Other Parts Discussed in Thread: OPA837, OPA846, OPA2837
Hi TI
1. I plan to use OPA857 in a wide input range application and I intend to control the gain in real time.
What is the response time at output when switching the Tz from 20k to 5k?
Are there any other parameters that might be affected by this?
2. The BW also has to be limited to 80MHz max. What is the best way of reducing the BW? a capacitor at the output or in the feedback between the Out to In pins? How would be the Frequency response, flat or with some peaking?
3. Can we use only the OUT pin in single ended application and use the output signal between the OUT pin and GND? The effective Tz would then be calculated as a divider between Zlod and internal 25ohm?
Thanks,
Marcela Faina
Sr Electronics Eng