I use LTC6994-2 to delay and invert input signal. I want 2s delay between input and inverted output.
However, this is what I get on the output:
Green waveform is input waveform. Output (Blue waveform) is expected to be inverted and delayed version of input signal. However, in my circuit, output goes high at the start and stays that way no matter how input changes.
Figure 6 on pg14 is what I am trying to accomplish.
I followed steps on page 16 in datasheets to select values of resistors:
tdelay/16u <= Ndiv <= tdelay/1u (equation 1) => 125K<=Ndiv<=2M
Selected lowest Ndiv to reduce power consumption => Ndiv = 262,144
I selected corresponding R11/R12 resistors as suggested in datasheet:
I selected Rset from equation given in Step 3 on pg 16 (equation 2):
tdelay = (Ndiv * Rset/50K)*1u
Taking 2s delay and 262,144 Ndiv, Rset = 381.5K
Is there anything that I am doing blatantly wrong here?