Datasheet AD7986 (Analog Devices) - 5

AD7986 Data Sheet
AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF = 4.096 V, TA = −40°C to +85°C, unless otherwise noted.
Table 3. Parameter Test Conditions/Comments Min Typ Max Unit
INTERNAL REFERENCE PDREF = low Output Voltage TA = 25°C 4.081 4.096 4.111 V Temperature Drift −40°C to +85°C ±10 ppm/°C Line Regulation AVDD = 2.5 V ± 5% ±50 ppm/V Turn-On Settling Time CREF = 10 μF, CREFBUFIN = 0.1 μF 220 ms REFIN Output Voltage REFIN at 25°C 1.2 V REFIN Output Resistance 7.5 kΩ EXTERNAL REFERENCE PDREF = high, REFIN = low Voltage Range 2.4 5.1 V Current Drain 2 MSPS, VREF = 5.0 V 500 µA REFERENCE BUFFER REFIN Input Voltage Range 1.2 V REFIN Input Current 160 µA DIGITAL INPUTS Logic Levels VIL −0.3 +0.1 × VIO V VIH +0.9 × VIO VIO + 0.3 V IIL −1 +1 µA IIH −1 +1 µA DIGITAL OUTPUTS Data Format Serial, 18 bits, twos complement Pipeline Delay Conversion results available immediately after completed conversion VOL ISINK = +500 µA 0.4 V VOH ISOURCE = −500 µA VIO − 0.3 V POWER SUPPLIES AVDD, DVDD 2.375 2.5 2.625 V BVDD 4.75 5.0 5.25 VIO Specified performance 1.8 2.5 2.7 V VIO Range V Standby Current1, 2 AVDD = DVDD = VIO = 2.5 V, BVDD = 5.0 V 2.25 µA Power Dissipation With Internal Reference 2 MSPS throughput 29 34 mW Without Internal Reference 2 MSPS throughput 15 16.5 mW With Internal Reference 1.5 MSPS throughput 26 30 mW Without Internal Reference 1.5 MSPS throughput 11.5 13 mW TEMPERATURE RANGE3 Specified Performance TMIN to TMAX −40 +85 °C 1 With all digital inputs forced to VIO or GND as required. 2 During acquisition phase. 3 Contact an Analog Devices, Inc., sales representative for the extended temperature range. Rev. D | Page 4 of 28 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION 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 CONVERSION MODES OF OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT Internal Reference, REF = 4.096V (PDREF = Low) External 1.2 V Reference and Internal Buffer (PDREF = High) External Reference (PDREF = High, REFIN = Low) Reference Decoupling POWER SUPPLY DIGITAL INTERFACE DATA READING OPTIONS Reading During Conversion, Fast Hosts (Turbo or Normal Mode) Split-Reading, Any Speed Host (Turbo or Normal Mode) Reading During Acquisition, Any Speed Hosts (Turbo or Normal Mode) /CS MODE, 3-WIRE WITHOUT BUSY INDICATOR /CS MODE, 3-WIRE WITH BUSY INDICATOR /CS MODE, 4-WIRE WITHOUT BUSY INDICATOR /CS MODE, 4-WIRE WITH BUSY INDICATOR CHAIN MODE WITHOUT BUSY INDICATOR CHAIN MODE WITH BUSY INDICATOR APPLICATION HINTS LAYOUT EVALUATING THE PERFORMANCE OF THE AD7986 OUTLINE DIMENSIONS ORDERING GUIDE