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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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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，但引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
TSSOP (PW) 16 32 mm² 5 x 6.4 VQFN (RVA) 16 12.25 mm² 3.5 x 3.5
  • Low Current Consumption:
    As Low as 120 µA (typ) in Duty-Cycle Mode
  • Wide Supply Range: 2.3 V to 5.5 V
  • Programmable Gain: 1 V/V to 128 V/V
  • 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
  • SPI-Compatible Interface (Mode 1)
  • Package: 3.5-mm × 3.5-mm × 0.9-mm VQFN
  • Low Current Consumption:
    As Low as 120 µA (typ) in Duty-Cycle Mode
  • Wide Supply Range: 2.3 V to 5.5 V
  • Programmable Gain: 1 V/V to 128 V/V
  • 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
  • SPI-Compatible Interface (Mode 1)
  • Package: 3.5-mm × 3.5-mm × 0.9-mm VQFN

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 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 V/V. This PGA makes the ADS1220 ideally-suited 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 V/V, allowing for single-ended measurements.

Power consumption is as low as 120 µA 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 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 V/V. This PGA makes the ADS1220 ideally-suited 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 V/V, allowing for single-ended measurements.

Power consumption is as low as 120 µA 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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ADS1120 現行 具 PGA、VREF、2 個 IDAC 和 SPI 介面的 16 位元、2-kSPS、4 通道、低功耗小尺寸 ΔΣ ADC Reduced resolution (16 bit)

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重要文件 類型 標題 格式選項 日期
* Data sheet ADS1220 4-Channel, 2-kSPS, Low-Power, 24-Bit ADC with Integrated PGA and Reference datasheet (Rev. C) PDF | HTML 2016年 8月 19日
Application note K-type thermocouple measurement circuit with precision ADC (Rev. A) PDF | HTML 2024年 9月 20日
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 2024年 3月 18日
Application note A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 2024年 3月 13日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6日
Application note A Basic Guide to RTD Measurements (Rev. A) PDF | HTML 2023年 3月 29日
Application note A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 2023年 3月 29日
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023年 3月 29日
Application note RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 (Rev. A) PDF | HTML 2023年 3月 27日
Technical article Designing signal chains for portable diagnostics PDF | HTML 2022年 5月 18日
Application note ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. B) 2021年 9月 9日
Application note RTD Wire-Break Detection Using Precision Delta-Sigma ADCs PDF | HTML 2021年 2月 18日
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020年 6月 19日
Application brief Low-Cost, Single-Chip, Diff Temp Measurement Solution Using Delta-Sigma ADCs (Rev. A) 2018年 5月 4日
Application brief Thermocouple Temperature Measurements Using Isolated Amplifiers (Rev. A) 2017年 8月 11日
Application brief Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A) 2017年 6月 15日
White paper Fully integrated signal and power isolation – applications and benefits 2017年 2月 10日
Technical article The real secret to become a better cook. Integrate smart scale technology in kitch PDF | HTML 2016年 10月 25日
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 2015年 3月 19日

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 (...)

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

This temperature-sensor linearization firmware provides a software routine for measuring and linearizing most common temperature sensors, including resistance temperature detectors (RTDs), thermocouples, thermistors (NTC, PTC, etc.) and analog temperature sensors.

This software includes an (...)

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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 Model
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計算工具

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

This resistance temperature detector (RTD) configuration calculator is a Microsoft® Excel-based tool that helps the user identify a system solution for an RTD application. Two-, three- and four-wire RTD configurations are shown by default, with options for a high-side or low-side reference (...)

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ADS1220-EXCEL-CALC — ADS1220 Excel™ calculator

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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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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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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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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。

檢視參考設計
封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 16 Ultra Librarian
VQFN (RVA) 16 Ultra Librarian
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