link to page 35 link to page 9 link to page 9 AD7323Data SheetABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted Table 4. Stresses above those listed under Absolute Maximum Ratings ParameterRating may cause permanent damage to the device. This is a stress VDD to AGND, DGND −0.3 V to +16.5 V rating only; functional operation of the device at these or any VSS to AGND, DGND +0.3 V to −16.5 V other conditions above those indicated in the operational VDD to VCC VCC − 0.3 V to 16.5 V section of this specification is not implied. Exposure to absolute VCC to AGND, DGND −0.3 V to +7 V maximum rating conditions for extended periods may affect VDRIVE to AGND, DGND −0.3 V to +7 V device reliability. AGND to DGND −0.3 V to +0.3 V ESD CAUTION Analog Input Voltage to AGND1 VSS − 0.3 V to VDD + 0.3 V Digital Input Voltage to DGND −0.3 V to +7 V Digital Output Voltage to GND −0.3 V to VDRIVE + 0.3 V REFIN/OUT to AGND −0.3 V to VCC + 0.3 V Input Current to Any Pin ±10 mA Except Supplies2 Operating Temperature Range −40°C to +85°C Storage Temperature Range −65°C to +150°C Junction Temperature 150°C TSSOP Package θJA Thermal Impedance 150°C/W θJC Thermal Impedance 27.6°C/W Pb-Free Temperature, Soldering Reflow 260(0)°C ESD 2.5 kV 1 If the analog inputs are driven from alternative VDD and VSS supply circuitry, Schottky diodes should be placed in series with the AD7323’s VDD and VSS supplies. See the Power Supply Configuration section. 2 Transient currents of up to 100 mA do not cause SCR latch-up. Rev. B | Page 8 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 Sequence 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 AD7323 to ADSP-21xx AD7323 to ADSP-BF53x Application Hints Layout and Grounding Power Supply Configuration Outline Dimensions Ordering Guide
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