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ADS1230IPW Datasheet(PDF) 6 Page - Texas Instruments |
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ADS1230IPW Datasheet(HTML) 6 Page - Texas Instruments |
6 / 30 page ADS1230 SBAS366B – OCTOBER 2006 – REVISED SEPTEMBER 2012 www.ti.com NOISE PERFORMANCE The ADS1230 offers outstanding noise performance. Table 1 summarizes the typical noise performance with inputs shorted externally for different data rates and voltage reference values. The RMS and Peak-to-Peak noise are referred to the input. The effective number of bits (ENOB) is defined as: ENOB = ln (FSR/RMS noise)/ln(2) The Noise-Free Bits are defined as: Noise-Free Bits = ln (FSR/Peak-to-Peak Noise)/ln(2) Where: FSR (Full-Scale Range) = VREF/Gain. Table 1. Noise Performance for AVDD = 5V and VREF = 5V RMS NOISE PEAK-TO-PEAK NOISE(1) ENOB DATA RATE GAIN (nV) (nV) (RMS) NOISE-FREE BITS 64 53 290 20.5 18 10 128 40 198 19.8 17.5 64 100 480 19.5 17.3 80 128 88 480 18.7 16.3 (1) Peak-to-peak data are based on direct measurement. Table 2. Noise Performance for AVDD = 3V and VREF = 3V RMS NOISE PEAK-TO-PEAK NOISE(1) ENOB DATA RATE GAIN (nV) (nV) (RMS) NOISE-FREE BITS 64 46 290 20.6 18 10 128 49 259 19.6 17.2 64 100 576 19.5 17 80 128 102 461 18.5 16.3 (1) Peak-to-peak data are based on direct measurement. 6 Submit Documentation Feedback Copyright © 2006–2012, Texas Instruments Incorporated Product Folder Links: ADS1230 |
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