Hi guys,
I've recently replaced eight channels of opamps in my Tascam M-3700 from JRC 4580D to OPA2604 on the input A PCB. I've read that to prevent to 2604 chips from oscillating, I would need to connect a 0.1uF bypass cap to pins 4 and 8 and then to a common ground.
There appears to me to be 0.01uF bypass caps on pins 4 and 8 already (see the bottom right corner of the linked schematic). Why then should I add another 0.1uF capacitor as from my limited understanding this would total the capacitance to 0.11uF. Is the difference between 0.1uF and 0.11uF going to be that big of a deal?
Here's the schematic:
http://img11.imageshack.us/img11/4559/tascaminputa.jpg
Thanks,
Kris
I've recently replaced eight channels of opamps in my Tascam M-3700 from JRC 4580D to OPA2604 on the input A PCB. I've read that to prevent to 2604 chips from oscillating, I would need to connect a 0.1uF bypass cap to pins 4 and 8 and then to a common ground.
There appears to me to be 0.01uF bypass caps on pins 4 and 8 already (see the bottom right corner of the linked schematic). Why then should I add another 0.1uF capacitor as from my limited understanding this would total the capacitance to 0.11uF. Is the difference between 0.1uF and 0.11uF going to be that big of a deal?
Here's the schematic:
http://img11.imageshack.us/img11/4559/tascaminputa.jpg
Thanks,
Kris