A

2

·

A

1

=

A A

LMV225, LMV226, LMV228

SNWS013L – AUGUST 2003 – REVISED MARCH 2013

www.ti.com

The maximum error for this approximation occurs at the geometric mean of a gain section, which is e.g. for the

third segment:

(10)

The size of the error increases with distance between the thresholds.

LAYOUT CONSIDERATIONS

For a proper functioning part a good board layout is necessary. Special care should be taken for the series

the resistor may significantly impact the realized attenuation. The effective attenuation will be lower than

components in series instead of using a single component.

28

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