Intel 87C196CB, 8XC196NT user manual earity errors, See off-isolation, code width

Models: 8XC196NT 87C196CB

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code width

 

 

GLOSSARY

code width

The voltage change corresponding to the difference

 

 

between two adjacent code transitions. Code width

 

 

deviations cause differential nonlinearity and nonlin-

 

 

earity errors.

crosstalk

See off-isolation.

DC input leakage

Leakage current from an analog input pin to ground.

deassert

The act of making a signal inactive (disabled). The

 

 

polarity (high or low) is defined by the signal name.

 

 

Active-low signals are designated by a pound symbol

 

 

(#) suffix; active-high signals have no suffix. To

 

 

deassert RD# is to drive it high; to deassert ALE is to

 

 

drive it low.

differential nonlinearity

The difference between the actual code width and the

 

 

ideal one-LSB code width of the terminal-based

 

 

characteristic of an A/D converter. It provides a

 

 

measure of how much the input voltage may have

 

 

changed in order to produce a one-count change in the

 

 

conversion result. Differential nonlinearity is a

 

 

measure of local code-width error; nonlinearity is a

 

 

measure of overall code-transition error.

doping

The process of introducing a periodic table Group III

 

 

or Group V element into a Group IV element (e.g.,

 

 

silicon). A Group III impurity (e.g., indium or

 

 

gallium) results in a p-typematerial. A Group V

 

 

impurity (e.g., arsenic or antimony) results in an n-

 

 

type material.

double-word

Any 32-bit unit of data.

DOUBLE-WORD

An unsigned, 32-bit variable with values from 0

 

 

through 232–1.

EPA

Event processor array. An integrated peripheral that

 

 

provides high-speed input/output capability.

EPROM

Erasable, programmable read-only-memory.

ESD

Electrostatic discharge.

feedthrough

The attenuation from an input voltage on the selected

 

 

channel to the A/D output after the sample window

 

 

closes. The ability of the A/D converter to reject an

 

 

input on its selected channel after the sample window

 

 

closes.

 

 

Glossary-3

 

 

 

 

 

Page 142
Image 142
Intel 87C196CB, 8XC196NT earity errors, See off-isolation, conversion result. Differential nonlinearity is a, code width