Datasheet AD7327 (Analog Devices) - 6

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Data Sheet AD7327 B Version Parameter1 Min Typ Max Unit Test Conditions/Comments
DC Leakage Current ±80 nA VIN = VDD or VSS 3 nA Per input 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 ranges 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 ±5 mV at 25°C Reference Output Voltage ±10 mV TMIN to TMAX Reference Temperature 25 ppm/°C Coefficient 3 ppm/°C Reference Output Impedance 7 Ω LOGIC INPUTS Input High Voltage, VINH 2.4 V Input Low Voltage, VINL 0.8 V VCC = 4.75 V to 5.25 V 0.4 V VCC = 2.7 to 3.6 V Input Current, IIN ±1 µA VIN = 0 V or VDRIVE Input Capacitance, C 3 IN 10 pF LOGIC OUTPUTS Output High Voltage, VOH VDRIVE − V ISOURCE = 200 µA 0.2 V Output Low Voltage, VOL 0.4 V ISINK = 200 µA Floating-State Leakage Current ±1 µA Floating-State Output 5 pF Capacitance3 Output Coding Straight natural binary Coding bit set to 1 in control register Twos complement Coding bit set to 0 in control register CONVERSION RATE Conversion Time 1.6 µs 16 SCLK cycles with SCLK = 10 MHz Track-and-Hold Acquisition 305 ns Full-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 (Dynamic) fSAMPLE = 250 kSPS 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 Rev. B | Page 5 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 Registers Sequencer Operation Reference VDRIVE Temperature Indicator Modes of Operation Normal Mode Full Shutdown Mode Autoshutdown Mode Autostandby Mode Power vs. Throughput Rate Serial Interface Microprocessor Interfacing AD7327 to ADSP-21xx AD7327 to ADSP-BF53x Application Hints Layout and Grounding Power Supply Configuration Outline Dimensions Ordering Guide