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ADS7924

現行

具智慧型系統電源控制的 12 位元、4 通道多工器輸入 SAR ADC

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產品規格表

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功能相同，但針腳輸出與所比較的裝置不同。
ADS7142 現行 採用 1.5-mm x 2-mm QFN 封裝，具 1.8V 操作電壓的 12 位元 140 kSPS 2 通道奈米功率 SAR ADC 2 channel, nanopower, small size

ADS7924

現行
立即訂購

產品詳細資料

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 mm × 3 mm)
  • 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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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 ADS7924 2.2 V, 12-Bit, 4-Channel, MicroPOWER Analog-to-Digital Converter With I2C Interface datasheet (Rev. C) PDF | HTML 2017/9/15
應用說明 A Basic Guide to I2C PDF | HTML 2022/11/8
電子書 Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015/5/21
應用說明 Determining Minimum Acquisition Times for SAR ADCs, part 2 2011/3/17
應用說明 Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 2010/11/10
應用說明 Obtaining 17 Bits of Resolution using a 12-Bit A/D System on a Chip 2010/6/24

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

ADS7924EVM-PDK — ADS7924 性能展示套件

The ADS7924EVM-PDK is a complete evaluation/demonstration kit, which combines the ADS7924EVM with the MSP430-based MMB3 motherboard for use with a personal computer. The MMB3 motherboard allows the ADS7924EVM to connect to a computer via a USB port. The ADS7924EVM-PDK is controlled by the (...)

使用指南: PDF
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模擬型號

ADS7924 IBIS Model

SBAM023.ZIP (86 KB) - IBIS 模型
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模擬型號

ADS7924 TINA-TI Reference Design

SBAM427.TSC (556 KB) - TINA-TI 參考設計
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模擬型號

ADS7924 TINA-TI Spice Mode

SBAM428.ZIP (9 KB) - TINA-TI Spice 模型
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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設計工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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參考設計

TIDA-00782 — 使用 DLP® 技術的可攜式、高亮度 HD 投影顯示參考設計

此參考設計採用 DLP Pico™ 0.45 英吋 WXGA 顯示晶片組，可為投影顯示應用提供 HD 解析度，適用於投影顯示應用，例如配件投影機、智慧型投影機、行動智慧型 TV、內建式投影機（如筆記型電腦和熱點中的投影功能）等應用。此設計中使用的晶片組包含 DLP4501 (.45 WXGA) DMD 和 DLPC6401 顯示控制器。外部 LED 驅動器參考設計可透過以下連結存取：PMP4356

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RTE) 16 Ultra Librarian
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