AD5422AREZ Analog Devices Inc, AD5422AREZ Datasheet - Page 24

• Manufacturer Part Number: AD5422AREZ
• Description: IC DAC 16BIT SER 24TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD5422AREZ

• Data Interface: MICROWIRE™, Serial, SPI™
• Design Resources: 16-Bit Fully Isolated Output Module Using AD5422 and ADuM1401 (CN0065) Simplified 16-Bit Voltage Output and 4 mA-to-20 mA Output Solution Using AD5422 (CN0077)
• Settling Time: 25µs
• Number Of Bits: 16
• Number Of Converters: 1
• Voltage Supply Source: Analog and Digital, Dual ±
• Power Dissipation (max): 950mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP Exposed Pad, 24-eTSSOP, 24-HTSSOP
• Resolution (bits): 16bit
• Sampling Rate: 40kSPS
• Input Channel Type: Serial
• Supply Voltage Range - Analogue: -26.4V To 0V, 10.8V To 40V
• Supply Voltage Range - Digital: 2.7V To
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD5412/AD5422
TERMINOLOGY
Relative Accuracy or Integral Nonlinearity (INL)
For the DAC, relative accuracy, or INL, is a measure of the
maximum deviation, in LSBs, from a straight line passing
through the endpoints of the DAC transfer function. A typical
INL vs. code plot can be seen in Figure 17.
Differential Nonlinearity (DNL)
DNL is the difference between the measured change and the
ideal 1 LSB change between any two adjacent codes. A specified
differential nonlinearity of ±1 LSB maximum ensures monoton-
icity. This DAC is guaranteed monotonic by design. A typical
DNL vs. code plot can be seen in Figure 19.
Monotonicity
A DAC is monotonic if the output either increases or remains
constant for increasing digital input code. The AD5412/AD5422
are monotonic over their full operating temperature range.
Bipolar Zero Error
Bipolar zero error is the deviation of the analog output from the
ideal half-scale output of 0 V when the DAC register is loaded
with 0x8000 (straight binary coding) or 0x0000 (twos comple-
ment coding). A plot of bipolar zero error vs. temperature can
be seen in Figure 28.
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 a measure of the output error when full-scale
code is loaded to the DAC register. Ideally, the output should be
full-scale − 1 LSB. Full-scale error is expressed in percent of
full-scale range (% FSR).
Negative Full-Scale Error/Zero-Scale Error
Negative full-scale error is the error in the DAC output voltage
when 0x0000 (straight binary coding) or 0x8000 (twos comple-
ment coding) is loaded to the DAC register. Ideally, the output
voltage should be negative full-scale − 1 LSB. A plot of zero-
scale error vs. temperature can be seen in Figure 30.
Zero-Scale Temperature Coefficient (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.
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 full-scale input change.
Rev. C | Page 24 of 40
Slew Rate
The slew rate of a device is a limitation in the rate of change
of the output voltage. The output slewing speed of a voltage-
output DAC 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.
Gain Error
Gain error is a measure of the span error of the DAC. It is the
deviation in slope of the DAC transfer characteristic from the
ideal expressed in % FSR. A plot of gain error vs. temperature
can be seen in Figure 29.
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.
Total Unadjusted Error (TUE)
TUE is a measure of the output error taking all the various
errors into account, namely INL error, offset error, gain error,
and output drift over supplies, temperature, and time. TUE is
expressed in % FSR.
Current Loop Voltage Compliance
The maximum voltage at the I
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 AD5412/AD5422 is powered on. It is specified
as the area of the glitch in nV-sec. See Figure 41 and Figure 58.
Digital-to-Analog Glitch Impulse
Digital-to-analog glitch impulse is the impulse injected into the
analog output when the input code in the DAC register changes
state, but the output voltage remains constant. It is normally
specified as the area of the glitch in nV-sec and is measured
when the digital input code is changed by 1 LSB at the major
carry transition (0x7FFF to 0x8000). See Figure 38 and
Figure 61.
Glitch Impulse Peak Amplitude
Glitch impulse peak amplitude is the peak amplitude of the
impulse injected into the analog output when the input code in
the DAC register changes state. It is specified as the amplitude
of the glitch in millivolt and is measured when the digital input
code is changed by 1 LSB at the major carry transition (0x7FFF
to 0x8000). See Figure 38 and Figure 61.
Digital Feedthrough
Digital feedthrough is a measure of the impulse injected into
the analog output of the DAC from the digital inputs of the
DAC but is measured when the DAC output is not updated.
It is specified in nV-sec and measured with a full-scale code
change on the data bus.
OUT
pin for which the output