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AD7643 Datasheet(PDF) 3 Page - Analog Devices |
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AD7643 Datasheet(HTML) 3 Page - Analog Devices |
3 / 24 page Data Sheet AD7625 Rev. A | Page 3 of 24 SPECIFICATIONS VDD1 = 5 V; VDD2 = 2.5 V; VIO = 2.5 V; REF = 4.096 V; all specifications TMIN to TMAX, unless otherwise noted. Table 2. Parameter Test Conditions/Comments Min Typ Max Unit RESOLUTION 16 Bits ANALOG INPUT Voltage Range V IN+ − VIN− −V REF +V REF V Operating Input Voltage V IN+, VIN− to GND −0.1 V REF + 0.1 V Common-Mode Input Range V REF/2 − 0.05 V REF/2 V REF/2 + 0.05 V Common-Mode Rejection Ratio f IN = 1 MHz 60 dB Input Current Midscale input 77 µA THROUGHPUT Complete Cycle 166 ns Throughput Rate 0.1 6 MSPS DC ACCURACY Integral Linearity Error −1 ±0.45 +1 LSB No Missing Codes 16 Bits Differential Linearity Error −0.5 ±0.3 +0.5 LSB Transition Noise 0.6 LSB Zero Error T MIN to TMAX −4 ±1.5 +4 LSB Zero Error Drift 0.5 ppm/°C Gain Error T MIN to TMAX 8 20 LSB Gain Error Drift 0.4 ppm/°C Power Supply Sensitivity1 VDD1 = 5 V ± 5% 0.4 LSB VDD2 = 2.5 V ± 5% 0.2 LSB AC ACCURACY External Reference f IN = 20 kHz Dynamic Range 92.5 93.2 dB Signal-to-Noise Ratio 92 93 dB Spurious-Free Dynamic Range 106 dB Total Harmonic Distortion −105.5 dB Signal-to-(Noise + Distortion) 91.5 92 dB Internal Reference f IN = 20 kHz Dynamic Range 92.5 93.2 dB Signal-to-Noise Ratio 91.5 92.9 dB Spurious-Free Dynamic Range 106 dB Total Harmonic Distortion −105.5 dB Signal-to-(Noise + Distortion) 91 92.5 dB −3 dB Input Bandwidth 100 MHz Aperture Jitter 0.25 ps rms INTERNAL REFERENCE Output Voltage REFIN @ 25°C 1.2 V Temperature Drift −40°C to +85°C ±15 ppm/°C REFERENCE BUFFER REFIN Input Voltage Range 1.2 V REF Output Voltage Range 4.076 4.096 4.116 V Line Regulation VDD1 ± 5%, VDD2 ± 5% 5 mV EXTERNAL REFERENCE Voltage Range REF 4.096 V VCM PIN @ 25°C Output Voltage REF/2 V Output Impedance 4 5 6 kΩ |
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