ADS7924
- 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
- Four-Channel Scanning:
- 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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | ADS7924 2.2 V, 12-Bit, 4-Channel, MicroPOWER Analog-to-Digital Converter With I2C Interface datasheet (Rev. C) | PDF | HTML | 2017年 9月 15日 |
Application note | A Basic Guide to I2C | PDF | HTML | 2022年 11月 8日 | |
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 2015年 5月 21日 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 2 | 2011年 3月 17日 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) | 2010年 11月 10日 | ||
Application note | Obtaining 17 Bits of Resolution using a 12-Bit A/D System on a Chip | 2010年 6月 24日 | ||
EVM User's guide | ADS7924EVM/ADS7924EVM-PDK User's Guide | 2010年 6月 9日 |
設計與開發
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ADS7924EVM — ADS7924 評估模組
The ADS7924EVM is an evaluation board for the ADS7924, a four-channel, 12-bit, analog-to-digital converter (ADC) with an I²C interface. The modular EVM uses the ADS7924 and minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS7924 are (...)
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 (...)
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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產品
精密度運算放大器 (Vos<1mV)
一般用途運算放大器
音訊運算放大器
轉阻放大器
高速運算放大器 (GBW ≥ 50 MHz)
功率運算放大器
視訊放大器
線路驅動器
轉導放大器與雷射驅動器
全差分放大器
精確 ADC
生物感測 AFE
高速 ADC (≥10 MSPS)
接收器
觸控式螢幕控制器
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儀器放大器
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配備整合式分流電阻器的類比電流感測放大器
具整合式分流電阻器的數位電源監測器
晶粒與晶圓服務
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
TIDA-00782 — 使用 DLP® 技術的可攜式、高亮度 HD 投影顯示參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RTE) | 16 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
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建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。