放大器专区

该专区内容有关放大器专区的讨论和常见问题解答。发帖前请阅读 Analog Devices EngineerZone 行为准则。

by uuus
放大器专区

Latest 1 day ago by YAOQR
1109 4 0
Answered
AD8330 Gain Adjustment Output Constant Issue +1
Answered

The use of AD8330 to the front stage for gain compensation, single-ended input and single-ended output, 5V power supply, please ask the AD8330 output voltage range is 0-2VMAG Well, pin VMAG suspended, GMAG is 1 Well, the circuit test, VMAG suspended,...

Operational Amplifiers (Op Amps) Analog Control Variable Gain Amplifiers (VGAs) amplifiers ad8330 Variable Gain Amplifiers (VGA) Show More

1109 4 0
by hcynet1
放大器专区

Latest 2 days ago by tedasky
4132 31 1
Answered
ADHV4702增大输出电流，烧芯片问题 +1
Answered

想把ADHV4702的输出电流增大到100mA，采用VP2540和VN2540两个MOS管，按照datasheet上的图设计电路。仿真看步到问题。但是，在实验中，ADHV4702大概输出电流50mA超过1分钟就会烧芯片。已经烧了6pcs了，求帮忙

amplifiers

4132 31 1
by hyy1108
放大器专区

Latest 7 days ago by YYU3
62 1 0
Suggested Answer
Noise simulation of the ADA4817 and LTC6269 under the same bandwidth conditions. +1
Suggested Answer

Using LTspice to simulate the noise performance of the ADA4817 and LTC6269 as TIAs, with a feedback resistor of 100k and a feedback capacitor of 0.47pF, the noise of the ADA4817 is biger than that of the LTC6269 within the 1–10MHz bandwidth range. I find...

Operational Amplifiers (Op Amps) Datasheet/Specs High Speed Op Amps (Bandwidth = 50MHz) Low Input Bias Current Op Amps (≤100 pA) ada4817-1 Show More

62 1 0
by TszLv
放大器专区

Latest 7 days ago by YYU3
45 1 0
Answered
AD8009防静电等级 +1
Answered

请问下AD8009的防静电等级是多少？在datasheet中没有找到有关ESD等级的说明

Operational Amplifiers (Op Amps) Datasheet/Specs ad8009 Low Noise Op Amps (= 10nV/vHz)

45 1 0
by hcynet1
放大器专区

Latest 13 days ago by tedasky
832 2 0
Answered
ADHV4702的新应用优化 0
Answered

@ALee687 根据您的建议，上次那个烧芯片的问题正在重新做版。另外，我想还有一个应用，可以用ADHV4702做一个PID的校正环节。但是，做实验的时候，发现输出50V以上的时候，感觉芯片温度烫手了。有两个问题还得麻烦您： 1. 上次建议把R6从600欧换成39K。芯片烧毁的原理是啥？是因为MOS管的大电流从芯片输出端倒灌么？ 2. 这个电路在仿真的时候，出现很多纹波，尤其在80V以上输出的时候。您能帮忙给点优化的建议吗？ ADHV4702-1-t5.asc 因为上一个帖子回复的窗口总是打不开...

amplifiers

832 2 0
by 123adsdascsc
放大器专区

Latest 17 days ago by YYU3
78 1 0
Answered
为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0
Answered

直接使用LTSPICE中的ADHV4702-1模型，仿真出来的噪声在0.1HZ是1uV，在ADHV4702-1的详情页下载SPICE模型，导入到LTSPICE中，同样参数仿真出来的噪声是1mV@0.1Hz。哪个是正确的？是SPICE模型有误还是两个模型有区别。

Operational Amplifiers (Op Amps) Datasheet/Specs ADHV4702-1 High Voltage Op Amps =12V

78 1 0
by safds
放大器专区

Started 19 days ago
83 0 0
Not Answered
AD5560 SLEW RATE 0
Not Answered

The slew rate measured by AD5560 EVAL evaluation board is very different from the set 1V/us, which seems to be related to the compensation setting and current gear. my AVDD/AVSS， And HC-VDD/VSS are both+/-15V, measuring the rise time from 0 to 1V. 1....

amplifiers hardware ad5560 Device Power Supply (DPS) & Parametric Measurement Units (PMU) ATE Specialty Amplifiers Show More

83 0 0
by ccovoid
放大器专区

Latest 1 month ago by YYU3
142 1 0
Answered
请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1
Answered

请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？我主要用于测电阻工作，单通道的话测出的结果平均值和方差较低，但是跨通道使用的话测出来的结果误差稍大一点。有工程师能解答一下吗。

