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ADS131E08S

現行

具快速啓動功能且適用監控和保護的 24 位元 64-kSPS 8 通道同步 ΔΣ ADC

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產品規格表

ADS131E08S

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 24 Sample rate (max) (ksps) 64 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential, Pseudo-Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode Internal Input voltage range (max) (V) 4 Input voltage range (min) (V) 0 Features Daisy-Chainable, GPIO, Oscillator, PGA Operating temperature range (°C) -40 to 105 Power consumption (typ) (mW) 2 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 108 Digital supply (min) (V) 1.7 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 64 Number of input channels 8 Interface type SPI Architecture Delta-Sigma Input type Differential, Pseudo-Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode Internal Input voltage range (max) (V) 4 Input voltage range (min) (V) 0 Features Daisy-Chainable, GPIO, Oscillator, PGA Operating temperature range (°C) -40 to 105 Power consumption (typ) (mW) 2 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.25 SNR (dB) 108 Digital supply (min) (V) 1.7 Digital supply (max) (V) 3.6
TQFP (PAG) 64 144 mm² (12 mm × 12 mm)
  • Power-up time: 3 ms
  • Eight differential simultaneous sampling inputs
  • High performance:
    • Dynamic range at 1 kSPS: 118 dB
    • Crosstalk: –125 dB
    • THD: –100 dB at 50 Hz and 60 Hz
  • Low power consumption: 2 mW/channel
  • Data rates: 1, 2, 4, 8, 16, 32, and 64 kSPS
  • Gain options: 1, 2, 4, 8, and 12
  • Internal voltage reference: 8 ppm/°C Drift
  • Supply range:
    • Analog:
      • 2.7 V to 5.25 V (unipolar)
      • ±2.5 V (bipolar)
    • Digital: 1.7 V to 3.6 V
  • Fault detection and device self-testing capability
  • SPI™-compatible data interface and four GPIOs
  • Package: 64-pin TQFP
  • Operating temperature range: –40°C to +105°C
  • Power-up time: 3 ms
  • Eight differential simultaneous sampling inputs
  • High performance:
    • Dynamic range at 1 kSPS: 118 dB
    • Crosstalk: –125 dB
    • THD: –100 dB at 50 Hz and 60 Hz
  • Low power consumption: 2 mW/channel
  • Data rates: 1, 2, 4, 8, 16, 32, and 64 kSPS
  • Gain options: 1, 2, 4, 8, and 12
  • Internal voltage reference: 8 ppm/°C Drift
  • Supply range:
    • Analog:
      • 2.7 V to 5.25 V (unipolar)
      • ±2.5 V (bipolar)
    • Digital: 1.7 V to 3.6 V
  • Fault detection and device self-testing capability
  • SPI™-compatible data interface and four GPIOs
  • Package: 64-pin TQFP
  • Operating temperature range: –40°C to +105°C

The ADS131E08S is a multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with built-in programmable gain amplifiers (PGAs), an internal reference, and an internal oscillator. The ADC wide dynamic range, scalable data rates, and internal fault detect monitors make the ADS131E08S very attractive in industrial power monitoring, control, and protection applications. Fast power-up time allows data to be available within 3 ms of power being applied to the device for line-powered power applications. True high-impedance inputs enable the ADS131E08S to directly interface with a resistor-divider network or a voltage transformer to measure line voltage, or a current transformer or Rogowski coil to measure line current. With high integration levels and exceptional performance, the ADS131E08S enables the creation of scalable industrial power systems at a significantly reduced size, power, and overall cost.

The ADS131E08S has an individual input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and fault detection. Fault detection can be implemented internal to the device, using the integrated comparators with digital-to-analog converter (DAC)-controlled trigger levels. The ADS131E08S can operate at data rates as high as 64 kSPS.

The complete analog front-end (AFE) solution is available in a 64-pin TQFP package and is specified over the industrial temperature range of –40°C to +105°C.

The ADS131E08S is a multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with built-in programmable gain amplifiers (PGAs), an internal reference, and an internal oscillator. The ADC wide dynamic range, scalable data rates, and internal fault detect monitors make the ADS131E08S very attractive in industrial power monitoring, control, and protection applications. Fast power-up time allows data to be available within 3 ms of power being applied to the device for line-powered power applications. True high-impedance inputs enable the ADS131E08S to directly interface with a resistor-divider network or a voltage transformer to measure line voltage, or a current transformer or Rogowski coil to measure line current. With high integration levels and exceptional performance, the ADS131E08S enables the creation of scalable industrial power systems at a significantly reduced size, power, and overall cost.

The ADS131E08S has an individual input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and fault detection. Fault detection can be implemented internal to the device, using the integrated comparators with digital-to-analog converter (DAC)-controlled trigger levels. The ADS131E08S can operate at data rates as high as 64 kSPS.

The complete analog front-end (AFE) solution is available in a 64-pin TQFP package and is specified over the industrial temperature range of –40°C to +105°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 ADS131E08S Eight-Channel, 24-Bit, Analog Front-End With Fast Power-Up Time datasheet (Rev. B) PDF | HTML 2020/4/6
應用說明 A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 2024/3/13
應用說明 Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 2023/3/29
電子書 Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020/6/19
技術文章 What’s the big deal about circuit breakers? PDF | HTML 2017/8/1

設計與開發

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開發板

ADS131E08EVM-PDK — ADS131E08V2EVM-PDK 評估模組

ADS131E08EVM-PDK 為 ADS131E08 的示範套件，ADS131E08 是同步採樣、24 位元、ΔΣ (Δ Σ) 類比數位轉換器 (ADC)，內建可編程增益放大器 (PGA)、內部參考和板上振盪器。ADS131E08 包含工業電源監控和控制所需的常用功能，但可彈性滿足需要八通道、24 位元 ADC 的各種應用。ADS131E08EVM-PDK 展示套件設計用於加速評估和系統開發。

 

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模擬型號

ADS131E08 IBIS Model

SBAM160.ZIP (141 KB) - IBIS 模型
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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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參考設計

TIDA-00661 — 適用於空氣斷路器的高解析度、快速啟動類比前端參考設計

TIDA-00661 參考設計具備訊號處理前端子系統，適用於空氣斷路器 (ACB) 或模製外殼斷路器 (MCCB) 中使用的電子跳脫裝置 (ETU)。此子系統由具有 24 位元解析度和快速啟動 (< 3ms)、±2.5V 穩壓器、FRAM 架構微控制器 (MCU) 的 Delta-Sigma ADC 組成，用於介接 ADC 和處理輸入。子系統的設計用途為啟動、計算全週期 RMS 電流、做出決策，並在 30 ms 內為電磁閥提供跳脫訊號。

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參考設計

TIDA-00835 — 採用 24 位元 Delta-Sigma ADC 的高準確度 ±0.5% 電流和隔離式電壓量測參考設計

TIDA-00835 參考設計採用雙極輸入配置，結合具有四通道、24 位元同時取樣差動輸入的 ΔΣ ADC，在寬動態範圍內進行精確的電壓和電流測量。配置 ADC 來測量 ±2.5V 雙極輸入。  使用固定增益放大器，將輸入調整至 ±2.5V 的 ADC 測量範圍。此 AFE 使用通用外部時脈將兩個 ADC 串接在一起，將輸入通道數量擴充至八個，並同時取樣所有輸入通道。每個模組擁有更多測量通道，可降低整體系統成本。

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