AD5724R Ver la hoja de datos (PDF) - Analog Devices

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AD5724R

Complete, Quad, 12-/14-/16-Bit, Serial Input, Unipolar/Bipolar Voltage Output DACs

Analog Devices 

Data Sheet

DC Crosstalk

DC crosstalk is the dc change in the output level of one DAC in

response to a change in the output of another DAC. It is measured

with a full-scale output change on one DAC while monitoring

another DAC. It is expressed in LSBs.

Digital Crosstalk

Digital crosstalk is a measure of the impulse injected into the

analog output of one DAC from the digital inputs of another

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.

DAC-to-DAC Crosstalk

DAC-to-DAC crosstalk is 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 and vice versa)

with LDAC low and monitoring the output of another DAC.

The energy of the glitch is expressed in nV-sec.

AD5724R/AD5734R/AD5754R

Voltage Reference TC

Voltage reference TC is a measure of the change in the reference

output voltage with a change in temperature. The reference TC

is calculated using the box method, which defines the TC as the

maximum change in the reference output over a given tempera-

ture range expressed in ppm/°C as follows;



TC = 

VREFmax − VREFmin



 ×106

VREFnom × TempRange 

where:

VREFmax is the maximum reference output measured over the

total temperature range.

VREFmin is the minimum reference output measured over the total

temperature range.

VREFnom is the nominal reference output voltage, 2.5 V.

TempRange is the specified temperature range, either 0°C to

85°C or −40°C to +85°C.

Rev. G | Page 19 of 33

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