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ADS1015 Datasheet(PDF) 7 Page - Texas Instruments |
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ADS1015 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 35 page  12-Bit ADC DS I C Interface 2 Voltage Reference Oscillator ALERT/RDY SCL SDA ADDR Gain=2/3, 1, 2,4,8,or16 PGA Comparator ADS1015 AIN1 AIN2 GND AIN0 AIN3 VDD MUX ADS1013 ADS1014 ADS1015 www.ti.com SBAS473C – MAY 2009 – REVISED OCTOBER 2009 OVERVIEW of a differential, switched-capacitor ΔΣ modulator The ADS1013/4/5 are very small, low-power, 12-bit, followed by a digital filter. Input signals are compared delta-sigma ( ΔΣ) analog-to-digital converters (ADCs). to the internal voltage reference. The digital filter The ADS1013/4/5 are extremely easy to configure receives a high-speed bitstream from the modulator and design into a wide variety of applications, and and outputs a code proportional to the input voltage. allow precise measurements to be obtained with very little effort. Both experienced and novice users of The ADS1013/4/5 have two available conversion data converters find designing with the ADS1013/4/5 modes: single-shot mode and continuous conversion family to be intuitive and problem-free. mode. In single-shot mode, the ADC performs one conversion of the input signal upon request and The ADS1013/4/5 consist of a ΔΣ analog-to-digital stores the value to an internal result register. The (A/D) core with adjustable gain (excludes the device then enters a low-power shutdown mode. This ADS1013), an internal voltage reference, a clock mode is intended to provide significant power savings oscillator, and an I2C interface. An additional feature in systems that only require periodic conversions or available on the ADS1014/5 is a programmable digital when there are long idle periods between comparator that provides an alert on a dedicated pin. conversions. In continuous conversion mode, the All of these features are intended to reduce required ADC automatically begins a conversion of the input external circuitry and improve performance. Figure 8 signal as soon as the previous conversion is shows the ADS1015 functional block diagram. completed. The rate of continuous conversion is equal to the programmed data rate. Data can be read The ADS1013/4/5 A/D core measures a differential at any time and always reflect the most recent signal, VIN, that is the difference of AINP and AINN. A completed conversion. MUX is available on the ADS1015. This architecture results in a very strong attenuation of any common-mode signals. The converter core consists Figure 8. ADS1015 Functional Block Diagram Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): ADS1013 ADS1014 ADS1015 |
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