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ADS122C04

現行

具 PGA、VREF、2 個 IDAC 和 I2C 介面的 24 位元、2-kSPS、4 通道、低功耗小尺寸 ΔΣ ADC

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產品規格表

現在提供此產品的更新版本

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。
最新 ADS122C14 現行 具有 PGA、VREF、2 個 IDAC 和 I²C 的 8 通道 24 位元 64kSPS ΔΣ ADC Increased sampling rate up to 64-kSPS with improved performance and more channels (8) in a smaller package

ADS122C04

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 24 Sample rate (max) (ksps) 2 Number of input channels 4 Interface type I2C Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.85, 5.6 Input voltage range (min) (V) -2.85, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Small Size, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.4 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.3 Digital supply (max) (V) 5.5
Resolution (Bits) 24 Sample rate (max) (ksps) 2 Number of input channels 4 Interface type I2C Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.85, 5.6 Input voltage range (min) (V) -2.85, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Small Size, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 1.4 Analog supply voltage (min) (V) 2.3 Analog supply voltage (max) (V) 5.5 Digital supply (min) (V) 2.3 Digital supply (max) (V) 5.5
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) WQFN (RTE) 16 9 mm² (3 mm × 3 mm)
  • Current Consumption as Low as 315 µA (typ)
  • Wide Supply Range: 2.3 V to 5.5 V
  • Programmable Gain: 1 to 128
  • Programmable Data Rates: Up to 2 kSPS
  • Up to 20 Bits Effective Resolution
  • Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS With Single-Cycle Settling Digital Filter
  • Two Differential or Four Single-Ended Inputs
  • Dual-Matched Programmable Current Sources:
    10 µA to 1.5 mA
  • Internal 2.048-V Reference: 5 ppm/°C (typ) Drift
  • Internal 2% Accurate Oscillator
  • Internal Temperature Sensor:
    0.5°C (typ) Accuracy
  • I2C-Compatible Interface
  • Supported I2C Bus Speed Modes:
    Standard-Mode, Fast-Mode, Fast-Mode Plus
  • 16 Pin-Configurable I2C Addresses
  • Package: 3.0-mm × 3.0-mm × 0.75-mm WQFN
  • Current Consumption as Low as 315 µA (typ)
  • Wide Supply Range: 2.3 V to 5.5 V
  • Programmable Gain: 1 to 128
  • Programmable Data Rates: Up to 2 kSPS
  • Up to 20 Bits Effective Resolution
  • Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS With Single-Cycle Settling Digital Filter
  • Two Differential or Four Single-Ended Inputs
  • Dual-Matched Programmable Current Sources:
    10 µA to 1.5 mA
  • Internal 2.048-V Reference: 5 ppm/°C (typ) Drift
  • Internal 2% Accurate Oscillator
  • Internal Temperature Sensor:
    0.5°C (typ) Accuracy
  • I2C-Compatible Interface
  • Supported I2C Bus Speed Modes:
    Standard-Mode, Fast-Mode, Fast-Mode Plus
  • 16 Pin-Configurable I2C Addresses
  • Package: 3.0-mm × 3.0-mm × 0.75-mm WQFN

The ADS122C04 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS122C04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.

The ADS122C04 features a 2-wire, I2C-compatible interface that supports I2C bus speeds up to 1 Mbps. Two address pins allow selection of 16 different I2C addresses for the device.

The ADS122C04 is offered in a leadless 16-pin WQFN or a 16-pin TSSOP package and is specified over a temperature range of –40°C to +125°C.

The ADS122C04 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS122C04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.

The ADS122C04 features a 2-wire, I2C-compatible interface that supports I2C bus speeds up to 1 Mbps. Two address pins allow selection of 16 different I2C addresses for the device.

