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The inductive nature of the transducer load can also result in overshoot on one or both edges, clamped by

the parasitic diodes to ground and VDD in each case. From an EMI standpoint, this is an aggressive

waveform that can radiate or conduct to other components in the system and cause interference. It is

essential to keep the power and output traces short and well shielded if possible. Use of ground planes,

beads, and micro-strip layout techniques are all useful in preventing unwanted interference.

As the distance from the HM2010 and the speaker increase, the amount of EMI radiation will increase since

the output wires or traces acting as antenna become more efficient with length. What is acceptable EMI is

highly application specific. Ferrite chip inductors placed close to the HM2010 may be needed to reduce EMI

radiation. The value of the ferrite chip is very application specific.