AN2438 Freescale Semiconductor / Motorola, AN2438 Datasheet - Page 18

• Manufacturer Part Number: AN2438
• Description: ADC Definitions and Specifications
• Manufacturer: Freescale Semiconductor / Motorola

AN2438/D
Summary of Specification Parameters
18
∆V
10 kΩ. The maximum value of 10 kΩ for R
the worst case condition of maximum ∆V
The following terms and simplified definitions will be used to describe
Motorola’s future ADC’s:
SAMP
Freescale Semiconductor, Inc.
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Zero-Scale Voltage (V
range (equal to V
Full-Scale Voltage (V
range (equal to V
Least Significant Bit (LSB) — An ideal code width, or the valid input
range divided by the number of possible codes.
Resolution (N) — The number of bits in the output conversion; defines
the number of possible codes.
Quantization Error (E
Function and the Ideal Straight Line Transfer Function as a result of the
quantization of the output, measured in LSB.
Differential Non-Linearity (DNL) — The error between the current
code width and the ideal code width, measured in LSB.
Integral Non-Linearity (INL) — The error between the actual and the
corresponding Adjusted Transfer Function transition voltages,
measured in LSB.
Zero-Scale Error (E
transition voltages, measured in LSB.
Full-Scale Error (E
transition voltages, measured in LSB.
(Alternatively to E
range the Actual Transfer Function covers from first to last transition and
that of the Ideal Transfer Function, measured in LSB.
Total Unadjusted Error (E
Transfer Function and the Ideal Straight-Line Transfer Function,
measured in LSB.
and minimum C
ADC Definitions and Specifications
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REFL
REFH
AS
FS
FS
, R
ZS
) Gain Error (E
), measured in Volts.
) — The error between the actual and ideal last
), measured in Volts.
FS
Q
) — The error between the actual and ideal first
AS
ZS
) — The error between the Ideal Transfer
) — The voltage at the upper end of the input
) — The voltage at the bottom end of the input
must be less than the maximum value of
TUE
) — The error between the Actual
SAMP
AS
G
) — The error between the voltage
is to ensure low sampling error in
and minimum C
AS
.
MOTOROLA