The ADS122C04 is offered in a leadless 16-pin WQFN or a 16-pin TSSOP package and is specified over a temperature range of –40°C to +125°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 ADS122C04 24-Bit, 4-Channel, 2-kSPS, Delta-Sigma ADC With I2C Interface datasheet (Rev. B) PDF | HTML 2018/10/19
應用說明 A Simple, Java-Based CRC Calculator PDF | HTML 2026/3/4
應用說明 K-type thermocouple measurement circuit with precision ADC (Rev. A) PDF | HTML 2024/9/20
應用說明 Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 2024/3/18
應用說明 A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 2024/3/13
應用說明 A Basic Guide to RTD Measurements (Rev. A) PDF | HTML 2023/3/29
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29
應用說明 A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 2023/3/29
應用說明 RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 (Rev. A) PDF | HTML 2023/3/27
應用說明 ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. B) 2021/9/9
應用說明 Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) PDF | HTML 2021/8/23
應用說明 RTD Wire-Break Detection Using Precision Delta-Sigma ADCs PDF | HTML 2021/2/18
電子書 Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020/6/19
Application brief Low-Cost, Single-Chip, Diff Temp Measurement Solution Using Delta-Sigma ADCs (Rev. A) 2018/5/4
Application brief Thermocouple Temperature Measurements Using Isolated Amplifiers (Rev. A) 2017/8/11
Application brief Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A) 2017/6/15
白皮書 Fully integrated signal and power isolation – applications and benefits 2017/2/10
電子書 Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015/3/19

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

ADS122C04EVM — ADS122C04 評估模組

ADS122C04 評估模組 (EVM) 是用於評估 ADS122C04 類比轉數位轉換器 (ADC) 的平台。ADS122C04 為一配備 I2C 介面的 24 位元，2kSPS，4 通道，低功耗 ΔΣ ADC，適用於感測器量測和製程控制應用。ADS122C04 也包括整合式振盪器、參考及使用 PGA 精準測量廣泛的輸入訊號。使用 ADS122C04EVM 和 ΔΣ ADC EvaluaTIon 軟體 (DELTASIGMAEVAL-GUI) 以縮短原型開發時間，加快產品上市速度。

使用指南: PDF
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應用軟體及架構

ADC-TEMP-SENSOR-FW — Temperature-sensor firmware source files

這款溫度感測器線性化韌體提供軟體常式來測量和線性化最常用的溫度感測器，包括電阻溫度偵測器 (RTD)、熱電偶、熱敏電阻 (NTC、PTC 等) 與類比溫度感測器。

此軟體包含類比轉數位轉換器 (ADC) 硬體抽象層，可在 ADC 與微處理器 (MCU) 之間進行通訊，並且可將感測器資料轉換並線性化為溫度值的感測器 API，以及展示如何藉由原始碼來使用感測器 (精確 ADC 及 MCU) 讀取溫度的範例。

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支援軟體

ADS122C04-C-EXAMPLE-CODE — ADS122C04 example C code

Expedite your embedded design using this example C code for the ADS122C04 product family
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模擬型號

ADS122C04 IBIS Model

SBAM329.ZIP (37 KB) - IBIS 模型
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計算工具

ADC-RTD-CONFIG-CALC — RTD Configuration Calculator for Precision ADCs

此電阻溫度偵測器 (RTD) 配置計算機是一套 Microsoft® Excel 工具，可協助使用者為 RTD 應用找出系統解決方案。預設顯示兩線、三線及四線 RTD 配置，並配備適用三線 RTD 的高側或低側參考電阻，及一或兩個整合式數位轉類比轉換器 (IDAC) 電流來源的選項。

此外，計算機支援各種 RTD 類型和精確類比轉數位轉換器 (ADC)。使用此計算器為每個組態選擇參考及偏壓電阻值、IDAC 電流及增益設定。此外，計算機也提供全誤差的一階近似，以幫助使用者找出系統中最大的誤差來源。

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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-01526 — 適用於熱能和冷能電表的高精密度溫度測量參考設計

此參考設計使用 24 位元、低功耗、delta-sigma ADC，實作高精密度差分溫度量測 (DTM) 子系統。熱能和冷能電表 DTM 子系統通常使用 PT100、PT500 或 PT1000 等兩個 2 或 4 線電阻溫度偵測器 (RTD)，並可在 3°C 至 180°C 的水溫範圍內實現 10 mK 的差分溫度量測準確度。TIDA-01526 採用單晶片、符合成本效益的 DTM 系統，可與 TI 的超音波或旋轉偵測流量測子系統結合，以提供完整的熱能或冷能電表解決方案。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 16 Ultra Librarian
WQFN (RTE) 16 Ultra Librarian
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