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ADS7924

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12-Bit-SAR-ADC mit 4 Kanälen und MUX-Eingang und intelligenter Systemleistungssteuerung

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ADS7924

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Produktdetails

Resolution (Bits) 12 Sample rate (max) (ksps) 100 Number of input channels 4 Interface type I2C Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, Small Size Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.5 Analog supply voltage (min) (V) 2.2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 100 Number of input channels 4 Interface type I2C Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Oscillator, Small Size Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.5 Analog supply voltage (min) (V) 2.2 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
WQFN (RTE) 16 9 mm² 3 x 3
  • Intelligent Monitoring:
    • Auto-Sequencing of 4-Channel Multiplexer
    • Individual Alarm Thresholds for Each Channel
    • Programmable Scan Rate
  • MicroPOWER™ Monitoring:
    • Four-Channel Scanning:
      • Every 1 ms → 25 µW
      • Every 10 ms → 5 µW
      • < 1 µA of Power-Down Current
    • Programmable Interrupt Pin Controls Shutdown/Wakeup of the Microcontroller
    • Auto Power-Down Control
    • PWRCON Pin Allows Shutdown of External Operational Amplifiers
  • Wide Supply Range:
    • Analog Supply: 2.2 V to 5.5 V
    • Digital Supply: 1.65 V to 5.5 V
  • Small Footprint: 3-mm × 3-mm WQFN
  • Intelligent Monitoring:
    • Auto-Sequencing of 4-Channel Multiplexer
    • Individual Alarm Thresholds for Each Channel
    • Programmable Scan Rate
  • MicroPOWER™ Monitoring:
    • Four-Channel Scanning:
      • Every 1 ms → 25 µW
      • Every 10 ms → 5 µW
      • < 1 µA of Power-Down Current
    • Programmable Interrupt Pin Controls Shutdown/Wakeup of the Microcontroller
    • Auto Power-Down Control
    • PWRCON Pin Allows Shutdown of External Operational Amplifiers
  • Wide Supply Range:
    • Analog Supply: 2.2 V to 5.5 V
    • Digital Supply: 1.65 V to 5.5 V
  • Small Footprint: 3-mm × 3-mm WQFN

The ADS7924 is a four-channel, 12-bit, analog-to-digital converter (ADC) with an I2C™ interface. With its low-power ADC core, support for low-supply operation, and a flexible measurement sequencer that essentially eliminates power consumption between conversions, the ADS7924 forms a complete monitoring system for power-critical applications such as battery-powered equipment and energy harvesting systems.

The ADS7924 features dedicated data registers and onboard programmable digital threshold comparators for each input. Alarm conditions can be programmed that generate an interrupt. The combination of data buffering, programmable threshold comparisons, and alarm interrupts minimize the host microcontroller time needed to supervise the ADS7924.

The four-channel input multiplexer (MUX) is routed through external pins to allow a common signal conditioning circuit to be used between the MUX and ADC, thereby reducing overall component count. The low-power ADC uses the analog supply as its reference and can acquire and convert signals in only 10 µs. An onboard oscillator eliminates the need to supply a master clock.

The ADS7924 is offered in a small 3-mm × 3-mm WQFN and is fully specified for operation over the industrial temperature range of –40°C to 85°C.

The ADS7924 is a four-channel, 12-bit, analog-to-digital converter (ADC) with an I2C™ interface. With its low-power ADC core, support for low-supply operation, and a flexible measurement sequencer that essentially eliminates power consumption between conversions, the ADS7924 forms a complete monitoring system for power-critical applications such as battery-powered equipment and energy harvesting systems.

The ADS7924 features dedicated data registers and onboard programmable digital threshold comparators for each input. Alarm conditions can be programmed that generate an interrupt. The combination of data buffering, programmable threshold comparisons, and alarm interrupts minimize the host microcontroller time needed to supervise the ADS7924.

The four-channel input multiplexer (MUX) is routed through external pins to allow a common signal conditioning circuit to be used between the MUX and ADC, thereby reducing overall component count. The low-power ADC uses the analog supply as its reference and can acquire and convert signals in only 10 µs. An onboard oscillator eliminates the need to supply a master clock.

The ADS7924 is offered in a small 3-mm × 3-mm WQFN and is fully specified for operation over the industrial temperature range of –40°C to 85°C.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet ADS7924 2.2 V, 12-Bit, 4-Channel, MicroPOWER Analog-to-Digital Converter With I2C Interface datasheet (Rev. C) PDF | HTML 15 Sep 2017
Application note A Basic Guide to I2C PDF | HTML 08 Nov 2022
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 Mai 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mär 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
Application note Obtaining 17 Bits of Resolution using a 12-Bit A/D System on a Chip 24 Jun 2010

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

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Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTE) 16 Ultra Librarian
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  • Kontinuierliches Zuverlässigkeitsmonitoring
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