Datasheet AD7699 (Analog Devices) - 5

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Data Sheet AD7699 Parameter Test Conditions/Comments Min Typ Max Unit
Total Harmonic Distortion fIN = 20 kHz −97 dB Spurious-Free Dynamic Range fIN = 20 kHz 112 dB Channel-to-Channel Crosstalk fIN = 100 kHz on adjacent channel(s) −125 dB SAMPLING DYNAMICS −3 dB Input Bandwidth Full bandwidth 14 MHz ¼ bandwidth 3.6 MHz Aperture Delay VDD = 5 V 2.5 ns INTERNAL REFERENCE REF Output Voltage At 25°C 4.086 4.096 4.106 V REFIN Output Voltage6 At 25°C 2.3 V REF Output Current ±300 µA Temperature Drift ±10 ppm/°C Line Regulation VDD = 5 V ± 5% ±15 ppm/V Long-Term Drift 1000 hours 50 ppm Turn-On Settling Time CREF = 10 µF 5 ms EXTERNAL REFERENCE Voltage Range REF input 0.5 VDD + 0.3 V REFIN input (buffered) 0.5 VDD − 0.2 V Current Drain 500 kSPS, REF = 5 V 100 µA TEMPERATURE SENSOR Output Voltage7 At 25°C 283 mV Temperature Sensitivity 1 mV/°C DIGITAL INPUTS Logic Levels VIL −0.3 +0.3 × VIO V VIH 0.7 × VIO VIO + 0.3 V IIL −1 +1 µA IIH −1 +1 µA DIGITAL OUTPUTS Data Format8 Pipeline Delay9 VOL ISINK = +500 µA 0.4 V VOH ISOURCE = −500 µA VIO − 0.3 V POWER SUPPLIES VDD Specified performance 4.5 5.5 V VIO Specified performance 1.8 VDD + 0.3 V Standby Current10, 11 VDD and VIO = 5 V, at 25°C 50 nA Power Dissipation VDD = 5 V, 100 kSPS throughput 5.2 µW VDD = 5 V, 500 kSPS throughput 26 29 mW VDD = 5 V, 500 kSPS throughput with internal reference 28 32 mW Energy per Conversion 52 nJ TEMPERATURE RANGE12 Specified Performance TMIN to TMAX −40 +85 °C 1 See the Analog Inputs section. 2 The bandwidth is set with the configuration register. 3 LSB means least significant bit. With the 5 V input range, one LSB = 76.3 µV. 4 See the Terminology section. These specifications include full temperature range variation but not the error contribution from the reference. 5 All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below ful scale, unless otherwise specified. 6 This is the output from the internal band gap. 7 The output voltage is internal and present on a dedicated multiplexer input. 8 Unipolar mode: serial 16-bit straight binary. Bipolar mode: serial 16-bit twos complement. 9 Conversion results available immediately after completed conversion. 10 With all digital inputs forced to VIO or GND as required. 11 During acquisition phase. 12 Contact an Analog Devices, Inc., sales representative for the extended temperature range. Rev. F | Page 5 of 32 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION 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 OVERVIEW CONVERTER OPERATION TRANSFER FUNCTIONS TYPICAL CONNECTION DIAGRAMS Unipolar or Bipolar Bipolar Single Supply ANALOG INPUTS Input Structure Selectable Low-Pass Filter Input Configurations Sequencer Examples Source Resistance DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE OUTPUT/INPUT Internal Reference/Temperature Sensor External Reference and Internal Buffer External Reference Reference Decoupling POWER SUPPLY SUPPLYING THE ADC FROM THE REFERENCE DIGITAL INTERFACE READING/WRITING DURING CONVERSION, FAST HOSTS READING/WRITING DURING ACQUISITION, ANY SPEED HOSTS READING/WRITING SPANNING CONVERSION, ANY SPEED HOST CONFIGURATION REGISTER, CFG GENERAL TIMING WITHOUT A BUSY INDICATOR GENERAL TIMING WITH A BUSY INDICATOR READ/WRITE SPANNING CONVERSION WITHOUT A BUSY INDICATOR READ/WRITE SPANNING CONVERSION WITH A BUSY INDICATOR CHANNEL SEQUENCER Examples APPLICATION HINTS LAYOUT EVALUATING AD7699 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE