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ADS112U04

現行

具有 PGA、VREF、2 個 IDAC 和 UART 介面的 16 位元、2-kSPS、4 通道、低功耗小尺寸 delta-sigma ADC

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產品規格表

ADS112U04

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 16 Sample rate (max) (ksps) 2 Number of input channels 4 Interface type UART 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), GPIO, 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) 16 Sample rate (max) (ksps) 2 Number of input channels 4 Interface type UART 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), GPIO, 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 x 6.4 WQFN (RTE) 16 9 mm² 3 x 3
  • 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
  • 16-Bit, Noise-Free Resolution at 20 SPS
  • 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
  • Three General-Purpose Inputs/Outputs
  • 2-Wire UART Compatible Interface (8-N-1 Format) With Baud Rates up to 120 kBaud and
    Auto-Baud-Rate Detection
  • 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
  • 16-Bit, Noise-Free Resolution at 20 SPS
  • 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
  • Three General-Purpose Inputs/Outputs
  • 2-Wire UART Compatible Interface (8-N-1 Format) With Baud Rates up to 120 kBaud and
    Auto-Baud-Rate Detection
  • Package: 3.0-mm × 3.0-mm × 0.75-mm WQFN

The ADS112U04 is a precision, 16-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 ADS112U04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.

The ADS112U04 features a 2-wire, UART-compatible interface. In applications that require galvanic isolation this universal asynchronous receiver/transmitter (UART) interface minimizes the number of digital isolation channels, thus saving cost, board space, and power.

The ADS112U04 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 ADS112U04 is a precision, 16-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 ADS112U04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.

The ADS112U04 features a 2-wire, UART-compatible interface. In applications that require galvanic isolation this universal asynchronous receiver/transmitter (UART) interface minimizes the number of digital isolation channels, thus saving cost, board space, and power.

The ADS112U04 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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ADS112C04 現行 具 PGA、VREF、2 個 IDAC 和 I2C 介面的 16 位元、2-kSPS、4 通道、低功耗小尺寸 ΔΣ ADC Has I2C interface

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重要文件 類型 標題 格式選項 日期
* Data sheet ADS112U04 16-Bit, 4-Channel, 2-kSPS, Delta-Sigma ADC With UART Interface datasheet (Rev. A) PDF | HTML 2018年 10月 25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 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 ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. B) 2021年 9月 9日
Application note Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) PDF | HTML 2021年 8月 23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 Reducing System Cost, Size and Power in Isolated DAQ Systems Using ADS122U04 (Rev. A) 2017年 6月 15日
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 2016年 9月 19日
Analog Design Journal How delta-sigma ADCs work, Part 2 2011年 11月 9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

ADS112U04EVM — ADS112U04 評估模組

ADS112U04 評估模組 (EVM) 是用於評估 ADS112U04 類比轉數位轉換器 (ADC) 的平台。ADS112U04 為一配備 UART 介面的 16 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。ADS112U04 也包括整合式振盪器、參考與 PGA，可精準測量廣泛的輸入訊號。使用 ADS112U04EVM 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

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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ADS122U04-C-EXAMPLE-CODE — ADS122U04 example C code

Expedite your embedded design using this example C code for the ADS122U04 product family
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模擬型號

ADS112U04 IBIS Model

SBAM348.ZIP (92 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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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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模擬工具

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 (...)
使用指南: PDF
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參考設計

TIDA-010019 — 溫度感測器中適用於冷接點補償參考設計的 RTD 更換

使用熱電偶 (TC) 的溫度感測應用需要準確的本機溫度感測器來實現高準確度。此參考設計強調並說明例如冷接點補償 (CJC) 或包含超低功耗 TC 類比前端等設計挑戰的解決方案。關於功耗和準確度方面的性能，針對準確的 4 到 20mA 的感測器已進行最佳化，同時也展示了不同 CJC 和 TC 前端實作的性能。
Design guide: PDF
電路圖: PDF
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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