產品詳細資料

Resolution (Bits) 12 Sample rate (max) (ksps) 140 Number of input channels 8 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 Comparator, GPIO, Oscillator, Small Size Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.05 Analog supply voltage (min) (V) 2.35 Analog supply voltage (max) (V) 5.5 SNR (dB) 73 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 140 Number of input channels 8 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 Comparator, GPIO, Oscillator, Small Size Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.05 Analog supply voltage (min) (V) 2.35 Analog supply voltage (max) (V) 5.5 SNR (dB) 73 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
WQFN (RTE) 16 9 mm² (3 mm × 3 mm)
  • Small package size:
    • 3-mm × 3-mm WQFN
  • 8 channels configurable as any combination of:
    • Up to 8 analog inputs, digital inputs, or digital outputs
  • GPIOs for I/O expansion:
    • Open-drain, push-pull digital outputs
  • Analog watchdog:
    • Programmable thresholds per channel
    • Event counter for transient rejection
  • Wide operating ranges:
    • AVDD: 2.35 V to 5.5 V
    • DVDD: 1.65 V to 5.5 V
    • –40°C to +85°C temperature range
  • CRC for read/write operations:
    • CRC on data read/write
    • CRC on power-up configuration
  • I2C interface:
    • Up to 3.4 MHz (high-speed mode)
    • 8 configurable I2C addresses
  • Programmable averaging filters
  • Root-mean-square module:
    • 16-bit true RMS output
    • Programmable RMS time window
  • Zero-crossing-detect module:
    • ZCD output corresponding to any analog input
    • Built-in transient rejection and hysteresis
    • Digitally adjustable detection threshold
  • Small package size:
    • 3-mm × 3-mm WQFN
  • 8 channels configurable as any combination of:
    • Up to 8 analog inputs, digital inputs, or digital outputs
  • GPIOs for I/O expansion:
    • Open-drain, push-pull digital outputs
  • Analog watchdog:
    • Programmable thresholds per channel
    • Event counter for transient rejection
  • Wide operating ranges:
    • AVDD: 2.35 V to 5.5 V
    • DVDD: 1.65 V to 5.5 V
    • –40°C to +85°C temperature range
  • CRC for read/write operations:
    • CRC on data read/write
    • CRC on power-up configuration
  • I2C interface:
    • Up to 3.4 MHz (high-speed mode)
    • 8 configurable I2C addresses
  • Programmable averaging filters
  • Root-mean-square module:
    • 16-bit true RMS output
    • Programmable RMS time window
  • Zero-crossing-detect module:
    • ZCD output corresponding to any analog input
    • Built-in transient rejection and hysteresis
    • Digitally adjustable detection threshold

The ADS7128 is an easy-to-use, 8-channel, multiplexed, 12-bit, successive approximation register analog-to-digital converter (SAR ADC). The eight channels can be independently configured as either analog inputs, digital inputs, or digital outputs. The device has an internal oscillator for ADC conversion processes.

The ADS7128 communicates via an I2C-compatible interface and operates in either autonomous or single-shot conversion mode. The ADS7128 implements analog watchdog function by event-triggered interrupts per channel using a digital window comparator with programmable high and low thresholds, hysteresis, and an event counter. The ADS7128 has a built-in cyclic redundancy check (CRC) for data read/write operations and the power-up configuration. The ADS7128 features a root-mean-square (RMS) module that computes a 16-bit true RMS result for any analog input channel. The integrated zero-crossing-detect (ZCD) module allows for transient rejection and hysteresis near the configurable threshold crossings.

The ADS7128 is an easy-to-use, 8-channel, multiplexed, 12-bit, successive approximation register analog-to-digital converter (SAR ADC). The eight channels can be independently configured as either analog inputs, digital inputs, or digital outputs. The device has an internal oscillator for ADC conversion processes.

The ADS7128 communicates via an I2C-compatible interface and operates in either autonomous or single-shot conversion mode. The ADS7128 implements analog watchdog function by event-triggered interrupts per channel using a digital window comparator with programmable high and low thresholds, hysteresis, and an event counter. The ADS7128 has a built-in cyclic redundancy check (CRC) for data read/write operations and the power-up configuration. The ADS7128 features a root-mean-square (RMS) module that computes a 16-bit true RMS result for any analog input channel. The integrated zero-crossing-detect (ZCD) module allows for transient rejection and hysteresis near the configurable threshold crossings.

