Datasheet AD7984 (Analog Devices) - 4

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Data Sheet AD7984 SPECIFICATIONS
VDD = 2.5 V, VIO = 2.3 V to 5.5 V, REF = 5 V, TA = −40°C to +85°C, unless otherwise noted.
Table 2. Parameter Conditions Min Typ Max Unit
RESOLUTION 18 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 × 0.475 VREF × 0.5 VREF × 0.525 V Analog Input CMRR fIN = 450 kHz 67 dB1 Leakage Current at 25°C Acquisition phase 200 nA Input Impedance See the Analog Inputs section ACCURACY No Missing Codes 18 Bits Differential Linearity Error −1 +1.5 LSB2 Integral Linearity Error −2.25 +2.25 LSB2 Transition Noise 0.95 LSB2 Gain Error, T 3 MIN to TMAX −0.075 ±0.022 +0.075 % of FS Gain Error Temperature Drift −0.6 ppm/°C Zero Error, T 3 MIN to TMAX −700 ±100 +700 µV Zero Temperature Drift 0.3 ppm/°C Power Supply Sensitivity VDD = 2.5 V ± 5% 90 dB1 THROUGHPUT Conversion Rate 0 1.33 MSPS Transient Response Full-scale step 290 ns AC ACCURACY Dynamic Range VREF = 5 V 99.7 dB1 Signal-to-Noise, SNR fIN = 1 kHz, VREF = 5 V, TA = 25°C 96.5 98.5 dB1 Spurious-Free Dynamic Range, SFDR fIN = 10 kHz 112.5 dB1 Total Harmonic Distortion4, THD fIN = 10 kHz −110.5 dB1 Signal-to-(Noise + Distortion), SINAD fIN = 10 kHz, VREF = 5 V, TA = 25°C 98 dB1 1 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. 2 LSB means least significant bit. With the ±5 V input range, one LSB is 38.15 µV. 3 See Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference. 4 Tested fully in production at fIN = 1 kHz. Rev. B | Page 3 of 24 Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE MODE, 3-CS 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 AD7984 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE