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ADS7924IRTER Datasheet(PDF) 1 Page - Texas Instruments |
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ADS7924IRTER Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 50 page  4-Channel MUX CH0 CH1 CH2 CH3 MUXOUT ADCIN AVDD DVDD AGND DGND SAR ADC DataBuffers, Sequencer,and Alarms I C Interface 2 SDA SCL A0 INT PWRCON RESET Oscillator Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADS7924 SBAS482B – JANUARY 2010 – REVISED SEPTEMBER 2015 ADS7924 2.2 V, 12-Bit, 4-Channel, MicroPOWER Analog-to-Digital Converter With I2C Interface 1 Features 3 Description The ADS7924 is a four-channel, 12-bit, analog-to- 1 • Intelligent Monitoring: digital converter (ADC) with an I2C™ interface. With – Auto-Sequencing of 4-Channel Multiplexer its low-power ADC core, support for low-supply – Individual Alarm Thresholds for Each Channel operation, and a flexible measurement sequencer that essentially eliminates power consumption – Programmable Scan Rate between conversions, the ADS7924 forms a complete • MicroPOWER™ Monitoring: monitoring system for power-critical applications such – Four-Channel Scanning: as battery-powered equipment and energy harvesting systems. – Every 1 ms → 25 μW – Every 10 ms → 5 μW The ADS7924 features dedicated data registers and onboard programmable digital threshold comparators – < 1 µA of Power-Down Current for each input. Alarm conditions can be programmed – Programmable Interrupt Pin Controls that generate an interrupt. The combination of data Shutdown/Wakeup of the Microcontroller buffering, programmable threshold comparisons, and – Auto Power-Down Control alarm interrupts minimize the host microcontroller time needed to supervise the ADS7924. – PWRCON Pin Allows Shutdown of External Operational Amplifiers The four-channel input multiplexer (MUX) is routed through external pins to allow a common signal • Wide Supply Range: conditioning circuit to be used between the MUX and – Analog Supply: 2.2 V to 5.5 V ADC, thereby reducing overall component count. The – Digital Supply: 1.65 V to 5.5 V low-power ADC uses the analog supply as its • Small Footprint: 3-mm × 3-mm QFN reference and can acquire and convert signals in only 10 μs. An onboard oscillator eliminates the need to supply a master clock. 2 Applications The ADS7924 is offered in a small 3-mm × 3-mm • Portable and Battery-Powered Systems: QFN and is fully specified for operation over the – Medical, Communications, Remote Sensor industrial temperature range of –40°C to 85°C. Signal Monitoring, Power-Supply Monitoring • Energy Harvesting Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) ADS7924 WQFN (16) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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