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ADS7254IPW Datasheet(PDF) 7 Page - Texas Instruments |
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ADS7254IPW Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 69 page  ADS8354, ADS7854, ADS7254 www.ti.com SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014 7.6 Electrical Characteristics: ADS7854 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 –1.5 ±0.5 1.5 LSB INL Integral nonlinearity 16-clock mode –2 ±0.8 2 LSB 32-clock mode –0.99 ±0.4 1 LSB DNL Differential nonlinearity 16-clock mode –1 ±0.7 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 CMRR Common-mode rejection ratio Both ADCs, dc to 20 kHz 70 dB AC ACCURACY(2) 32-clock mode 81.8 83.7 dB VREF = 2.5 V, ±VREF input range 16-clock mode 82.9 dB 32-clock mode 83.7 dB VREF = 2.5 V, SINAD Signal-to-noise + distortion ±2 × VREF input range 16-clock mode 82.9 dB 32-clock mode 84.6 dB VREF = 5 V (external), ±VREF input range 16-clock mode 84.1 dB 32-clock mode 82 84 dB VREF = 2.5 V, ±VREF input range 16-clock mode 83.5 dB 32-clock mode 84 dB VREF = 2.5 V, SNR Signal-to-noise ratio ±2 × VREF input range 16-clock mode 83.5 dB 32-clock mode 85 dB VREF = 5 V (external), ±VREF input range 16-clock mode 84.5 dB 32-clock mode –95 dB VREF = 2.5 V, ±VREF input range 16-clock mode –92 dB 32-clock mode –95 dB VREF = 2.5 V, THD Total harmonic distortion ±2 × VREF input range 16-clock mode –92 dB 32-clock mode –98 dB VREF = 5 V (external), ±VREF input range 16-clock mode –93 dB 32-clock mode 97.5 dB VREF = 2.5 V, ±VREF input range 16-clock mode 95 dB 32-clock mode 97.5 dB VREF = 2.5 V, SFDR Spurious-free dynamic range ±2 × VREF input range 16-clock mode 95 dB 32-clock mode 99 dB VREF = 5 V (external), ±VREF input range 16-clock mode 95 dB fIN = 15 kHz at 10 %FS, ISOXT ADC-to-ADC isolation –90 dB fNOISE = 25 kHz at FS (1) LSB = least significant bit. (2) All ac parameters are tested at –0.5 dBFS and a 20-kHz input frequency. Copyright © 2013–2014, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADS8354 ADS7854 ADS7254 |
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