I have a Echo Processor IC PT2399, on the data sheet they have A Ground & D Ground Symbols on one of the Schematics. ATTACHED.
Could someone help me out with this as I don't fully understand the grounding for the circuit.
I have breadboarded the circuit & have The D Ground symbols to Battery Ground & the A ground Symbols to a rail of their own--basically all connected together but not to the Battery ground.
The circuit doesn't appear to work the way I have it, when I input a sinewave I get an amplified sinewave out but no echo to the output signal.
I was expecting to see a sinewave output with another following shortly after it, but I have not viewed this particular signal before so I don't really know what I should get when it is working correctly.
Cheers
Could someone help me out with this as I don't fully understand the grounding for the circuit.
I have breadboarded the circuit & have The D Ground symbols to Battery Ground & the A ground Symbols to a rail of their own--basically all connected together but not to the Battery ground.
The circuit doesn't appear to work the way I have it, when I input a sinewave I get an amplified sinewave out but no echo to the output signal.
I was expecting to see a sinewave output with another following shortly after it, but I have not viewed this particular signal before so I don't really know what I should get when it is working correctly.
Cheers