Datasheet AD7902 (Analog Devices) - 5

AD7902 Data Sheet
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, TA = −40°C to +125°C, unless otherwise noted.1
Table 3. Parameter Test Conditions/Comments Min Typ Max Unit
REFERENCE Voltage Range 2.4 5.1 V Load Current 1 MSPS, V = 5 V, each ADC 330 µA REF SAMPLING DYNAMICS −3 dB Input Bandwidth 10 MHz Aperture Delay V = 2.5 V 2.0 ns DD Aperture Delay Match V = 2.5 V 2.0 ns DD DIGITAL INPUTS Logic Levels V V > 3 V −0.3 +0.3 × V V IL IO IO V ≤ 3 V −0.3 +0.1 × V V IO VIO V V > 3 V 0.7 × V V + 0.3 V IH IO IO IO V ≤ 3 V 0.9 × V V + 0.3 V IO IO IO I −1 +1 µA IL I −1 +1 µA IH DIGITAL OUTPUTS Data Format Straight binary Bits Pipeline Delay No delay, conversion results available 0 Samples immediately after conversion is complete V I = 500 µA 0.4 V OL SINK V I = −500 µA V − 0.3 V OH SOURCE IO POWER SUPPLIES VDDx 2.375 2.5 2.625 V VIOx Specified performance 2.3 5.5 V VIOx Range Full range 1.8 5.5 V I Each ADC 1.4 1.6 mA VDDx I Each ADC 0.2 0.45 mA VIOx Standby Current2, 3 V and V = 2.5 V, 25°C 0.35 µA DD IO Power Dissipation 10 kSPS throughput 140 µW 1 MSPS throughput 12.0 16 mW VDDx Only 1 MSPS throughput 7.0 mW REF Only 3.3 mW VIO Only 1.7 mW Energy per Conversion 7.0 nJ/sample TEMPERATURE RANGE4 Specified Performance T to T −40 +125 °C MIN MAX 1 In this data sheet, the voltages for the VDDx, VIOx, and REFx pins are indicated by VDD, VIO, and VREF, respectively. 2 With all digital inputs forced to VIOx or to ground, as required. 3 During the acquisition phase. 4 Contact Analog Devices, Inc., for the extended temperature range. Rev. B | Page 4 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM 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 Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE CS MODE /CS Mode, 3-Wire Interface Without Busy Indicator /CS Mode, 3-Wire Interface with Busy Indicator /CS Mode, 4-Wire Interface Without Busy Indicator /CS Mode, 4-Wire Interface with Busy Indicator CHAIN MODE Chain Mode Without Busy Indicator Chain Mode with Busy Indicator APPLICATIONS INFORMATION SIMULTANEOUS SAMPLING FUNCTIONAL SAFTEY CONSIDERATIONS LAYOUT EVALUATING PERFORMANCE OF THE AD7902 OUTLINE DIMENSIONS ORDERING GUIDE NOTES