Datasheet AD7693 (Analog Devices) - 4

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Data Sheet AD7693 SPECIFICATIONS
VDD = 4.5 V to 5.5 V, VIO = 2.3 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 2. Parameter Conditions/Comments Min Typ Max Unit
RESOLUTION 16 Bits ANALOG INPUT Voltage Range IN+ − (IN−) −VREF +VREF V Absolute Input Voltage IN+, IN− −0.1 VREF + 0.1 V Common-Mode Input Range IN+, IN− VREF/2 – 0.1 VREF/2 VREF/2 + 0.1 V Analog Input CMRR fIN = 250 kHz 65 dB Leakage Current at 25°C Acquisition phase 1 nA Input Impedance1 THROUGHPUT Conversion Rate 0 500 kSPS Transient Response Full-scale step 400 ns ACCURACY No Missing Codes 16 Bits Integral Linearity Error −0.5 ±0.25 +0.5 LSB2 Differential Linearity Error −0.5 ±0.25 +0.5 LSB Transition Noise REF = VDD = 5 V 0.35 LSB Gain Error3 −20 ±0.5 +20 LSB Gain Error Temperature Drift ±0.3 ppm/°C Zero Error3 −5 ±0.5 +5 LSB Zero Temperature Drift ±0.3 ppm/°C Power Supply Sensitivity VDD = 5 V ± 5% ±1 ppm AC ACCURACY4 Dynamic Range 96 96.5 dB5 Signal-to-Noise fIN = 1 kHz 95.5 96 dB fIN = 10 kHz 95.5 dB fIN = 100 kHz 93 dB fIN = 1 kHz, VREF = 2.5 V 93 dB Signal-to-(Noise + Distortion) fIN = 1 kHz 95.5 96 dB fIN = 10 kHz 95.5 dB fIN = 100 kHz 90 dB Total Harmonic Distortion fIN = 1 kHz −120 −108 dB fIN = 10 kHz −113 dB fIN = 100 kHz −92 dB Spurious-Free Dynamic Range fIN = 1 kHz 120 dB fIN = 10 kHz 114 dB fIN = 100 kHz 93.5 dB Intermodulation Distortion6 115 dB 1 See the Analog Inputs section. 2 LSB means least significant bit. With the ±5 V input range, one LSB is 152.6 µV. 3 See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference. 4 With VREF = 5 V, unless otherwise noted. 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 full scale, unless otherwise specified. 6 fIN1 = 21.4 kHz and fIN2 = 18.9 kHz, with each tone at −7 dB below full scale. Rev. B | Page 3 of 24 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specification Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Single-Ended-to-Differential Driver Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface /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 AD7693 Performance Outline Dimensions Ordering Guide