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類比轉數位轉換器 (ADC)
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ADS1220

現行

具 PGA、VREF、SPI 和兩個 IDAC 的 24 位元、2-kSPS、4 通道、低功耗 delta-sigma 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 ADS122S14 現行 具有 PGA、VREF、2 個 IDAC 和 SPI 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

ADS1220

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 SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal, Supply 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, 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 SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal, Supply 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, 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
VQFN (RVA) 16 12.25 mm² (3.5 mm × 3.5 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • Low current consumption:
    • As low as 120µA (typ) in duty-cycle mode
  • Wide supply range: 2.3V to 5.5V
  • Programmable gain: 1 to 128
  • Programmable data rates: Up to 2kSPS
  • Up to 20 Bits effective resolution
  • Simultaneous 50Hz and 60Hz rejection at 20SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources:
    • 10µA to 1.5mA
  • Internal 2.048V reference: 5ppm/°C (typ) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor:
    • 0.5°C (typ) accuracy
  • SPI-compatible interface (mode 1)
  • Low current consumption:
    • As low as 120µA (typ) in duty-cycle mode
  • Wide supply range: 2.3V to 5.5V
  • Programmable gain: 1 to 128
  • Programmable data rates: Up to 2kSPS
  • Up to 20 Bits effective resolution
  • Simultaneous 50Hz and 60Hz rejection at 20SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources:
    • 10µA to 1.5mA
  • Internal 2.048V reference: 5ppm/°C (typ) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor:
    • 0.5°C (typ) accuracy
  • SPI-compatible interface (mode 1)

The ADS1220 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, a low-side switch, 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 20SPS, the digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS1220 designed for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4, allowing for single-ended measurements.

Power consumption is as low as 120µA when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.

The ADS1220 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, a low-side switch, 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 20SPS, the digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS1220 designed for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4, allowing for single-ended measurements.

Power consumption is as low as 120µA when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a leadless VQFN-16 or a TSSOP-16 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 ADS1220 4-Channel, 2kSPS, Low-Power, 24-Bit ADC With Integrated PGA and Reference datasheet (Rev. D) PDF | HTML 2026/5/18
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 QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023/12/6
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
技術文章 Designing signal chains for portable diagnostics PDF | HTML 2022/5/18
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 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
技術文章 The real secret to become a better cook. Integrate smart scale technology in kitch PDF | HTML 2016/10/25
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

ADS1220EVM — ADS1220 評估模組

The ADS1220EVM is an evaluation system for the ADS1220, a 24-bit, multi-channel, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The EVM uses the ADS1220 along with minimal circuitry to demonstrate functionality for prototyping and part evaluation. The pins of the ADS1220 are (...)

使用指南: PDF
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開發板

PLABS-SAR-EVM-PDK — TI Precision Labs SAR ADC 評估模組性能展示套件 (PDK)

PLABS-SAR-EVM-PDK 是一款實驗平台，需與 TI Precision Labs 影片配合使用，可幫助深入理解 漸近法暫存器 (SAR) 類比轉數位轉換器 (ADC) 電路。此評估模組 (EVM) 平台包含兩個通道的常見 SAR ADC 電路，可輕鬆連接至精密訊號注入器評估模組 (PSIEVM)，該模組能提供低失真、低雜訊的輸入訊號來驅動 SAR ADC；第三個通道則設計用於展示超低功耗 ADC 在不同吞吐量下的功耗變化。該 EVM 平台還包含 10 塊可安裝於主機板上的試樣卡，用於展示不同前端驅動電路對性能的影響。

PLABS-SAR-EVM-PDK 使用者指南提供了 EVM (...)

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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

ADS1220-C-EXAMPLE-CODE — ADS1220 Example Code

Expedite your embedded design using this example C code for the ADS1220 product family
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模擬型號

ADS1220 IBIS Model (Rev. A)

SBAM171A.ZIP (82 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

ADS1220-EXCEL-CALC — ADS1220 Excel™ calculator

The ADS1220 Excel™ calculator provides several easy-to-use tools for understanding the ADS1220 operation and accelerating time to market.
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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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許多 TI 參考設計包含 ADS1220

使用我們的參考設計選擇工具，以檢視並找出最適合您的應用和參數的設計。
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RVA) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
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