Search for a Differential Line Receiver

Hi,

Aside from 40 to 100 Vdc common-mode, what are the other parameters that are deemed critical for your application? There could be a variety of options and with your defined requirements, we can narrow down the selection. Thank you!

Regards,

Jino 

Hi Jino,

      Thank you for your reply!

      Aside from 40 to 100 Vdc input voltage, there is not other special

requirement. I want to get one Differential Line Receiver with the same

function and circuit to the SSM2141, which is used to couple a large dc

voltage  and a small ac voltage, and then output them to a resistor of a

circuit together. So it is better to be closer to the SSM2141.

      What products do you have that meet these requirements? The

attachments are the details of SSM2141.

      Thank you!

Regards,

SUN Yajun

2018-07-02 15:43 GMT+08:00 JinoL <analog@analog-vm.hosted.jivesoftware.com>:

EngineerZone <https://ez.analog.com/?et=watches.email.thread>

Re: Search for a Differential Line Receiver

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Hi,

The closest part replacement for SSM2141 in terms of your High Voltage common mode requirements with good CMRR performance and also pin-compatible, is the AD8479. Just take note that it has a lower bandwidth, 130 kHz, as compared to SSM2141 which is 3 MHz.

Let me know if this fits your application requirement.

Regards,

Jino

Hi Jino,

     Thank you very much for your recommendation!

     AD8479 is very good for my application. And the bandwidth of 130 kHz

is ok. The signal's frequency is about between 1 kHz and 2 kHz.

     Thank you!

Regards,

SUN Yajun

2018-07-03 18:16 GMT+08:00 JinoL <analog@analog-vm.hosted.jivesoftware.com>:

EngineerZone <https://ez.analog.com/?et=watches.email.thread>

Re: Search for a Differential Line Receiver

reply from JinoL

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Hi  Jino,

       I have looked up AD8479 and found that it has different types

like  AD8479

ARZ and  AD8479 BRZ. What difference between them and which one is more

suitable for my application?

Thank you very much!

Regards,

SUN Yajun

2018-07-05 15:09 GMT+08:00 Yajun Sun <yajunsun124@gmail.com>:

Hi Jino,

     Thank you very much for your recommendation!

     AD8479 is very good for my application. And the bandwidth of 130 kHz

is ok. The signal's frequency is about between 1 kHz and 2 kHz.

     Thank you!

Regards,

SUN Yajun

>

2018-07-03 18:16 GMT+08:00 JinoL <analog@analog-vm.hosted.jivesoftware.com

>:

>> EngineerZone <https://ez.analog.com/?et=watches.email.thread>

>> Re: Search for a Differential Line Receiver

>>

>> reply from JinoL

>> <JinoL> in

>> Amplifiers - View the full discussion

>> <https://ez.analog.com/message/356273-re-search-for-a-differential-line-receiver?commentID=356273&et=watches.email.thread#comment-356273>

>>

Hi SUN Yajun,

AD8479 comes with grades, being A and B. B grade has more excellent specs than A grade, specifically the DC specs. The specifications in Table 1, page 3 of the datasheet shows the comparison between the two grades.

So, if you have tight DC requirements, you could always go with B grade. However, you can go with A grade if its specs are within your application critical parameters.

Also, the two grades differ in prices. 

Regards,

Jino

Oh, very good! Thank you very much!

I will buy AD8479 B in your agency.

Regards,

SUN Yajun

2018-07-06 11:00 GMT+08:00 JinoL <analog@analog-vm.hosted.jivesoftware.com>:

EngineerZone <https://ez.analog.com/?et=watches.email.thread>

Re: Search for a Differential Line Receiver

reply from JinoL

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Hi Jino,

       I have consulted almost all agents of Analog Devices for AD8479 BRZ, but all of them don't have the product in stock. And I can receive AD8479 BRZ only after 22 September, 2018. It is too late.
      So do you know there are other replacements for the AD8479 BRZ or SSM2141 with high input voltage range?

Thank you very much!

Regards,

SUN Yajun

Hi Sun,

Apologies for late response. These are the possible Difference Amplifiers for your application. Please have a look. Selection Table for Difference Amplifiers | Parametric Search | Analog Devices 

Regards,
Jino

Hi Jino,

      Thank you very much for your reply!

      I found my goal product in your website and there are many products

in stock (AD629). I will purchase and test them.

      If any question, I shall contact you.

Thank you. You are so nice!

Regards,

SUN Yajun

2018-08-10 11:05 GMT+08:00 JinoL <analog@analog-vm.hosted.jivesoftware.com>:

EngineerZone <https://ez.analog.com/?et=watches.email.thread>

Re: Search for a Differential Line Receiver

reply from JinoL

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