AD7321 Analog Devices, AD7321 Datasheet - Page 4

• Manufacturer Part Number: AD7321
• Description: 500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
• Manufacturer: Analog Devices

Specifications of AD7321

• Resolution (bits): 13bit
• # Chan: 2
• Sample Rate: 500kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: Bip 10V,Bip 2.5V,Bip 5.0V,Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

AD7321
Parameter
DC ACCURACY
Resolution
No Missing Codes
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Positive Full-Scale Error
Positive Full-Scale Error
Bipolar Zero Error
Bipolar Zero Error Match
Negative Full-Scale Error
Negative Full-Scale Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Positive Full-Scale Error
Positive Full-Scale Error
Bipolar Zero Error
Bipolar Zero Error Match
Negative Full-Scale Error
Negative Full-Scale Error
Match
Match
Match
Match
2, 6
2, 6
2, 6
2, 6
1
2, 5
2, 5
2, 5
2, 5
4
2, 5
2, 5
2, 6
2, 6
2, 5
2, 5
2
2, 6
2, 6
2
2, 6
2, 6
2, 6
2, 6
Min
13
12-bit plus
sign (13 bits)
11-bit plus
sign (12 bits)
Typ
−0.7/+1.2
−0.7/+1
B Version
Rev. A | Page 4 of 36
Max
±1.1
±1
−0.9/+1.2
±0.9
−0.085/+0.122
±0.006
±0.171
±0.006
±0.085
±0.006
±0.092
±0.006
±0.073
±0.006
−0.098/+0.22
±0.015
±0.195
±0.012
±0.098
±0.012
±0.208
±0.012
±0.098
±0.012
Unit
Bits
Bits
Bits
LSB
LSB
LSB
LSB
LSB
LSB
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
%FSR
Test Conditions/Comments
Differential mode LSB = FSR/8192
Single-ended/pseudo differential mode
LSB = FSR/4096, unless otherwise noted
Differential mode
Single-ended/pseudo differential mode
Differential mode; V
V
Single-ended/pseudo differential mode, V
3 V to 5.25 V, typ for V
Single ended/pseudo differential mode
LSB = FSR/8192
Differential mode; guaranteed no missing
codes to 13 bits
Single-ended mode; guaranteed no missing
codes to 12 bits
Single ended/pseudo differential mode,
LSB = FSR/8192
Differential mode LSB = FSR/8192
Equates to −7/+10 LSBs
Equates to ±0.5 LSBs
Equates to ±14 LSBs
Equates to ±0.5 LSBs
Equates to ±7 LSBs
Equates to ±0.5 LSBs
Equates to ±7.5 LSBs
Equates to ±0.5 LSBs
Equates to ±6 LSBs
Equates to ±0.5 LSBs
Single-ended/pseudo differential mode
LSB = FSR/4096
Equates to −4/+9 LSBs
Equates to ±0.6 LSBs
Equates to ±8 LSBs
Equates to ±0.5 LSBs
Equates to ±4 LSBs
Equates to ±0.5 LSBs
Equates to ±8.5LSBs
Equates to ±0.5 LSBs
Equates to ±4 LSBs
Equates to ±0.5 LSBs
CC
= 2.7 V
CC
= 3 V to 5.25 V, typ for
CC
= 2.7 V
CC
=