Datasheet

AD7321 Data Sheet
Rev. B | Page 4 of 36
B Version
Parameter
1
Min Typ Max Unit Test Conditions/Comments
DC ACCURACY
4
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 Nonlinearity
2
±1.1
LSB
Differential mode; V
CC
= 3 V to 5.25 V, typ for
V
CC
= 2.7 V
±1 LSB
Single-ended/pseudo differential mode, V
CC
=
3 V to 5.25 V, typ for V
CC
= 2.7 V
−0.7/+1.2 LSB
Single ended/pseudo differential mode
LSB = FSR/8192
Differential Nonlinearity
2
−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 Error
2, 5
−0.085/+0.122 %FSR Equates to −7/+10 LSBs
Offset Error Match
2,5
±0.006 %FSR Equates to ±0.5 LSBs
Gain Error
2, 5
±0.171 %FSR Equates to ±14 LSBs
Gain Error Match
2, 5
±0.006 %FSR Equates to ±0.5 LSBs
Positive Full-Scale Error
2, 6
±0.085
%FSR
Equates to ±7 LSBs
Positive Full-Scale Error
Match
2, 6
±0.006 %FSR Equates to ±0.5 LSBs
Bipolar Zero Error
2, 6
±0.092 %FSR Equates to ±7.5 LSBs
Bipolar Zero Error Match
2, 6
±0.006 %FSR Equates to ±0.5 LSBs
Negative Full-Scale Error
2, 6
±0.073 %FSR Equates to ±6 LSBs
Negative Full-Scale Error
Match
2, 6
±0.006 %FSR Equates to ±0.5 LSBs
Single-ended/pseudo differential mode
LSB = FSR/4096
Offset Error
2, 5
−0.098/+0.22 %FSR Equates to −4/+9 LSBs
Offset Error Match
2, 5
±0.015
%FSR
Equates to ±0.6 LSBs
Gain Error
2, 5
±0.195 %FSR Equates to ±8 LSBs
Gain Error Match
2, 5
±0.012 %FSR Equates to ±0.5 LSBs
Positive Full-Scale Error
2, 6
±0.098 %FSR Equates to ±4 LSBs
Positive Full-Scale Error
Match
2, 6
±0.012 %FSR Equates to ±0.5 LSBs
Bipolar Zero Error
2, 6
±0.208
%FSR
Equates to ±8.5LSBs
Bipolar Zero Error Match
2, 6
±0.012 %FSR Equates to ±0.5 LSBs
Negative Full-Scale Error
2, 6
±0.098 %FSR Equates to ±4 LSBs
Negative Full-Scale Error
Match
2, 6
±0.012 %FSR Equates to ±0.5 LSBs