Hello, I am trying to understand the sense amplifier chip implementation for biasing IRF9640.
We have 12V going to the source of a PMOS IRF9640.
Regarding the LE PIN- as seen in the data sheet below we have RC connection.
RC circuit is exponential rise of voltage but in the data sheet they say that we need to keep it high for output latch.
but with gradual increase it will be somewhere in the middle?.
How this RC circuit time makes LE work properly?
Thanks.
https://www.analog.com/media/en/technical-documentation/data-sheets/611912f.pdf
![1719600079840.png 1719600079840.png](https://forum.allaboutcircuits.com/data/attachments/313/313371-b7ffceeb3af689a792e7eea6ed39daaa.jpg)
![1719600100410.png 1719600100410.png](https://forum.allaboutcircuits.com/data/attachments/313/313372-1c6bb6a29b9c668f2c5d47a61b7349f7.jpg)
![1719600131932.png 1719600131932.png](https://forum.allaboutcircuits.com/data/attachments/313/313373-5e2bd48a249b7257c4caa6a71e6e86bb.jpg)
![1719600161316.png 1719600161316.png](https://forum.allaboutcircuits.com/data/attachments/313/313374-b4933f8346ea97f43b7331622dde7738.jpg)
We have 12V going to the source of a PMOS IRF9640.
Regarding the LE PIN- as seen in the data sheet below we have RC connection.
RC circuit is exponential rise of voltage but in the data sheet they say that we need to keep it high for output latch.
but with gradual increase it will be somewhere in the middle?.
How this RC circuit time makes LE work properly?
Thanks.
https://www.analog.com/media/en/technical-documentation/data-sheets/611912f.pdf
![1719600079840.png 1719600079840.png](https://forum.allaboutcircuits.com/data/attachments/313/313371-b7ffceeb3af689a792e7eea6ed39daaa.jpg)
![1719600100410.png 1719600100410.png](https://forum.allaboutcircuits.com/data/attachments/313/313372-1c6bb6a29b9c668f2c5d47a61b7349f7.jpg)
![1719600131932.png 1719600131932.png](https://forum.allaboutcircuits.com/data/attachments/313/313373-5e2bd48a249b7257c4caa6a71e6e86bb.jpg)
![1719600161316.png 1719600161316.png](https://forum.allaboutcircuits.com/data/attachments/313/313374-b4933f8346ea97f43b7331622dde7738.jpg)