AD5750_12 Datasheet, PDF (22/36 Pages) Analog Devices – Industrial Current/Voltage Output Driver

AD5750/AD5750-1/AD5750-2
TERMINOLOGY
Total Unadjusted Error (TUE)
TUE is a measure of the output error taking all the various
errors into account: INL error, offset error, gain error, and
output drift over supplies, temperature, and time. TUE is
expressed as a percentage of full-scale range (% FSR).
Relative Accuracy or Integral Nonlinearity (INL)
INL is a measure of the maximum deviation, in % FSR, from a
straight line passing through the endpoints of the output driver
transfer function. A typical INL vs. input voltage plot can be
seen in Figure 5.
Bipolar Zero Error
Bipolar zero error is the deviation of the actual vs. ideal half-scale
output of 0 V/0 mA with a bipolar range selected. A plot of
bipolar zero error vs. temperature can be seen in Figure 10.
Bipolar Zero Temperature Coefficient (TC)
Bipolar zero TC is a measure of the change in the bipolar zero error
with a change in temperature. It is expressed in ppm FSR/°C.
Full-Scale Error
Full-scale error is the deviation of the actual full-scale analog
output from the ideal full-scale output. Full-scale error is
expressed as a percentage of full-scale range (% FSR).
Full-Scale Temperature Coefficient (TC)
Full-scale TC is a measure of the change in the full-scale error
with a change in temperature. It is expressed in ppm FSR/°C.
Gain Error
Gain error is a measure of the span error of the output. It is the
deviation in slope of the output transfer characteristic from the
ideal expressed in % FSR. A plot of gain error vs. temperature
can be seen in Figure 11.
Gain Error Temperature Coefficient (TC)
Gain error TC is a measure of the change in gain error with
changes in temperature. Gain error TC is expressed in ppm
FSR/°C.
Data Sheet
Zero-Scale Error
Zero-scale error is the deviation of the actual zero-scale analog
output from the ideal zero-scale output. Zero-scale error is
expressed in millivolts (mV).
Zero-Scale TC
Zero-scale TC is a measure of the change in zero-scale error
with a change in temperature. Zero-scale error TC is expressed
in ppm FSR/°C.
Offset Error
Offset error is a measurement of the difference between the
actual VOUT and the ideal VOUT, expressed in millivolts (mV)
in the linear region of the transfer function. It can be negative
or positive.
Output Voltage Settling Time
Output voltage settling time is the amount of time it takes for
the output to settle to a specified level for a half-scale input change.
Slew Rate
The slew rate of a device is a limitation in the rate of change of the
output voltage. The output slewing speed is usually limited by the
slew rate of the amplifier used at its output. Slew rate is measured
from 10% to 90% of the output signal and is expressed in V/µs.
Current Loop Voltage Compliance
Current loop voltage compliance is the maximum voltage at
the IOUT pin for which the output current is equal to the
programmed value.
Power-On Glitch Energy
Power-on glitch energy is the impulse injected into the analog
output when the AD5750/AD5750-1/AD5750-2 are powered on.
It is specified as the area of the glitch in nV-sec.
Power Supply Rejection Ratio (PSRR)
PSRR indicates how the output is affected by changes in the
power supply voltage.
Rev. D | Page 22 of 36