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濕度感測器

HDC2021

現行

2% RH 超低功耗數位相對濕度感測器、膠膜上蓋

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產品規格表

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open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
HDC3021 現行 具有可移除式膠膜上蓋的 0.5% RH 數位濕度感測器 Improved accuracy (±0.5 %RH), smaller QFN package with removable tape for conformal coating
HDC3021-Q1 現行 具有可移除式膠膜上蓋的車用 0.5% RH 數位濕度感測器 Automotive (Q100) qualified, higher accuracy (±0.5 %RH) in QFN package (2.5 mm × 2.5 mm)

HDC2021

現行
產品規格表 立即訂購

產品詳細資料

Relative humidity accuracy (typ) (%RH) 2 Temperature accuracy (typ) (°C) 0.2 Relative humidity operating range (typ) (%RH) 0 to 100 Average supply current (typ) (µA) 0.105 Operating temperature range (°C) -40 to 125 Interface type I2C Rating Catalog
Relative humidity accuracy (typ) (%RH) 2 Temperature accuracy (typ) (°C) 0.2 Relative humidity operating range (typ) (%RH) 0 to 100 Average supply current (typ) (µA) 0.105 Operating temperature range (°C) -40 to 125 Interface type I2C Rating Catalog
WSON (DEB) 6 9 mm² (3 mm × 3 mm)
  • Factory-installed polyimide tape to protect sensor during assembly
  • RH measurement range: 0% to 100%
  • Temperature measurement range: –40°C to 125°C

  • Humidity accuracy: ±2% (typical), ±3% (maximum)

  • Temperature accuracy: ±0.2°C (typical), ±0.4°C (maximum)

  • Supply voltage range: 1.62 V to 3.6 V
  • I2C interface compatibility
  • 50 nA sleep mode current
  • 550 nA average supply current (11-bit accuracy option, 1 measurement/second)

  • Continuous conversion or one-shot measurement mode

  • Backward-compatible with HDC2080
  • Factory-installed polyimide tape to protect sensor during assembly
  • RH measurement range: 0% to 100%
  • Temperature measurement range: –40°C to 125°C

  • Humidity accuracy: ±2% (typical), ±3% (maximum)

  • Temperature accuracy: ±0.2°C (typical), ±0.4°C (maximum)

  • Supply voltage range: 1.62 V to 3.6 V
  • I2C interface compatibility
  • 50 nA sleep mode current
  • 550 nA average supply current (11-bit accuracy option, 1 measurement/second)

  • Continuous conversion or one-shot measurement mode

  • Backward-compatible with HDC2080

The HDC2021 is an integrated relative humidity and temperature sensor with a factory-installed polyimide tape cover over the opening of the relative humidity sensor element. The tape cover provides protection against pollutants that can appear in certain stages of the manufacturing process, such as SMT assembly, PCB board wash, and conformal coating. The tape design allows for a full conformal coating of the PCB, and includes an adhesive free corner tab for quick removal using tweezers.

The device is backward-compatible with the HDC2080, providing high accuracy measurements with very low power consumption in a small DFN package. The capacitive-based sensor includes new integrated digital features and a heating element to dissipate condensation and moisture. The digital features include programmable interrupt thresholds to provide alerts and system wake-ups without requiring a microcontroller to continuously monitor the system. Combined with programmable sampling intervals, low power consumption, and 1.8-V supply voltage support, the is designed for ultra-low power battery-operated systems.

The HDC2021 is an integrated relative humidity and temperature sensor with a factory-installed polyimide tape cover over the opening of the relative humidity sensor element. The tape cover provides protection against pollutants that can appear in certain stages of the manufacturing process, such as SMT assembly, PCB board wash, and conformal coating. The tape design allows for a full conformal coating of the PCB, and includes an adhesive free corner tab for quick removal using tweezers.

The device is backward-compatible with the HDC2080, providing high accuracy measurements with very low power consumption in a small DFN package. The capacitive-based sensor includes new integrated digital features and a heating element to dissipate condensation and moisture. The digital features include programmable interrupt thresholds to provide alerts and system wake-ups without requiring a microcontroller to continuously monitor the system. Combined with programmable sampling intervals, low power consumption, and 1.8-V supply voltage support, the is designed for ultra-low power battery-operated systems.
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技術文件

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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 HDC2021 High-Accuracy, Low-Power Humidity and Temperature Sensor datasheet (Rev. A) 2020/6/26
應用說明 How to Use the Integrated Heater to Mitigate RH Drift PDF | HTML 2026/5/1
Product overview Humidity Sensor Comparison Guide PDF | HTML 2026/1/2
應用說明 TI Humidity Sensors: Programming & Integration Guide PDF | HTML 2025/11/3
應用說明 How to Debug RH Accuracy Issues in RH Sensors PDF | HTML 2025/10/30
Application brief Using RH to Derive Vapor Pressure, Dew Point, Absolute Humidity, and Enthalpy PDF | HTML 2023/2/9
白皮書 85°C/85% RH Accelerated Life Test Impact on Humidity Sensors (Rev. A) PDF | HTML 2021/9/7
技術文章 Why long-term consistent performance matters for relative humidity sensors PDF | HTML 2021/6/21
應用說明 Is a Protective Cover Needed for Humidity Sensors? PDF | HTML 2021/4/21
技術文章 How accurate sensing in HVAC systems improves efficiency and saves consumers money PDF | HTML 2021/1/26
使用指南 HDC20XX Silicon User's Guide PDF | HTML 2020/11/30
技術文章 Interface to sensors in seconds with ASC Studio PDF | HTML 2020/11/12
應用說明 Programming the HDC20X0 Devices 2018/8/29
應用說明 Humidity Sensor: Storage and Handling Guidelines 2017/8/28
應用說明 Optimizing Placement and Routing for Humidity Sensors (Rev. A) 2017/3/6

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開發板

HDC2080EVM — HDC2080 低功耗濕度和溫度感測器評估模組

HDC2080EVM 評估模組 是一個易於使用、即插即用的平台，用於評估 HDC2080 濕度和溫度感測器的功能與性能。  EVM 利用具有 MSP430F5528 微控制器的 USB 介面，在 HDC2080 裝置與 PC GUI 軟體之間建立通訊。  隨附軟體 OneUI 可提供使用者互動與控制，並以圖形方式記錄串流資料的溫度與濕度。GUI 也允許存取 HDC2080 的配置暫存器。  MSP430F5528 提供 I2C 介面，將來自 PC 的通訊橋接至內建的 HDC2080 裝置。  PCB 包括一個帶有穿孔的邊緣，允許將感測器部分從主 PCB (...)
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