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AD7691BRMZ bảng dữ liệu(PDF) 4 Page - Analog Devices |
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AD7691BRMZ bảng dữ liệu(HTML) 4 Page - Analog Devices |
4 / 29 page Data Sheet AD7691 Rev. E | Page 3 of 28 SPECIFICATIONS VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted. Table 2. Parameter Conditions/Comments Min Typ Max Unit RESOLUTION 18 Bits ANALOG INPUT Voltage Range, VIN IN+ − (IN−) −VREF +VREF V Absolute Input Voltage IN+, IN− −0.1 VREF + 0.1 V Common-Mode Input Range IN+, IN− VREF/2 − 0.1 VREF/2 VREF/2 + 0.1 V Analog Input CMRR fIN = 250 kHz 65 dB Leakage Current at 25°C Acquisition phase 1 nA Input Impedance1 THROUGHPUT Conversion Rate VDD = 4.5 V to 5.25 V 0 250 kSPS VDD = 2.3 V to 4.5 V 0 180 kSPS Transient Response Full-scale step 1.8 μs ACCURACY No Missing Codes 18 Bits Integral Linearity Error −1.5 ±0.75 +1.5 LSB2 Differential Linearity Error −1 ±0.5 +1.25 LSB2 Transition Noise REF = VDD = 5 V 0.75 LSB2 Gain Error3 VDD = 4.5 V to 5.25 V −40 ±2 +40 LSB2 VDD = 2.3 V to 4.5 V −80 ±2 +80 LSB2 Gain Error Temperature Drift ±0.3 ppm/°C Zero Error3 VDD = 4.5 V to 5.25 V −0.8 ±0.1 +0.8 mV VDD = 2.3 V to 4.5 V −3.5 ±0.7 +3.5 mV Zero Temperature Drift ±0.3 ppm/°C Power Supply Sensitivity VDD = 5 V ± 5% ±0.25 LSB2 AC ACCURACY4 Dynamic Range VREF = 5 V 101 102 dB Oversampled Dynamic Range5 fIN = 1 kSPS 125 dB Signal-to-Noise fIN = 1 kHz, VREF = 5 V 100 101.5 dB fIN = 1 kHz, VREF = 2.5 V 95 96.5 dB Spurious-Free Dynamic Range fIN = 1 kHz, VREF = 5 V −125 dB Total Harmonic Distortion fIN = 1 kHz, VREF = 5 V −118 dB Signal-to-(Noise + Distortion) fIN = 1 kHz, VREF = 5 V 100 101.5 dB fIN = 1 kHz, VREF = 2.5 V 95 96.5 dB Intermodulation Distortion6 115 dB 1 See the Analog Inputs section. 2 LSB means least significant bit. With the ±5 V input range, one LSB is 38.15 µV. 3 See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference. 4 All ac accuracy specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. 5 Dynamic range obtained by oversampling the ADC running at a throughput fS of 250 kSPS, followed by postdigital filtering with an output word rate fO. 6 fIN1 = 21.4 kHz and fIN2 = 18.9 kHz, with each tone at −7 dB below full scale. |
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Mô tả tương tự - AD7691BRMZ |
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