24V single ended to diffential buffer

[flote21]

Hello guys!!!

I have to design a signal conditioning circuit to buffer 24V square single ended signal con convert them into differential signaling. The maximum working frequency is 9 KHz. And I ma wondering if there is an IC solution with all of these functionalities...

PS: I need to buffer 6 digital square signals.

Thanks in advance!

 

[HTA]

Hi flote21,

there are 24V differential line driver with three channel per iC which might fit, like the iC-DL ( https://www.ichaus.de/keyword/24 V, 5 V Line Drivers ).

Enjoy your design work!

 

[KlausST]

Hi,

What is the differential signal voltage level? 24V too?

Look for OL7272...if it fits your needs. There are similar others, but i don't have part names in mind.


Klaus

 

[flote21]

Hi guyss!!

Thanks for the answers!!

Yes i am looking something exactly like OL7272 or ET7272 but I dont know where to buy them...Providers like Digikey, mouser, RS-Online or Farnell dont have this part in stock...Anyboady know where can i buy this part and the price (aprox.)?

Thanks!

 

[CataM]

https://es.aliexpress.com/item/2Pcs-OL7272LF-OL7272/32542290972.html?spm=2114.43010308.4.1.3c6HBR
6.03 € each.

https://www.ebay.com/itm/1pcs-OPTOLAB-SOP-16-OL7272LF-OL7272-New-Good-Quality-/171907518616
6.88 $.
Or maybe you want it direct from source?

 

[HTA]

A 7272 pin compatible devices with four drivers per package come from Avago and iC-Haus. There is the .

Enjoy your design work!

 

[flote21]

The one from AVAGO (AEIC-7272-S16) fits perfect and I can also find it in RS-Online. however reading the datasheet it is not clear for me the VCC_BIAS pin and the ENABLE pin. What do they exactly mean? Is it possible to supply the VCC_BIAS with 24V too or maximum are 5V? Respecting to ENABLE pin, It it possible to control the enable pin with 24V too, or Would I break the component?

thanks in advance!

 

[HTA]

According to the data sheet, there in an internal regulator which supplies the internal logic with min. 3-3.3V. And Vcc Bias can be 3.5V to 30V. The output driver are connected to VccD, which can be 4.5V to 30V. The ENABLE pin activates all driver when it's input level is below 0.8V(active low). What is not specified in the data sheet is the maximum high level input voltage at Ain, Bin, Cin, Din and EN-. To be save I would use 5V as a maximum or have Avago confirming the Vihmax level.

Enjoy your design work!

 

[flote21]

I will ask to the manufacturer then.

Thank!!!