TLV7011: We want to add delay function circuit at the TLV7011 output end to get several ms delay. Do you have any suggestion circuit?

For rising or for falling edges? What accuracy do you need?

Hi Clemens,

What do you mean about the accuracy, such as 1ms or 0.5ms?

And we want to add delay on the rising edge and no delay on the falling edge. Do you have any suggestion?

Hale,

There are a couple options. The most obvious is to use the dual TLV7012. The 2nd comparator could be like this. Much longer delay on rising and much less delay on falling.

Hi Ron,

Do you have any simulation to share? And in this schematics, I guess the principle is to use RC circuit to delay Vinp level. Is that right?

Hale,

TI-Tina circuit

Delay rising edge.TSC

Hale Tan said:

I guess the principle is to use RC circuit

Exactly. Vinm can be a voltage divider from Vs supply.

Hi Ron,

I am a little confuse why you mentioned TLV7012 with 2nd comparator. Could you help explain it more?

Ron,

Do we have any comparator with delay?

Hale,

Hale Tan said:

We want to add delay function circuit at the TLV7011 output end to get several ms delay

So you started with this. This is the 1st TLV7011

So I added a delay, the whole thing is...

Hale Tan said:

Do we have any comparator with delay?

The open collector versions will rise slowly with a resistor and a capacitor to ground. In other words a slow rise time, but it starts on time, not delayed.

Ron,

Got it. Do we have any other solution with just 1 comparator?

Ron Michallick said:

The open collector versions will rise slowly with a resistor and a capacitor to ground. In other words a slow rise time, but it starts on time, not delayed.

So we don't have a comparator with delay function?

Hale,

No, there isn't a big market for that.  There are 555 timers, NE555, LMC555, TLC555.