LTC6244 - Peak detector (hold time)

Hi,

About the "Improved Peak Detector" available here:

https://www.analog.com/en/technical-articles/ltc6244-high-speed-peak-detector.html

Demo Circuit: https://www.analog.com/media/en/simulation-models/LTspice-demo-circuits/LTC6244_PeakDetector_Improved.asc

I would like to measure the DC with an voltmeter, so the holding time must be, at least, 3~5 seconds, and the LTSpice show me a holding time of only 1~2 ms.

I tried increase the capacitor (C1) value, as well R4 and R6, but with no success.

May someone give me a help about how to increase the holding time to 3~5 seconds?

Thanks in advance,

Renato