hello
I am trying to use the filter max7480, I made the circuit as per the datasheet. But i am getting nothing in the ouput. I tried capacitors in the clocking for internal clocking and also external clocking. I tryied adding a 10k capacitor at the ouput but no changes. Can someone help me making this chip working.
thanks
ken
With a 1000pf capacitor on the clock pin check that it is oscillating. If not check the power supply, try a new chip, check the shutdown and DS pins with a multimeter with the ground lead actually on pin 3, shutdown should be at 5v, DS at 0v etc
How are you applying a signal to the input? You have to make sure the input signal stays within the chip supply rails. You will damage the chip if you apply a signal that swings negative relative to the chip ground or if you apply a low impedance signal when the chip does not have power. eg connecting a signal generator with a DC coupled output may force the input pin relative to ground.
Bob
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