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AD7771 数据表(PDF) 7 Page - Analog Devices |
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AD7771 数据表(HTML) 7 Page - Analog Devices |
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7 / 99 page  AD7771 Data Sheet Rev. 0 | Page 6 of 98 Parameter Test Conditions/Comments Min Typ Max Unit TEMPERATURE RANGE Specified Performance TMIN to TMAX −40 +105 °C Functional2 TMIN to TMAX −40 +125 °C TEMPERATURE SENSOR Accuracy ±2 °C DIGITAL FILTER RESPONSE Group Delay See the SRC Group Delay section Settling Time See the Settling Time section Pass Band −0.1 dB See the SRC Bandwidth section −3 dB See the SRC Bandwidth section Decimation Rate Sinc3 16 4095.99 Sinc5 16 2048 CLOCK SOURCE Frequency High resolution mode 0.655 8.192 MHz Low power mode 1.3 4.096 MHz Duty Cycle 45:55 50:50 55:45 % Σ-Δ ADC Speed and Performance Resolution 24 Bits ODR High resolution mode 128 kSPS Low power mode 32 kSPS No Missing Codes Sinc3, up to 24 kSPS 24 Bits Sinc5 24 Bits AC Accuracy Dynamic Range Shorted inputs, PGAGAIN = 1 128 kSPS High resolution mode (sinc5) 95 dB 32 kSPS High resolution mode (sinc5) 107 dB 16 kSPS High resolution mode (sinc3) 105.9 dB 4 kSPS High resolution mode (sinc3) 116 dB 32 kSPS Low power mode (sinc5) 94.5 dB 8 kSPS Low power mode (sinc5) 106.5 dB 8 kSPS Low power mode (sinc3) 95.8 dB 2 kSPS Low power mode (sinc3) 111.8 dB Total Harmonic Distortion (THD) −0.5 dBFS, high resolution mode −109 dB −0.5 dBFS, low power mode −105 dB Signal-to-Noise-and-Distortion Ratio (SINAD) fIN = 60 Hz 106 dB Spurious-Free Dynamic Range (SFDR) High resolution mode, 16 kSPS, PGAGAIN = 1 132 dB Intermodulation Distortion (IMD) fA = 50 Hz, fB = 51 Hz, high resolution mode −125 dB fA = 50 Hz, fB = 51 Hz, low power mode −105 dB DC Power Supply Rejection AVDD1x = 3.3 V −90 dB DC Common-Mode Rejection Ratio 80 dB Crosstalk −120 dB DC ACCURACY Integral Nonlinearity (INL) Endpoint method High Resolution PGAGAIN = 1 ±8 ±15 ppm of FSR Other PGA gains ±4 ±15 ppm of FSR |
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