saint gillis
Well-known member
Hey there!
I'm using a 1646 output balanced driver in a circuit, directly driven from an op amp without any resistive component between them.
The 1646 chip is properly decoupled with a pair of 100n caps close to vcc and vee pins.
I noticed that when I put the 1646 in the circuit it brings something like 20mV (peak to peak) HF noise in both PSU rails (+/-15v)
When I plug a second 1646 it brings 20mV additional noise in the PSU rails (40mV total noise in both PSU rails when both chips are engaged) ..
Does it sound normal?
I'm using a 1646 output balanced driver in a circuit, directly driven from an op amp without any resistive component between them.
The 1646 chip is properly decoupled with a pair of 100n caps close to vcc and vee pins.
I noticed that when I put the 1646 in the circuit it brings something like 20mV (peak to peak) HF noise in both PSU rails (+/-15v)
When I plug a second 1646 it brings 20mV additional noise in the PSU rails (40mV total noise in both PSU rails when both chips are engaged) ..
Does it sound normal?