Datasheet AD7656A (Analog Devices) - 5

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AD7656A Data Sheet Parameter Min Typ Max Unit Test Conditions/Comments
LOGIC INPUTS Input High Voltage (VINH) 0.7 × VDRIVE V Input Low Voltage (VINL) 0.3 × VDRIVE V Input Current (IIN) ±1 µA Typically 10 nA, VIN = 0 V or VDRIVE Input Capacitance (CIN)2 10 pF LOGIC OUTPUTS Output High Voltage (VOH) VDRIVE − 0.2 V ISOURCE = 200 µA Output Low Voltage (VOL) 0.2 V ISINK = 200 µA Floating State Leakage Current ±1 µA Floating State Output Capacitance2 10 pF Output Coding CONVERSION RATE Conversion Time 3.1 µs Track-and-Hold Acquisition Time1, 2 550 ns Throughput Rate 250 kSPS Parallel interface mode only POWER REQUIREMENTS VDD Range 6 16.5 V For the 4 × VREF range, VDD = 11 V to 16.5 V VSS Range −6 −16.5 V For the 4 × VREF range, VSS = −11 V to −16.5 V AVCC 4.75 5.25 V DVCC 4.75 5.25 V VDRIVE 2.7 5.25 V I 4 TOTAL Digital inputs = 0 V or VDRIVE Normal Mode (Static) 28 mA AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Normal Mode (Operational) 26 mA fSAMPLE = 250 kSPS, AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V ISS (Operational) 0.25 mA VSS = −16.5 V, fSAMPLE = 250 kSPS IDD (Operational) 0.25 mA VDD = 16.5 V, fSAMPLE = 250 kSPS Partial Power-Down Mode 7 mA AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Full Power-Down Mode (STBY Pin) 80 mA SCLK on or off, AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Power Dissipation AVCC = DVCC = VDRIVE = 5.25 V, VDD = 16.5 V, VSS = −16.5 V Normal Mode (Static) 143 mW Normal Mode (Operational) 140 mW fSAMPLE = 250 kSPS Partial Power-Down Mode 35 mW Full Power-Down Mode (STBY Pin) 100 mW 1 See the Terminology section. 2 Sample tested during initial release to ensure compliance. 3 Multifunction pin names may be referenced by their relevant function only. 4 Includes IAVCC, IVDD, IVSS, IVDRIVE, and IDVCC. Rev. 0 | Page 4 of 28 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS POWER SUPPLY SEQUENCING THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CONVERTER DETAILS Track-and-Hold Amplifiers Analog Input ADC TRANSFER FUNCTION REFERENCE SECTION TYPICAL CONNECTION DIAGRAM DRIVING THE ANALOG INPUTS INTERFACE SECTION Parallel Interface (SER/PAR/SEL = 0) SOFTWARE SELECTION OF ADCS Changing the Analog Input Range (H/S SEL = 0) Changing the Analog Input Range (H/S SEL = 1) Serial Interface (SER/PAR/SEL = 1) SERIAL READ OPERATION DAISY-CHAIN MODE (DCEN = 1, SER//SEL = 1) Standby/Partial Power-Down Modes of Operation (SER/PAR/SEL = 0 or SER/PAR/SEL = 1) APPLICATION HINTS LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE