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ADS7924 Datasheet(PDF) 1 Page - Texas Instruments |
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ADS7924 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 45 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 ADS7924 www.ti.com SBAS482A – JANUARY 2010 – REVISED MAY 2010 2.2V, 12-Bit, 4-Channel, microPOWER™ ANALOG-TO-DIGITAL CONVERTER WITH I2C INTERFACE Check for Samples: ADS7924 1 FEATURES DESCRIPTION 234 • Intelligent Monitoring: The ADS7924 is a four-channel, 12-bit, analog-to-digital converter (ADC) with an I2C™ – Auto-Sequencing of 4-Channel Multiplexer interface. With its low-power ADC core, support for – Individual Alarm Thresholds for Each low-supply operation, and a flexible measurement Channel sequencer that essentially eliminates power – Programmable Scan Rate consumption between conversions, the ADS7924 forms a complete monitoring system for power-critical • Micropower Monitoring: applications such as battery-powered equipment and – Four-Channel Scanning: energy harvesting systems. – Every 1ms → 25mW The ADS7924 features dedicated data registers and – Every 10ms → 5mW onboard programmable digital threshold comparators – < 1µA of Power-Down Current for each input. Alarm conditions can be programmed that generate an interrupt. The combination of data – Programmable Interrupt Pin Controls buffering, programmable threshold comparisons, and Shutdown/Wakeup of the Microcontroller alarm interrupts minimize the host microcontroller – Auto Power-Down Control time needed to supervise the ADS7924. – PWRCON Pin Allows Shutdown of External The four-channel input multiplexer (MUX) is routed Op Amp through external pins to allow a common signal • Wide Supply Range: conditioning circuit to be used between the MUX and – Analog Supply: 2.2V to 5.5V ADC, thereby reducing overall component count. The low-power ADC uses the analog supply as its – Digital Supply: 1.65V to 5.5V reference and can acquire and convert signals in only • Small Footprint: 3mm × 3mm QFN 10ms. An onboard oscillator eliminates the need to supply a master clock. APPLICATIONS The ADS7924 is offered in a small 3mm × 3mm QFN • Portable and Battery-Powered Systems: and is fully specified for operation over the industrial – Medical, Communications, Remote Sensor temperature range of –40°C to +85°C. Signal Monitoring, Power-Supply Monitoring • Energy Harvesting 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 microPOWER is a trademark of Texas Instruments Incorporated. 3 I2C is a trademark of NXP Semiconductors. 4 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2010, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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Similar Description - ADS7924_14 |
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