Datasheet AD7322 (Analog Devices) - 5

FabricanteAnalog Devices
DescripciónSoftware Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
Páginas / Página37 / 5 — AD7322. Data Sheet. B Version. Parameter1. Min. Typ. Max. Unit. Test …
RevisiónB
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AD7322. Data Sheet. B Version. Parameter1. Min. Typ. Max. Unit. Test Conditions/Comments

AD7322 Data Sheet B Version Parameter1 Min Typ Max Unit Test Conditions/Comments

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AD7322 Data Sheet B Version Parameter1 Min Typ Max Unit Test Conditions/Comments
Differential Nonlinearity2 −0.9/+1.5 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) Offset Error2, 4 −4/+9 LSB Single-ended/pseudo differential mode −7/+10 LSB Differential mode Offset Error Match2, 4 ±0.6 LSB Single-ended/pseudo differential mode ±0.5 LSB Differential mode Gain Error2, 4 ±8 LSB Single-ended/pseudo differential mode ±14 LSB Differential mode Gain Error Match2, 4 ±0.5 LSB Single-ended/pseudo differential mode ±0.5 LSB Differential mode Positive Full-Scale Error2, 5 ±4 LSB Single-ended/pseudo differential mode ±7 LSB Differential mode Positive Full-Scale Error Match2, 5 ±0.5 LSB Single-ended/pseudo differential mode ±0.5 LSB Differential mode Bipolar Zero Error2, 5 ±8.5 LSB Single-ended/pseudo differential mode ±7.5 LSB Differential mode Bipolar Zero Error Match2, 5 ±0.5 LSB Single-ended/pseudo differential mode ±0.5 LSB Differential mode Negative Full-Scale Error2, 5 ±4 LSB Single-ended/pseudo differential mode ±6 LSB Differential mode Negative Ful -Scale Error Match2, 5 ±0.5 LSB Single-ended/pseudo differential mode ±0.5 LSB Differential mode ANALOG INPUT Input Voltage Ranges Reference = 2.5 V; see Table 6 (Programmed via Range Register) ±10 V VDD = 10 V min, VSS = −10 V min, VCC = 2.7 V to 5.25 V ±5 V VDD = 5 V min, VSS = −5 V min, VCC = 2.7 V to 5.25 V ±2.5 V VDD = 5 V min, VSS = − 5 V min, VCC = 2.7 V to 5.25 V 0 to 10 V VDD = 10 V min, VSS = AGND min, VCC = 2.7 V to 5.25 V Pseudo Differential VIN(−) Input VDD = 16.5 V, VSS = −16.5 V, VCC = 5 V; see Figure 40 Range and Figure 41 ±3.5 V Reference = 2.5 V; range = ±10 V ±6 V Reference = 2.5 V; range = ±5 V ±5 V Reference = 2.5 V; range = ±2.5 V +3/−5 V Reference = 2.5 V; range = 0 V to +10 V DC Leakage Current ±80 nA VIN = VDD or VSS 3 nA Per channel, VIN = VDD or VSS Input Capacitance3 13.5 pF When in track, ±10 V range 16.5 pF When in track, ±5 V and 0 V to +10 V range 21.5 pF When in track, ±2.5 V range 3 pF When in hold, all ranges REFERENCE INPUT/OUTPUT Input Voltage Range 2.5 3 V Input DC Leakage Current ±1 µA Input Capacitance 10 pF Reference Output Voltage 2.5 V Reference Output Voltage Error at ±5 mV 25°C Reference Output Voltage ±10 mV TMIN to TMAX Reference Temperature Coefficient 3 25 ppm/°C Reference Output Impedance 7 Ω Rev. B | Page 4 of 36 Document Outline Features Functional Block Diagram General Description 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 (PM1 = PM0 = 0) Full Shutdown Mode (PM1 = PM0 = 1) Autoshutdown Mode (PM1 = 1, PM0 = 0) Autostandby Mode (PM1 = 0, PM0 = 1) Power vs. Throughput Rate Serial Interface Microprocessor Interfacing AD7322 to ADSP-21xx AD7322 to ADSP-BF53x Application Hints Layout and Grounding Power Supply Configuration Outline Dimensions Ordering Guide