5522

142 1 0
by HongKeil
放大器专区

Latest 1 month ago by YYU3
142 1 0
Answered
差分放大采集，输出电压存不对 0
Answered

我通过AD620构建的差分电路，采集U18分流器电压，在没有电流的情况下，AD620输出电压有-1.5V,这是什么原因；

amplifiers hardware Instrumentation Amplifiers ad620

142 1 0
by AD8226
放大器专区

Latest 2 months ago by YYU3
140 1 0
Answered
AD8226运放放大异常 0
Answered

AD8226运放工作电压为4.5V LDO，输入信号分别为1.440V和1.445V，增益电阻悬空(1倍放大)，输出却有14mv，问题到底出在哪

ad8226 amplifiers Instrumentation Amplifiers

140 1 0

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放大器专区

Answered
AD8330 Gain Adjustment Output Constant Issue +1
Answered

Answered
ADHV4702增大输出电流，烧芯片问题 +1
Answered

Suggested Answer
Noise simulation of the ADA4817 and LTC6269 under the same bandwidth conditions. +1
Suggested Answer

Answered
AD8009防静电等级 +1
Answered

Answered
ADHV4702的新应用优化 0
Answered

Answered
为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0
Answered

Not Answered
AD5560 SLEW RATE 0
Not Answered

Answered
请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1
Answered

Answered
差分放大采集，输出电压存不对 0
Answered

Answered
AD8226运放放大异常 0
Answered

Answered
AD8009防静电等级 +1
Answered

Answered
为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0
Answered

Answered
请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1
Answered

Answered
差分放大采集，输出电压存不对 0
Answered

Answered
AD8226运放放大异常 0
Answered

Answered
一个运放怎样搭建一个PI调节器 0
Answered

Answered
OP484上电高温，运放振荡求助。 0
Answered

Answered
闭环回路中噪声源的PSD传递函数 0
Answered

Answered
关于AD8123视频均衡器单电源供电问题 +1
Answered

Answered
关于SD和TMP引脚联合使用的问题 0
Answered

放大器专区

Answered AD8330 Gain Adjustment Output Constant Issue +1 Answered

Answered ADHV4702增大输出电流，烧芯片问题 +1 Answered

Suggested Answer Noise simulation of the ADA4817 and LTC6269 under the same bandwidth conditions. +1 Suggested Answer

Answered AD8009防静电等级 +1 Answered

Answered ADHV4702的新应用优化 0 Answered

Answered 为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0 Answered

Not Answered AD5560 SLEW RATE 0 Not Answered

Answered 请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1 Answered

Answered 差分放大采集，输出电压存不对 0 Answered

Answered AD8226运放放大异常 0 Answered

Answered AD8009防静电等级 +1 Answered

Answered 为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0 Answered

Answered 请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1 Answered

Answered 差分放大采集，输出电压存不对 0 Answered

Answered AD8226运放放大异常 0 Answered

Answered 一个运放怎样搭建一个PI调节器 0 Answered

Answered OP484上电高温，运放振荡求助。 0 Answered

Answered 闭环回路中噪声源的PSD传递函数 0 Answered

Answered 关于AD8123视频均衡器单电源供电问题 +1 Answered

Answered 关于SD和TMP引脚联合使用的问题 0 Answered

Answered
AD8330 Gain Adjustment Output Constant Issue +1
Answered

Answered
ADHV4702增大输出电流，烧芯片问题 +1
Answered

Suggested Answer
Noise simulation of the ADA4817 and LTC6269 under the same bandwidth conditions. +1
Suggested Answer

Answered
AD8009防静电等级 +1
Answered

Answered
ADHV4702的新应用优化 0
Answered

Answered
为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0
Answered

Not Answered
AD5560 SLEW RATE 0
Not Answered

Answered
请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1
Answered

Answered
差分放大采集，输出电压存不对 0
Answered

Answered
AD8226运放放大异常 0
Answered

Answered
AD8009防静电等级 +1
Answered

Answered
为什么在LTspice中的模型ADHV4702-1和使用SPICE模型的噪声仿真结果不一样 0
Answered

Answered
请教一下AD5522芯片能跨通道使用吗？就是通道1当驱动电流，通道2作为测试电压通道。我这样使用相比单通道测试误差变大了很多。有专业人士能解答一下吗？ +1
Answered

Answered
差分放大采集，输出电压存不对 0
Answered

Answered
AD8226运放放大异常 0
Answered

Answered
一个运放怎样搭建一个PI调节器 0
Answered

Answered
OP484上电高温，运放振荡求助。 0
Answered

Answered
闭环回路中噪声源的PSD传递函数 0
Answered

Answered
关于AD8123视频均衡器单电源供电问题 +1
Answered

Answered
关于SD和TMP引脚联合使用的问题 0
Answered