AD7763BSVZ Analog Devices Inc, AD7763BSVZ Datasheet - Page 10

IC ADC 24BIT S/D 625KSPS 64-TQFP

AD7763BSVZ

Manufacturer Part Number
AD7763BSVZ
Description
IC ADC 24BIT S/D 625KSPS 64-TQFP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7763BSVZ

Data Interface
Serial, SPI™
Number Of Bits
24
Sampling Rate (per Second)
625k
Number Of Converters
1
Power Dissipation (max)
955.5mW
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-TQFP Exposed Pad
Resolution (bits)
24bit
Input Channel Type
Differential
Supply Voltage Range - Analogue
2.375V To 2.625V, 3.15V To 5.25V, 4.75V To 5.25V
Supply Voltage Range -
RoHS Compliant
Sampling Rate
625kSPS
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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AD7763
TERMINOLOGY
Signal-to-Noise Ratio (SNR)
The ratio of the rms value of the actual input signal to the rms
sum of all other spectral components below the Nyquist fre-
quency, excluding harmonics and dc. The value for SNR is
expressed in decibels.
Total Harmonic Distortion (THD)
The ratio of the rms sum of harmonics to the fundamental. For
the AD7763, it is defined as
where:
V
V
to the sixth harmonic.
Nonharmonic Spurious-Free Dynamic Range (SFDR)
The ratio of the rms signal amplitude to the rms value of the
peak spurious spectral component, excluding harmonics.
Dynamic Range
The ratio of the rms value of the full scale to the rms noise
measured with the inputs shorted together. The value for
dynamic range is expressed in decibels.
1
2
, V
is the rms amplitude of the fundamental.
THD
3
, V
4
, V
( )
dB
5
, and V
=
20
log
6
are the rms amplitudes of the second
V
2
2
+
V
3
2
+
V
V
1
4
2
+
V
5
2
+
V
6
2
Rev. A | Page 10 of 32
Integral Nonlinearity (INL)
The maximum deviation from a straight line passing through
the endpoints of the ADC transfer function.
Differential Nonlinearity (DNL)
The difference between the measured and the ideal 1 LSB
change between any two adjacent codes in the ADC.
Zero Error
The difference between the ideal midscale input voltage (0 V)
and the actual voltage producing the midscale output code.
Zero Error Drift
The change in the actual zero error value due to a temperature
change of 1°C. It is expressed as a percentage of full scale at room
temperature.
Gain Error
The first transition (from 100…000 to 100…001) should occur
for an analog voltage 1/2 LSB above the nominal negative full
scale. The last transition (from 011…110 to 011…111) should
occur for an analog voltage 1 1/2 LSB below the nominal full
scale. The gain error is the deviation of the difference between
the actual level of the last transition and the actual level of the
first transition, from the difference between the ideal levels.
Gain Error Drift
The change in the actual gain error value due to a temperature
change of 1°C. It is expressed as a percentage of full scale at
room temperature.

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