LM3914

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SNVS761B – JANUARY 2000 – REVISED MARCH 2013

DEFINITION OF TERMS

Accuracy: The difference between the observed threshold voltage and the ideal threshold voltage for each

comparator. Specified and tested with 10V across the internal voltage divider so that resistor ratio

matching error predominates over comparator offset voltage.

Adjust Pin Current: Current flowing out of the reference adjust pin when the reference amplifier is in the linear

region.

to produce it for a comparator in the linear region.

Dropout Voltage: The voltage measured at the current source outputs required to make the output current fall

by 10%.

Input Bias Current: Current flowing out of the signal input when the input buffer is in the linear region.

as measured at the current source outputs. As the forward voltage of an LED does not change

significantly with a small change in forward current, this is equivalent to changing the voltage at the LED

anodes by the same amount.

Line Regulation: The average change in reference output voltage over the specified range of supply voltage

Offset Voltage: The differential input voltage which must be applied to each comparator to bias the output in

the linear region. Most significant error when the voltage across the internal voltage divider is small.

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