Datasheet AD7276, AD7277, AD7278 (Analog Devices) - 4

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AD7276/AD7277/AD7278 Data Sheet Parameter A Grade2, 3 B, Y Grade2, 3 Unit Test Conditions/Comments
CONVERSION RATE Conversion Time 291 291 ns max 14 SCLK cycles with SCLK at 48 MHz, B Grade 875 875 ns max 14 SCLK cycles with SCLK at 16 MHz, Y Grade Track-and-Hold Acquisition Time4 60 60 ns min Throughput Rate 3 3 MSPS max See the Serial Interface section POWER REQUIREMENTS V 2.35/3.6 2.35/3.6 V min/max DD I Digital I/Ps 0 V or V DD DD Normal Mode (Static) 1 1 mA typ V = 3.6 V, SCLK on or off DD Normal Mode (Operational) 5.5 5.5 mA max V = 2.35 V to 3.6 V, f = 3 MSPS, B Grade DD SAMPLE 2.5 2.5 mA max V = 2.35 V to 3.6 V, f = 1 MSPS, Y Grade DD SAMPLE 4.2 4.2 mA typ V = 3 V, f = 3 MSPS, B Grade DD SAMPLE 1.6 1.6 mA typ V = 3 V, f = 1 MSPS, Y Grade DD SAMPLE Partial Power-Down Mode (Static) 34 34 µA typ Full Power-Down Mode (Static) 2 2 µA max −40°C to +85°C, typically 0.1 µA 10 10 µA max 85°C to 125°C Power Dissipation6 Normal Mode (Operational) 19.8 19.8 mW max V = 3.6 V, f = 3 MSPS, B Grade DD SAMPLE 9 9 mW max V = 3.6 V, f = 1 MSPS, Y Grade DD SAMPLE 12.6 12.6 mW typ V = 3 V, f = 3 MSPS, B Grade DD SAMPLE 4.8 4.8 mW typ V = 3 V, f = 1 MSPS, Y Grade DD SAMPLE Partial Power-Down 102 102 µW typ V = 3 V DD Full Power-Down 7.2 7.2 µW max V = 3.6 V, −40°C to +85°C DD 1 Y grade specifications are guaranteed by characterization. 2 Temperature range from −40°C to +125°C. 3 Typical specifications are tested with VDD = 3 V and at 25°C. 4 See the Terminology section. 5 Guaranteed by characterization. 6 See the Power vs. Throughput Rate section. Rev. D | Page 4 of 28 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS AD7276 SPECIFICATIONS AD7277 SPECIFICATIONS AD7278 SPECIFICATIONS TIMING SPECIFICATIONS—AD7276/AD7277/AD7278 TIMING EXAMPLES Timing Example 1 Timing Example 2 ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM Analog Input Digital Inputs MODES OF OPERATION Normal Mode Partial Power-Down Mode Full Power-Down Mode Power-Up Times POWER VS. THROUGHPUT RATE SERIAL INTERFACE AD7278 IN A 10 SCLK CYCLE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7276/AD7277/AD7278 to Blackfin Processor APPLICATION HINTS GROUNDING AND LAYOUT EVALUATING PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE NOTES