下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
針腳對針腳的功能與所比較的裝置相同。
TLA2528 現行 具有 I2C 介面和 GPIO 的小型 8 通道 12 位元類比轉數位轉換器 (ADC) Reduced performance; typical specifications only
TLA2518 現行 具有 SPI 介面和 GPIO 的小型 8 通道 12 位元類比轉數位轉換器 (ADC) Reduced performance; typical specifications only; SPI
ADS7028 現行 具有 SPI、GPIO 和 CRC 的小型八通道 12 位元類比轉數位轉換器 (ADC) Higher sample rate (1MSPS), SPI interface
ADS7138 現行 具有 I2C、GPIO 和 CRC 的 8 通道、140-kSPS 12 位元類比轉數位轉換器 (ADC) Similar performance, no root-mean-square (RMS) module

技術文件

找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 6
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 ADS7128 Small, 8-Channel, 12-Bit ADC With I2C Interface, GPIOs, and CRC datasheet (Rev. A) PDF | HTML 2020/5/20
應用說明 A Simple, Java-Based CRC Calculator PDF | HTML 2026/3/4
Application brief ADS7x28 True Root-Mean-Square Module PDF | HTML 2023/2/6
Application brief Resolution-Boosting ADS7138 Using Programmable Averaging Filter 2019/12/1
使用指南 BP-ADS7128 BoosterPack™ Plug-In Module User's Guide 2019/5/21
Application brief Zero-Crossing Detection with False Trigger Avoidance 2019/1/9

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

BP-ADS7128 — ADS7128 8 通道 12 位元 ADC BoosterPack™ 外掛程式模組

BP-ADS7128 BoosterPack™ 外掛模組是用於評估漸近法暫存器 (SAR) 類比轉數位轉換器 (ADC) ADS7128 裝置及裝置系列性能的平台,這些裝置是具有 I/O 擴展器的類比、奈米功率、八輸入通道裝置。

BP-ADS7128 旨在展示 ADS7128 的各種運作模式。可搭配 MSP-EXP432E401Y MCU LaunchPad™ 開發套件(另售)使用。

支援產品和硬體
有庫存
限制:
??asset.out-of-stock-ti_zh_TW??
無法提供
支援軟體

SBAC284 — ADS7128 C Header File

支援產品和硬體
模擬型號

ADS7128 IBIS Model

SBAM437.ZIP (139 KB) - IBIS 模型
支援產品和硬體
模擬型號

ADS7128 TINA-TI Reference Design

SBAM429.TSC (274 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

TLA2528 TINA-TI Reference Design

SBAM432.TSC (272 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

TLA2528 TINA-TI Spice Model

SBAM431.ZIP (11 KB) - TINA-TI Spice 模型
支援產品和硬體
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。

支援產品和硬體
計算工具

SBAR008 — ADS7xx8 CRC Calculator

支援產品和硬體
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.
支援產品和硬體
參考設計

TIDA-00420 — ADC 架構、數位隔離、廣泛輸入、16 通道、AC/DC 二進位輸入參考設計

此參考設計展現具強化型隔離的成本最佳化、可擴充 ADC 架構 AC/DC 二進位輸入模組 (BIM) 架構。10 位元或 12 位元 SAR ADC 的 16 通道,用於感測多個二進位輸入。運算放大器除了維持低每頻道成本外,也可為各輸入提供最佳訊號調節。數位隔離器 (基本型或強化型) 可用於隔離主機 MCU 或處理器。提供可測量溫度,濕度和磁場以進行診斷的設備。具可配置輸出的強化型隔離 DC/DC 電源供應器,可提供二進位模組所需的電源。

支援產品和硬體
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

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。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

內容係由 TI 和社群貢獻者依「現狀」提供,且不構成 TI 規範。檢視使用條款

若有關於品質、封裝或訂購 TI 產品的問題,請參閱 TI 支援。​​​​​​​​​​​​​​

影片