Datasheet AD7321 (Analog Devices) - 7

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AD7321 Data Sheet B Version Parameter
1
Min Typ Max Unit Test Conditions/Comments
CONVERSION RATE Conversion Time 1.6 µs 16 SCLK cycles with SCLK = 10 MHz Track-and-Hold Acquisition 305 ns Ful -scale step input; see the Terminology section Time2, 3 Throughput Rate 500 kSPS See the Serial Interface section POWER REQUIREMENTS Digital inputs = 0 V or VDRIVE VDD 12 16.5 V See Table 6 VSS −12 −16.5 V See Table 6 VCC 2.7 5.25 V See Table 6 VDRIVE 2.7 5.25 V Normal Mode (Static) 0.9 mA VDD/VSS = ±16.5 V, VCC/VDRIVE = 5.25 V Normal Mode (Operational) fSAMPLE = 500 kSPS IDD 180 µA VDD = 16.5 V ISS 205 µA VSS = −16.5 V ICC and IDRIVE 2.2 mA VCC/VDRIVE = 5.25 V Autostandby Mode fSAMPLE = 250 kSPS (Dynamic) IDD 100 µA VDD = 16.5 V ISS 110 µA VSS = −16.5 V ICC and IDRIVE 0.75 mA VCC/VDRIVE = 5.25 V Autoshutdown Mode (Static) SCLK on or off IDD 1 µA VDD = 16.5 V ISS 1 µA VSS = −16.5 V ICC and IDRIVE 1 µA VCC/VDRIVE = 5.25 V Full Shutdown Mode SCLK on or off IDD 1 µA VDD = 16.5 V ISS 1 µA VSS = −16.5 V ICC and IDRIVE 1 µA VCC/VDRIVE = 5.25 V POWER DISSIPATION Normal Mode (Operational) 18 mW VDD = 16.5 V, VSS = −16.5 V, VCC = 5.25 V Full Shutdown Mode 38.25 µW VDD = 16.5 V, VSS = −16.5 V, VCC = 5.25 V 1 Temperature range is −40°C to +85°C. 2 See the Terminology section. 3 Sample tested during initial release to ensure compliance. 4 For dc accuracy specifications, the LSB size for differential mode is FSR/8192. For single-ended mode/pseudo differential mode, the LSB size is FSR/4096, unless otherwise noted. FSR is the theoretical difference between the max and min input values. 5 Unipolar 0 V to 10 V range with straight binary output coding. 6 Bipolar range with twos complement output coding. Rev. B | Page 6 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