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ADS7253IPW 数据表(PDF) 7 Page - Texas Instruments |
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ADS7253IPW 数据表(HTML) 7 Page - Texas Instruments |
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7 / 71 page  ADS8353, ADS7853, ADS7253 www.ti.com SBAS584B – OCTOBER 2013 – REVISED AUGUST 2014 7.6 Electrical Characteristics: ADS7853 All minimum and maximum specifications are at TA = –40°C to 125°C, AVDD = 5 V, DVDD = 3.3 V, VREF_A = VREF_B = VREF = 2.5 V (internal), and fDATA = 1 MSPS, unless otherwise noted. Typical values are at TA = 25°C, AVDD = 5 V, and DVDD = 3.3 V. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RESOLUTION Resolution 14 Bits DC ACCURACY(1) 32-clock mode 14 Bits NMC No missing codes 16-clock mode 13 Bits 32-clock mode –2 ±0.7 2 LSB INL Integral nonlinearity 16-clock mode –2.5 ±1 2.5 LSB 32-clock mode –0.99 ±0.5 1 LSB DNL Differential nonlinearity 16-clock mode –1 ±0.9 2 LSB EIO Input offset error –1 ±0.5 1 mV EIO match ADC_A to ADC_B –1 ±0.5 1 mV dEIO/dT Input offset thermal drift ±1 μV/°C EG Gain error Referenced to the voltage at REFIO_x –0.1 ±0.05 0.1 %FS EG match ADC_A to ADC_B –0.1 ±0.05 0.1 %FS dEG/dT Gain error thermal drift Referenced to the voltage at REFIO_x ±1 ppm/°C AC ACCURACY(2) 32-clock mode 78.4 80.9 dB VREF = 2.5 V, VREF input range 16-clock mode 80.3 dB 32-clock mode 81.4 dB VREF = 2.5 V, SINAD Signal-to-noise + distortion 2 × VREF input range 16-clock mode 80.8 dB 32-clock mode 83.9 dB VREF = 5 V (external), VREF input range 16-clock mode 82.9 dB 32-clock mode 78.5 81 dB VREF = 2.5 V, VREF input range 16-clock mode 80.5 dB 32-clock mode 81.5 dB VREF = 2.5 V, SNR Signal-to-noise ratio 2 × VREF input range 16-clock mode 81 dB 32-clock mode 84 dB VREF = 5 V (external), VREF input range 16-clock mode 83.5 dB 32-clock mode –100 dB VREF = 2.5 V, VREF input range 16-clock mode –93 dB 32-clock mode –98 dB VREF = 2.5 V, THD Total harmonic distortion 2 × VREF input range 16-clock mode –94 dB 32-clock mode –102 dB VREF = 5 V (external), VREF input range 16-clock mode –92 dB 32-clock mode 100 dB VREF = 2.5 V, VREF input range 16-clock mode 95 dB 32-clock mode 100 dB VREF = 2.5 V, SFDR Spurious-free dynamic range 2 × VREF input range 16-clock mode 95 dB 32-clock mode 102 dB VREF = 5 V (external), VREF input range 16-clock mode 95 dB fIN = 15 kHz at 10 %FS, ISOXT ADC-to-ADC isolation –100 dB fNOISE = 25 kHz at FS (1) LSB = least significant bit. (2) All ac parameters are tested at –0.5 dBFS and a 2-kHz input frequency. Copyright © 2013–2014, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADS8353 ADS7853 ADS7253 |
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