Hello,
My customer was wondering the purposes of the following 2 HPFs. Would you please give me your comments?
1. On-Chip High-Pass Filter:0.91Hz shown on top page of the datasheet.
-> Is it for DC cut?
2. C1, C2: A 1-μF electrolytic capacitor gives 2.7 Hz (τ = 1 μF × 60 kΩ) cutoff frequency for the input HPF in normal operation shown on page 19.
-> Why did you choose 2.7Hz for the cutoff frequency?
Best Regards,
Yoshikazu Kawasaki
