Datasheet AD7993, AD7994 (Analog Devices) - 6

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AD7993/AD7994 Parameter B Version Unit Test Conditions/Comments
LOGIC INPUTS (CONVST) Input High Voltage, VINH 2.4 V min VDD = 5 V 2.0 V min VDD = 3 V Input Low Voltage, VINL 0.8 V max VDD = 5 V 0.4 V max VDD = 3 V Input Leakage Current, IIN ±1 µA max VIN = 0 V or VDD Input Capacitance, C 3 IN 10 pF max LOGIC OUTPUTS (OPEN-DRAIN) Output Low Voltage, VOL 0.4 V max ISINK = 3 mA 0.6 V max ISINK = 6 mA Floating-State Leakage Current ±1 µA max Floating-State Output Capacitance3 10 pF max Output Coding Straight (Natural) Binary CONVERSION RATE See the Serial Interface section Conversion Time 2 µs typ Throughput Rate Mode 1 (Reading after the Conversion) 5 kSPS typ fSCL = 100 kHz 21 kSPS typ fSCL = 400 kHz 121 kSPS typ fSCL = 3.4 MHz Mode 2 5.5 kSPS typ fSCL = 100 kHz 22 kSPS typ fSCL = 400 kHz 147 kSPS typ fSCL = 3.4 MHz , 188 kSPS typ @ 5 V POWER REQUIREMENTS VDD 2.7/5.5 V min/max IDD Digital inputs = 0 V or VDD Power-Down Mode, Interface Inactive 1/2 µA max VDD = 3.3 V/5.5 V Power-Down Mode, Interface Active 0.07/0.3 mA max VDD = 3.3 V/5.5 V, 400 kHz fSCL 0.3/0.6 mA max VDD = 3.3 V/5.5 V, 3.4 MHz fSCL Operating, Interface Inactive 0.06/0.1 mA max VDD = 3.3 V/5.5 V, 400 kHz fSCL 0.3/0.6 mA max VDD = 3.3 V/5.5 V, 3.4 MHz fSCL Operating, Interface Active 0.15/0.4 mA max VDD = 3.3 V/5.5 V, 400 kHz fSCL 0.6/1.1 mA max VDD = 3.3 V/5.5 V, 3.4 MHz fSCL Mode 1 0.7/1.4 mA typ VDD = 3.3 V/5.5 V, 3.4 MHz fSCL Mode 2 Mode 3 (I2C Inactive, TCONVERT x 32) 0.7/1.5 mA max VDD = 3.3 V/5.5 V POWER DISSIPATION Fully Operational Operating, Interface Active 0.495/2.2 mW max VDD = 3.3 V/5.5 V, 400 kHz fSCL 1.98/6.05 mW max VDD = 3.3 V/5.5 V, 3.4 MHz fSCL Mode 1 2.31/7.7 mW typ VDD = 3.3 V/5.5 V, 3.4 MHz fSCL Mode 2 Power-Down, Interface Inactive 3.3/11 µW max VDD = 3.3 V/5.5 V 1 Min/max AC dynamic performance, INL and DNL specifications are typical specifications when operating in Mode 2 with I2C high speed mode SCL frequencies. Specifications outlined for Mode 2 apply to Mode 3 also. Sample delay and bit trial delay enabled. 2 See the Terminolo s gy ection. 3 Guaranteed by initial characterization. Rev. 0 | Page 6 of 32 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS AD7993 SPECIFICATIONS AD7994 SPECIFICATIONS I2C TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION TYPICAL CONNECTION DIAGRAM ANALOG INPUT INTERNAL REGISTER STRUCTURE ADDRESS POINTER REGISTER CONFIGURATION REGISTER CONVERSION RESULT REGISTER LIMIT REGISTERS ALERT STATUS REGISTER CYCLE TIMER REGISTER SAMPLE DELAY AND BIT TRIAL DELAY SERIAL INTERFACE SERIAL BUS ADDRESS WRITING TO THE AD7993/AD7994 WRITING TO THE ADDRESS POINTER REGISTER FOR A SUBSEQUENT REA WRITING A SINGLE BYTE OF DATA TO THE ALERT STATUS REGISTER O WRITING TWO BYTES OF DATA TO A LIMIT OR HYSTERESIS REGISTER READING DATA FROM THE AD7993/AD7994 ALERT/BUSY PIN SMBus ALERT BUSY PLACING THE AD7993-1/AD7994-1 INTO HIGH SPEED MODE THE ADDRESS SELECT (AS) PIN MODES OF OPERATION MODE 1—USING THE CONVST PIN MODE 2—COMMAND MODE MODE 3—AUTOMATIC CYCLE INTERVAL MODE OUTLINE DIMENSIONS ORDERING GUIDE RELATED PARTS IN I2C-COMPATIBLE ADC PRODUCT FAMILY