How to measure the propagation delay of comparator by hspice

[wangwang96]

same to topic

 

[cinch]

Re: How to measure the propagation delay of comparator by hs

Use .measure statements. U can find few examples in HSpice manual.

cinch

 

[supreet_95]

need to measure from 50% input rising to 50% output rising or similarly for falling edge. Depending on strength of nmos or pmos of final stage, rising or falling prop delay will be decided.
For measures u can see for diff of timestamp when |vin-vout|=0 for first and 2nd time. u will have the option to give rising and falling seperately.
Hope this helps.

 

[Sadegh.j]

Re: How to measure the propagation delay of comparator by hs

You can both read it in Avanwave or use the following code:
(I brought the whole thing in case you want to use it:

"
.meas tran tplh_b1ar trig v(a) td=20ns val='vdd/2' cross=1
+ targ v(out) td=20ns val='vdd/2' cross=1
.meas tran tplh_a1bf trig v(b) td=30ns val='vdd/2' cross=1
+ targ v(out) td=30ns val='vdd/2' cross=1
.meas tran tplh_a1br trig v(b) td=50ns val='vdd/2' cross=1
+ targ v(out) td=50ns val='vdd/2' cross=1
.meas tran tplh_b1af trig v(a) td=60ns val='vdd/2' cross=1
+ targ v(out) td=60ns val='vdd/2' cross=1
.meas tran avgpower AVG power from=1ns to=80ns
.meas tran peakpower MAX power from=1ns to=80ns
"

Check: **broken link removed**

for the link

cheers

 

[northeast1]

Re: How to measure the propagation delay of comparator by hs

same to topic

Use meas statement.