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AD7675AST 数据表(PDF) 2 Page - Analog Devices |
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AD7675AST 数据表(HTML) 2 Page - Analog Devices |
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2 / 20 page  REV. 0 –2– AD7675–SPECIFICATIONS Parameter Conditions Min Typ Max Unit RESOLUTION 16 Bits ANALOG INPUT Voltage Range VIN+ – VIN– –VREF +VREF V Operating Input Voltage VIN+, VIN– to AGND –0.1 +3 V Analog Input CMRR fIN = 10 kHz 79 dB Input Current 100 kSPS Throughput 1 µA Input Impedance See Analog Input Section THROUGHPUT SPEED Complete Cycle 10 µs Throughput Rate 0 100 kSPS DC ACCURACY Integral Linearity Error –1.5 +1.5 LSB1 No Missing Codes 16 Bits Transition Noise 0.35 LSB +Full-Scale Error2 –22 +22 LSB –Full-Scale Error 2 –22 +22 LSB Zero Error 2 –8 +8 LSB Power Supply Sensitivity AVDD = 5 V ± 5% ±0.5 LSB AC ACCURACY Signal-to-Noise fIN = 20 kHz 92 94 dB 3 fIN = 45 kHz 94 dB3 Spurious Free Dynamic Range fIN = 20 kHz 104.5 110 dB 3 fIN = 45 kHz 110 dB 3 Total Harmonic Distortion fIN = 20 kHz –110 –103.5 dB3 fIN = 45 kHz –110 dB 3 Signal-to-(Noise+Distortion) fIN = 20 kHz 92 94 dB 3 fIN = 45 kHz 94 dB3 fIN = 45 kHz, –60 dB Input 34 dB 3 –3 dB Input Bandwidth 3.9 MHz SAMPLING DYNAMICS Aperture Delay 2ns Aperture Jitter 5 ps rms Transient Response Full-Scale Step 8.75 µs REFERENCE External Reference Voltage Range 2.3 2.5 AVDD – 1.85 V External Reference Current Drain 100 kSPS Throughput 35 µA DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 V VIH +2.0 DVDD + 0.3 V IIL –1 +1 µA IIH –1 +1 µA DIGITAL OUTPUTS Data Format Parallel or Serial 16-Bit Conversion Results Available Pipeline Delay Immediately After Completed Conversion VOL ISINK = 1.6 mA 0.4 V VOH ISOURCE = –100 µA OVDD – 0.6 V POWER SUPPLIES Specified Performance AVDD 4.75 5 5.25 V DVDD 4.75 5 5.25 V OVDD 2.7 5.25 V Operating Current 300 kSPS Throughput AVDD 3mA DVDD 4 750 µA OVDD4 7.5 µA Power Dissipation 4 100 kSPS Throughput 1 7 2 5 mW 100 SPS Throughput 15 µW In Power-Down Mode5 7 µW TEMPERATURE RANGE 6 Specified Performance TMIN to TMAX –40 +85 °C NOTES 1LSB means Least Significant Bit. With the ±2.5 V input range, one LSB is 76.3 µV. 2See Definition of Specifications section. These specifications do not include the error contribution from the external reference. 3All specifications in dB are referred to a full-scale input FS. Tested with an input signal at 0.5 dB below full-scale unless otherwise specified. 4Tested in parallel reading mode. 5With all digital inputs forced to OVDD or OGND respectively. 6Contact factory for extended temperature range. Specifications subject to change without notice. (–40 C to +85 C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.) |
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