AD5339ARMZ Analog Devices Inc, AD5339ARMZ Datasheet - Page 13

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AD5339ARMZ

Manufacturer Part Number
AD5339ARMZ
Description
Dual 12Bit DAC, 2Wire ITF 2.5v -5.5V I.C
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5339ARMZ

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TERMINOLOGY
Relative Accuracy (Integral Nonlinearity, INL)
For the DAC, relative accuracy, or integral nonlinearity (INL),
is a measure, in LSBs, of the maximum deviation from a straight
line passing through the endpoints of the DAC transfer function.
Typical INL vs. code plots can be seen in Figure 4, Figure 5, and
Figure 6.
Differential Nonlinearity (DNL)
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 mono-
tonicity. This DAC is guaranteed monotonic by design. Typical
DNL vs. code plots can be seen in Figure 7, Figure 8, and
Figure 9.
Offset Error
A measure of the offset error of the DAC and the output
amplifier, expressed as a percentage of the full-scale range.
Gain Error
A measure of the span error of the DAC. It is the deviation in
slope of the actual DAC transfer characteristic from the ideal,
expressed as a percentage of the full-scale range.
Offset Error Drift
A measure of the change in offset error with changes in
temperature. It is expressed in (ppm of full-scale range)/°C.
Gain Error Drift
A measure of the change in gain error with changes in
temperature. It is expressed in (ppm of full-scale range)/°C.
Power Supply Rejection Ratio (PSRR)
This indicates how the output of the DAC is affected by changes
in the supply voltage. PSRR is the ratio of the change in V
a change in V
in dB. V
DC Crosstalk
The dc change in the output level of one DAC at midscale in
response to a full-scale code change (all 0s to all 1s and vice
versa) and output change of another DAC. It is expressed in μV.
Reference Feedthrough
The ratio of the amplitude of the signal at the DAC output to
the reference input when the DAC output is not being updated.
It is expressed in dB.
REF
is held at 2 V and V
DD
for full-scale output of the DAC. It is measured
DD
is varied ±10%.
OUT
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Major Code Transition Glitch Energy
The energy of the impulse injected into the analog output when
the code in the DAC register changes state. Normally specified
as the area of the glitch in nV-s, it is measured when the digital
code is changed by 1 LSB at the major carry transition (011...11
to 100...00 or 100...00 to 011...11).
Digital Feedthrough
A measure of the impulse injected into the analog output of the
DAC from the digital input pins of the device when the DAC
output is not being updated. Specified in nV-s and measured
with a worst-case change on the digital input pins, such as
changing from all 0s to all 1s or vice-versa.
Digital Crosstalk
The glitch impulse transferred to the output of one DAC at
midscale in response to a full-scale code change (all 0s to all 1s,
or vice versa) in the input register of another DAC. It is
expressed in nV-s.
DAC-to-DAC Crosstalk
The glitch impulse transferred to the output of one DAC due to
a digital code change and subsequent output change of another
DAC. This includes both digital and analog crosstalk. It is
measured by loading one of the DACs with a full-scale code
change (all 0s to all 1s, or vice versa) with the LDAC bit set low
and monitoring the output of another DAC. The energy of the
glitch is expressed in nV-s.
Multiplying Bandwidth
The amplifiers within the DAC have a finite bandwidth. The
multiplying bandwidth is the frequency at which the output
amplitude falls to 3 dB below the input. A sine wave on the
reference (with full-scale code loaded to the DAC) appears on
the output.
Total Harmonic Distortion (THD)
The difference between an ideal sine wave and its attenuated
version using the DAC. The sine wave is used as the reference
for the DAC, and the THD is a measure of the harmonic
distortion present in the DAC output. It is measured in dB.
AD5337/AD5338/AD5339

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