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AD7690 bảng dữ liệu(PDF) 3 Page - Analog Devices |
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AD7690 bảng dữ liệu(HTML) 3 Page - Analog Devices |
3 / 24 page Data Sheet AD7690 SPECIFICATIONS VDD = 4.75 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 Min Typ Max Unit RESOLUTION 18 Bits ANALOG INPUT Voltage Range IN+ to 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 0 400 kSPS Transient Response Full-scale step 400 ns ACCURACY No Missing Codes 18 Bits Integral Linearity Error −1.5 ±0.75 +1.5 LSB2 Differential Linearity Error −1 ±0.5 +1.25 LSB Transition Noise REF = VDD = 5 V 0.75 LSB Gain Error3 −40 ±2 +40 LSB Gain Error Temperature Drift ±0.3 ppm/°C Zero Error3 −0.8 +0.8 mV Zero Temperature Drift ±0.3 ppm/°C Power Supply Sensitivity VDD = 5 V ± 5% ±0.25 LSB AC ACCURACY Dynamic Range VREF = 5 V 101 102 dB4 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 94.5 96 dB Spurious-Free Dynamic Range fIN = 1 kHz, VREF = 5 V −125 dB Total Harmonic Distortion fIN = 1 kHz, VREF = 5 V −125 dB Signal-to-(Noise + Distortion) fIN = 1 kHz, VREF = 5 V 100 101.5 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 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 400 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. Rev. C | Page 3 of 24 |
Số phần tương tự - AD7690_15 |
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Mô tả tương tự - AD7690_15 |
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