Datasheet AD7694 (Analog Devices) - 4

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Data Sheet AD7694 SPECIFICATIONS
VDD = 2.7 V to 5.25 V; VREF = VDD; TA = –40°C to +85°C, unless otherwise noted.
Table 2. A Grade B Grade Parameter Conditions Min Typ Max Min Typ Max Unit
RESOLUTION 16 16 Bits ANALOG INPUT Voltage Range IN+ − IN− 0 VREF 0 VREF V Absolute Input Voltage IN+ −0.1 VDD + 0.1 −0.1 VDD + 0.1 V IN− −0.1 +0.1 −0.1 +0.1 V Leakage Current at 25°C Acquisition phase 1 1 nA Input Impedance See the Analog Input section ACCURACY No Missing Codes 15 16 Bits Integral Linearity Error −6 +6 −4 +4 LSB Transition Noise REF = VDD = 5 V 0.5 0.5 LSB Gain Error1, TMIN to TMAX ±2 ±30 ±2 ±15 LSB Gain Error Temperature Drift ±0.3 ±0.3 ppm/°C Offset Error1, TMIN to TMAX ±0.7 ±3.5 ±0.7 ±3.5 mV Offset Temperature Drift ±0.3 ±0.3 ppm/°C Power Supply Sensitivity VDD = 5 V ± 5% ±0.05 ±0.05 LSB THROUGHPUT Conversion Rate VDD = 4.75 V to 5.25 V 0 250 0 250 kSPS VDD = 2.7 V to 4.75 V 0 150 0 150 kSPS AC ACCURACY Signal-to-Noise fIN = 20 kHz, VREF = 5 V 90 88 92 dB2 fIN = 20 kHz, VREF = 2.5 V 86 87 dB Spurious-Free Dynamic Range fIN = 20 kHz −100 −106 dB Total Harmonic Distortion fIN = 20 kHz −100 −106 dB Signal-to-(Noise + Distortion) fIN = 20 kHz, VREF = 5 V 89 88 92 dB fIN = 20 kHz, VREF = 2.5 V 86 87 dB 1 See the Terminology section. These specifications include full temperature range variation, but do not include the error contribution from the external reference. 2 All specifications in dB refer to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. Rev. B | Page 3 of 16 Document Outline Features Applications General Description Application Diagram Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Application Information Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface Layout Evaluating the AD7694 Performance Outline Dimensions Ordering Guide