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參數資料
| 型號： | MC10319P |
| 廠商： | MOTOROLA INC |
| 元件分類： | ADC |
| 英文描述： | Hex Buffers/Drivers With Open-Collector High-Voltage Outputs 14-CDIP -55 to 125 |
| 中文描述： | 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數： | 18/20頁 |
| 文件大?。?/td> | 338K |
| 代理商： | MC10319P |
MC10319
GLOSSARY
18
MOTOROLA ANALOG IC DEVICE DATA
Aperture Delay
– The time difference between the sampling
signal (typically a clock edge) and the actual analog signal
converted. The actual signal converted may occur before or
after the sampling signal, depending on the internal
configuration of the converter.
Bipolar Input
– A mode of operation whereby the analog
input (of an A/D), or output (of a DAC), includes both
negative and positive values. Examples are – 1.0 to + 1.0 V,
– 5.0 to + 5.0 V, – 2.0 to + 8.0 V, etc.
Bipolar Offset Error
– The difference between the actual
and ideal locations of the 00H to 01H transition, where the
ideal location is 1/2 LSB above the most negative
reference voltage.
Bipolar Zero Error
– The error (usually expressed in LSBs)
of the input voltage location (of an A/D) of the 80H to 81H
transition. The ideal location is 1/2 LSB above zero volts in
the case of an A/D setup for a symmetrical bipolar input
(e.g., – 1.0 to + 1.0 V).
Differential Nonlinearity
– The maximum deviation in the
actual step size (one transition level to another) from the ideal
step size. The ideal step size is defined as the Full Scale
Range divided by 2n (n = number of bits). This error must be
within
±
1 LSB for proper operation.
ECL
– Emitter coupled logic.
Full Scale Range (Actual)
– The difference between the
actual minimum and maximum end points of the analog input
(of an A/D).
Full Scale Range (Ideal)
– The difference between the
actual minimum and maximum end points of the analog input
(of an A/D), plus one LSB.
Gain Error
– The difference between the actual and
expected gain (end point to end point), with respect to the
reference, of a data converter. The gain error is usually
expressed in LSBs.
Grey Code
– Also known as reflected binary code it is a
digital code such that each code differs from adjacent codes
by only one bit. Since more than one bit is never changed at
each transition, race condition errors are eliminated.
Integral Nonlinearity
– The maximum error of an A/D, or
DAC, transfer function from the ideal straight line connecting
the analog end points. This parameter is sensitive to
dynamics, and test conditions must be specified in order to
be meaningful. This parameter is the best overall indicator of
the device
′
s performance.
Line Regulation
– The ability of a voltage regulator to
maintain a certain output voltage as the input to the regulator
is varied. The error is typically expressed as a percent of the
nominal output voltage.
Load Regulation
– The ability of a voltage regulator to
maintain a certain output voltage as the load current is varied.
The error is typically expressed as a percent of the nominal
output voltage.
LSB
– Least Significant Bit. It is the lowest order bit of a
binary code.
Monotonicity
– The characteristic of the transfer function
whereby increasing the input code (of a DAC), or the input
signal (of an A/D), results in the output never decreasing.
MSB
– Most Significant Bit. It is the highest order bit of a
binary code.
Natural Binary Code
– A binary code defined by:
N = An2n +
. . .
+ A323 + A222 + A121 + A020
where each “A” coefficient has a value of 1 or 0. Typically, all
zeroes correspond to a zero input voltage of an A/D, and all
ones correspond to the most positive input voltage.
Nyquist Theorem
– See Sampling Theorem.
Offset Binary Code
– Applicable only to bipolar input (or
output) data converters, it is the same as Natural Binary,
except that all zeros correspond to the most negative input
voltage (of an A/D), while all ones correspond to the most
positive input.
Power Supply Sensitivity
– The change in a data
converter
′
s performance with changes in the power supply
voltage(s). This parameter is usually expressed in percent of
full scale versus
V.
Quantitization Error
– Also known as digitization erroror
uncertainty. It is the inherent error involved in digitizing an
analog signal due to the finite number of steps at the digital
output versus the infinite number of values at the analog
input. This error is a minimum of
±
1/2 LSB.
Resolution
– The smallest change which can be discerned
by an A/D converter, or produced by a DAC. It is usually
expressed as the number of bits (n), where the converter has
2n possible states.
Sampling Theorem
– Also known as the Nyquist Theorem.
It states that the sampling frequency of an A/D must be no
less that 2x the highest frequency (of interest) of the analog
signal to be digitized in order to preserve the information of
that analog signal.
Unipolar Input
– A mode of operation whereby the analog
input range (of an A/D), or output range (of a DAC), includes
values of a signal polarity. Examples are 0 to + 2.0 V, 0 to
– 5.0 V, 2.0 to 8.0 V, etc.
Unipolar Offset Error
– The difference between the actual
and ideal locations of the 00H to 01H transition, where the
ideal location is 1/2 LSB above the most negative
input voltage.
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