Datasheet AD7625 (Analog Devices) - 5

AD7625 Data Sheet Parameter Test Conditions/Comments Min Typ Max Unit
VCM PIN @ 25°C Output Voltage REF/2 V Output Impedance 4 5 6 kΩ LVDS I/O (ANSI-644) Data Format Serial LVDS twos complement Differential Output Voltage, VOD RL = 100 Ω 200 350 454 mV Common-Mode Output Voltage, V 2 OCM RL = 100 Ω 850 1250 1375 mV Differential Input Voltage, VID 100 650 mV Common-Mode Input Voltage, VICM 800 1575 mV POWER SUPPLIES Specified Performance VDD1 4.75 5 5.25 V VDD2 2.37 2.5 2.63 V VIO 2.37 2.5 2.63 V Operating Currents Static—Not Converting VDD1 4.5 7.8 mA VDD2 17 22.7 mA VIO Self-clocked mode and echoed- 11 13 mA clock mode With Internal Reference 6 MSPS throughput VDD1 11 15.4 mA VDD2 21.5 28.3 mA VIO Self-clocked mode and echoed- 13.5 16 mA clock mode Without Internal Reference 6 MSPS throughput VDD1 9 12.1 mA VDD2 21 26 mA VIO Self-clocked mode and echoed- 13.5 16 mA clock mode Power Dissipation3 Static—Not Converting 95 130 mW With Internal Reference 6 MSPS throughput 145 190 mW Without Internal Reference 6 MSPS throughput 135 165 mW Energy per Conversion 6 MSPS throughput 22 nJ/sample TEMPERATURE RANGE Specified Performance TMIN to TMAX −40 +85 °C 1 Using an external reference. 2 The ANSI-644 LVDS specification has a minimum output common mode (VOCM) of 1125 mV. 3 Power dissipation is for the AD7625 device only. In self-clocked interface mode, 9 mW is dissipated in the 100 Ω terminator. In echoed-clock interface mode, 18 mW is dissipated in two 100 Ω terminators. Rev. B | Page 4 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER INFORMATION TRANSFER FUNCTIONS ANALOG INPUTS TYPICAL CONNECTION DIAGRAM DRIVING THE AD7625 Differential Analog Input Source Single-Ended-to-Differential Driver VOLTAGE REFERENCE OPTIONS POWER SUPPLY Power-Up DIGITAL INTERFACE Conversion Control Echoed-Clock Interface Mode Self-Clocked Interface Mode APPLICATIONS INFORMATION LAYOUT, DECOUPLING, AND GROUNDING Exposed Pad VDD1 Supply Routing and Decoupling VIO Supply Decoupling Layout and Decoupling of Pin 25 to Pin 32 OUTLINE DIMENSIONS ORDERING GUIDE NOTES NOTES