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AD7321 Datasheet(PDF) 5 Page - Analog Devices

Part # AD7321
Description  500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7321 Datasheet(HTML) 5 Page - Analog Devices

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AD7321
Data Sheet
Rev. B | Page 4 of 36
B Version
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
DC ACCURACY4
Differential mode LSB = FSR/8192
Single-ended/pseudo differential mode
LSB = FSR/4096, unless otherwise noted
Resolution
13
Bits
No Missing Codes
12-bit plus
sign (13 bits)
Bits
Differential mode
11-bit plus
sign (12 bits)
Bits
Single-ended/pseudo differential mode
Integral Nonlinearity2
±1.1
LSB
Differential mode; VCC = 3 V to 5.25 V, typ for
VCC = 2.7 V
±1
LSB
Single-ended/pseudo differential mode, VCC =
3 V to 5.25 V, typ for VCC = 2.7 V
−0.7/+1.2
LSB
Single ended/pseudo differential mode
LSB = FSR/8192
Differential Nonlinearity2
−0.9/+1.2
LSB
Differential mode; guaranteed no missing
codes to 13 bits
±0.9
LSB
Single-ended mode; guaranteed no missing
codes to 12 bits
−0.7/+1
LSB
Single ended/pseudo differential mode,
LSB = FSR/8192
Differential mode LSB = FSR/8192
Offset Error2, 5
−0.085/+0.122
%FSR
Equates to −7/+10 LSBs
Offset Error Match2,5
±0.006
%FSR
Equates to ±0.5 LSBs
Gain Error2, 5
±0.171
%FSR
Equates to ±14 LSBs
Gain Error Match2, 5
±0.006
%FSR
Equates to ±0.5 LSBs
Positive Full-Scale Error2, 6
±0.085
%FSR
Equates to ±7 LSBs
Positive Full-Scale Error
Match2,6
±0.006
%FSR
Equates to ±0.5 LSBs
Bipolar Zero Error2, 6
±0.092
%FSR
Equates to ±7.5 LSBs
Bipolar Zero Error Match2, 6
±0.006
%FSR
Equates to ±0.5 LSBs
Negative Full-Scale Error2, 6
±0.073
%FSR
Equates to ±6 LSBs
Negative Full-Scale Error
Match2,6
±0.006
%FSR
Equates to ±0.5 LSBs
Single-ended/pseudo differential mode
LSB = FSR/4096
Offset Error2, 5
−0.098/+0.22
%FSR
Equates to −4/+9 LSBs
Offset Error Match2, 5
±0.015
%FSR
Equates to ±0.6 LSBs
Gain Error2, 5
±0.195
%FSR
Equates to ±8 LSBs
Gain Error Match2, 5
±0.012
%FSR
Equates to ±0.5 LSBs
Positive Full-Scale Error2, 6
±0.098
%FSR
Equates to ±4 LSBs
Positive Full-Scale Error
Match2,6
±0.012
%FSR
Equates to ±0.5 LSBs
Bipolar Zero Error2, 6
±0.208
%FSR
Equates to ±8.5LSBs
Bipolar Zero Error Match2, 6
±0.012
%FSR
Equates to ±0.5 LSBs
Negative Full-Scale Error2, 6
±0.098
%FSR
Equates to ±4 LSBs
Negative Full-Scale Error
Match2, 6
±0.012
%FSR
Equates to ±0.5 LSBs


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