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AD7981 датащи(PDF) 3 Page - Analog Devices |
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AD7981 датащи(HTML) 3 Page - Analog Devices |
3 / 25 page Data Sheet AD7981 SPECIFICATIONS VDD = 2.5 V, VIO = 2.3 V to 5.5 V, VREF = 5 V, TA = −55°C to +175°C, unless otherwise noted. Table 1. Parameter Test Conditions/Comments Min Typ Max Unit RESOLUTION 16 Bits ANALOG INPUT Voltage Range IN+ − IN− 0 VREF V Absolute Input Voltage IN+ −0.1 VREF + 0.1 V IN− −0.1 +0.1 V Analog Input Common-Mode Rejection Ratio (CMRR) fIN = 100 kHz 60 dB Leakage Current at 25°C Acquisition phase 1 nA Input Impedance See the Analog Input section ACCURACY No Missing Codes 16 Bits Differential Nonlinearity VREF = 5 V −0.9 ±0.4 +0.9 LSB1 VREF = 2.5 V ±0.5 LSB1 Integral Nonlinearity VREF = 5 V −2.0 ±0.7 +2.0 LSB1 VREF = 2.5 V ±0.6 LSB1 Transition Noise VREF = 5 V 0.75 LSB1 VREF = 2.5 V 1.2 LSB1 Gain Error2 TMIN to TMAX ±2 LSB1 Gain Error Temperature Drift ±0.35 ppm/°C Zero Error2 TMIN to TMAX −1 ±0.08 +1 mV Zero Temperature Drift 0.45 ppm/°C Power Supply Sensitivity VDD = 2.5 V ± 5% ±0.1 LSB1 THROUGHPUT Conversion Rate 0 600 kSPS Transient Response Full-scale step 290 ns AC ACCURACY3 Dynamic Range VREF = 5 V 92 dB VREF = 2.5 V 87 dB Oversampled Dynamic Range4 OSR = 256 110 dB Signal-to-Noise Ratio (SNR) fIN = 1 kHz, VREF = 5 V 89 91 dB fIN = 1 kHz, VREF = 2.5 V 86 dB Spurious-Free Dynamic Range (SFDR) fIN = 1 kHz 104 dB Total Harmonic Distortion (THD) fIN = 1 kHz −102 dB Signal-to-Noise-and-Distortion (SINAD) fIN = 1 kHz, VREF = 5 V 90.5 dB fIN = 1 kHz, VREF = 2.5 V 85.5 dB 1 LSB means least significant bit. With the 5 V input range, 1 LSB is 76.3 µV. 2 See the Terminology section. These specifications include full temperature range variation, but not the error contribution from the external reference. 3 All ac accuracy specifications in dB are referred to an input full-scale range (FSR). Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. 4 The oversampled dynamic range is the ratio of the peak signal power to the noise power (for a small input) measured in the ADC output FFT from dc up to fS/(2 × OSR), where fS is the ADC sample rate and OSR is the oversampling ratio. Rev. 0 | Page 3 of 25 |
Аналогичный номер детали - AD7981 |
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Аналогичное описание - AD7981 |
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