phase response right? If so does it mean that the opamp is always stable?

Thank you,

Regards,

Joao

• ### LTC6228 input current noise in LTspice

Hello,

I have been checking the input current noise with bias cancellation enabled and disabled. The data sheet shows that with bias cancellation enabled (VSHDN = V+) the current noise is bigger:

Following fig 3 in the data sheet I made this simulation…

• ### Scaling and Shifting the Input Signal for Wide Bandwidth Measurements

 PDF This KWIK (Know-how With Integrated Knowledge) Circuit FAQ is a step by step guide that goes through the design of the input stage to an ADC where it discusses the key functions associated with a ADC driver design. This FAQ goes through how to scale…
• ### RE: LTSPICE noise calculation

Hi master89,

I'm not an LTspice specialist. So, I cannot comment on how LTspice keeps track of correlated vs uncorrelated noise, but it does :-) Maybe other people more knowledgeable on this forum about how simulators treat noise can comment?

To convince…

• ### RE: 多级运放放大电路有什么技巧？

你的仿真需要配合你的APD管，你先把你的APD管进行建模，然后再配合运放进行仿真，才能看到你的Nosie Gain在全频带下到底有多大。同相端的噪声会乘以Noise Gain才会最终影响到输出端。

• ### Amplifying Performance & Versatility

Electronic amplifiers have been around for over 100 years, first as vacuum tubes then, starting in the 1940s, using transistors. In the 1960s researchers learned how to miniaturize and place dozens of transistors into packages no bigger than a nickel…

• ### RE: 微信爆款系列丨您真的能通过运算放大器实现ppm精度吗？

高速放大器 LT1468产品详情：https://www.analog.com/cn/products/lt1468.html

超低噪声、精准型运算放大器LT6018产品详情：https://www.analog.com/cn/products/lt6018.html

低失真轨到轨输出运算放大器LTC6228产品详情：https://www.analog.com/cn/products/ltc6228.html

• ### RE: 超声信号的放大处理方案

LTC6226和LTC6228 可以考虑，低失调电压和高带宽，要注意你的输入信号是正弦波还是脉冲波形等情况，如果是脉冲波形，需要考虑建立时间，0.35/settlingtime = 实际带宽。另外要根据增益带宽积 实际带宽*增益 = 运放增益带宽积 寻找适合你的运放，

• ### Bandwidth mismatch between photodiode wizard and LTSpice

Hello,

Attached is a design from the photodiode wizard tool. It is a two stage design. When second stage is non-inverting, -3dB bandwidth from the tool (fN) roughly matches with that from LTspice. However, when the second state is inverting, the tool…