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ADS7924IRTER Datasheet(PDF) 9 Page - Texas Instruments |
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ADS7924IRTER Datasheet(HTML) 9 Page - Texas Instruments |
9 / 42 page I C 2 Interface MUXOUT SAR ADC ADCIN AGND AGND AVDD DVDD CH0Data CH1Data CH2Data CH3Data CH0UpperLimit CH1UpperLimit CH2UpperLimit CH3UpperLimit CH0LowerLimit CH1LowerLimit CH2LowerLimit CH3LowerLimit Comparatorand AlarmDetect Control and Sequencer ClockOscillator SDA SCL RESET PWRCON A0 INT Input Multiplexer CH0 CH1 CH2 CH3 Registers ADS7924 www.ti.com SBAS482A – JANUARY 2010 – REVISED MAY 2010 OVERVIEW The ADS7924 is a miniature, four-channel, multiplexed, 12-bit, analog-to-digital converter (ADC) with an I2C serial interface. Figure 19 shows a block diagram. The four-channel input multiplexer is routed through external pins to allow a common signal conditioning block to be used for all four channels. The PWRCON digital output can be used to shut down active circuitry used in the signal conditioning; see the Application Information section for additional details. The successive-approximation-register (SAR) ADC performs a no-latency conversion on the selected input channel and stores the data in a dedicated register. A digital threshold comparator with programmable upper and lower limits can be enabled and used to create an alarm monitor. A dedicated interrupt output pin (INT) indicates when an alarm occurs. Two I2C addresses are available and are selected with the dedicated digital input pin A0. Both standard and fast mode formats for I2C are supported. Figure 19. ADS7924 Block Diagram Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): ADS7924 |
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