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AD7949BCPZ Datasheet(PDF) 3 Page - Analog Devices |
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AD7949BCPZ Datasheet(HTML) 3 Page - Analog Devices |
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3 / 32 page  AD7949 Rev. B | Page 3 of 32 SPECIFICATIONS VDD = 2.3 V to 5.5 V, VIO = 1.8 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted. Table 2. Parameter Conditions/Comments Min Typ Max Unit RESOLUTION 14 Bits ANALOG INPUT Voltage Range Unipolar mode 0 +VREF V Bipolar mode −VREF/2 +VREF/2 Absolute Input Voltage Positive input, unipolar and bipolar modes −0.1 VREF + 0.1 V Negative or COM input, unipolar mode −0.1 +0.1 Negative or COM input, bipolar mode VREF/2 − 0.1 VREF/2 VREF/2 + 0.1 Analog Input CMRR fIN = 250 kHz 68 dB Leakage Current at 25°C Acquisition phase 1 nA Input Impedance1 THROUGHPUT Conversion Rate Full Bandwidth2 VDD = 4.5 V to 5.5 V 0 250 kSPS VDD = 2.3 V to 4.5 V 0 200 kSPS ¼ Bandwidth2 VDD = 4.5 V to 5.5 V 0 62.5 kSPS VDD = 2.3 V to 4.5 V 0 50 kSPS Transient Response Full-scale step, full bandwidth 1.8 μs Full-scale step, ¼ bandwidth 14.5 μs ACCURACY No Missing Codes 14 Bits Integral Linearity Error −1 ±0.5 +1 LSB3 Differential Linearity Error −1 ±0.25 +1 LSB Transition Noise REF = VDD = 5 V 0.1 LSB Gain Error4 −5 ±0.5 +5 LSB Gain Error Match −1 ±0.2 +1 LSB Gain Error Temperature Drift ±1 ppm/°C Offset Error4 ±0.5 LSB Offset Error Match −1 ±0.2 +1 LSB Offset Error Temperature Drift ±1 ppm/°C Power Supply Sensitivity VDD = 5 V 5% ±0.2 LSB AC ACCURACY5 Dynamic Range 85.6 dB6 Signal-to-Noise fIN = 20 kHz, VREF = 5 V 84.5 85.5 dB fIN = 20 kHz, VREF = 4.096 V internal REF 85 dB fIN = 20 kHz, VREF = 2.5 V internal REF 84 dB SINAD fIN = 20 kHz, VREF = 5 V 84 85 dB fIN = 20 kHz, VREF = 5 V, −60 dB input 33.5 dB fIN = 20 kHz, VREF = 4.096 V internal REF 85 dB fIN = 20 kHz, VREF = 2.5 V internal REF 84 dB Total Harmonic Distortion fIN = 20 kHz −100 dB Spurious-Free Dynamic Range fIN = 20 kHz 108 dB Channel-to-Channel Crosstalk fIN = 100 kHz on adjacent channel(s) −125 dB SAMPLING DYNAMICS −3 dB Input Bandwidth Full bandwidth 1.7 MHz ¼ bandwidth 0.425 MHz Aperture Delay VDD = 5 V 2.5 ns |
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