FN6287 Rev 0.00

Page 10 of 11

December 18, 2006

ISL55020

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well bypassed to reduce the risk of oscillation. For normal

single supply operation, where the V- pin is connected to the

ground plane, a single 4.7µF tantalum capacitor in parallel

with a 0.1µF ceramic capacitor from V+ to GND will suffice.

This same capacitor combination should be placed at each

supply pin to ground if split supplies are to be used. In this

case, the V- pin becomes the negative supply rail.

For good AC performance, parasitic capacitance should be

kept to minimum. Use of wire wound resistors should be

avoided because of their additional series inductance. Use

of sockets should also be avoided if possible. Sockets add

parasitic inductance and capacitance that can result in

compromised performance. Minimizing parasitic capacitance

at the amplifier's inverting input pin is very important. The

feedback resistor should be placed very close to the

inverting input pin. Strip line design techniques are

recommended for the signal traces.