Datasheet AD7321 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC |
| Pages / Page | 37 / 5 — AD7321. Data Sheet. B Version. Parameter. Min. Typ. Max. Unit. Test … |
| Revision | B |
| File Format / Size | PDF / 708 Kb |
| Document Language | English |
AD7321. Data Sheet. B Version. Parameter. Min. Typ. Max. Unit. Test Conditions/Comments
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AD7321 Data Sheet B Version Parameter
1
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 Bits Differential mode sign (13 bits) 11-bit plus Bits Single-ended/pseudo differential mode sign (12 bits) 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 ±0.006 %FSR Equates to ±0.5 LSBs Match2, 6 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 Ful -Scale Error ±0.006 %FSR Equates to ±0.5 LSBs Match2, 6 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 ±0.012 %FSR Equates to ±0.5 LSBs Match2, 6 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 ±0.012 %FSR Equates to ±0.5 LSBs Match2, 6 Rev. B | Page 4 of 36 Document Outline Features Functional Block Diagram General Description Product Highlights Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Output Coding Transfer Functions Analog Input Structure Track-and-Hold Section Typical Connection Diagram Analog Input Single-Ended Inputs True Differential Mode Pseudo Differential Inputs Driver Amplifier Choice Registers Addressing Registers Control Register Range Register Sequencer Operation Reference VDRIVE Modes of Operation Normal Mode Full Shutdown Mode Autoshutdown Mode Autostandby Mode Power vs. Throughput Rate Serial Interface Microprocessor Interfacing AD7321 to ADSP-21xx AD7321 to ADSP-BF53x Application Hints Layout and Grounding Power Supply Configuration Outline Dimensions Ordering Guide
AD7321 Data Sheet B Version Parameter
1
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 Bits Differential mode sign (13 bits) 11-bit plus Bits Single-ended/pseudo differential mode sign (12 bits) 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 ±0.006 %FSR Equates to ±0.5 LSBs Match2, 6 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 Ful -Scale Error ±0.006 %FSR Equates to ±0.5 LSBs Match2, 6 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 ±0.012 %FSR Equates to ±0.5 LSBs Match2, 6 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 ±0.012 %FSR Equates to ±0.5 LSBs Match2, 6 Rev. B | Page 4 of 36 Document Outline Features Functional Block Diagram General Description Product Highlights Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Output Coding Transfer Functions Analog Input Structure Track-and-Hold Section Typical Connection Diagram Analog Input Single-Ended Inputs True Differential Mode Pseudo Differential Inputs Driver Amplifier Choice Registers Addressing Registers Control Register Range Register Sequencer Operation Reference VDRIVE Modes of Operation Normal Mode Full Shutdown Mode Autoshutdown Mode Autostandby Mode Power vs. Throughput Rate Serial Interface Microprocessor Interfacing AD7321 to ADSP-21xx AD7321 to ADSP-BF53x Application Hints Layout and Grounding Power Supply Configuration Outline Dimensions Ordering Guide
