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ADS8688W

現行

16 位元、500 kSPS、八通道、單電源供電 SAR ADC，具 ±12V 差分輸入

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產品規格表

ADS8688W

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 16 Sample rate (max) (ksps) 500 Number of input channels 8 Interface type SPI Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10.24 Input voltage range (min) (V) -10.24 Features Daisy-Chainable, Oscillator, Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 65 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 85 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.25
Resolution (Bits) 16 Sample rate (max) (ksps) 500 Number of input channels 8 Interface type SPI Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10.24 Input voltage range (min) (V) -10.24 Features Daisy-Chainable, Oscillator, Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 65 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 85 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.25
— (—) — See data sheet
  • 16-Bit ADCs with Integrated Analog Front-End
  • 4-, 8-Channel MUX with Auto and Manual Scan
  • Channel-Independent Programmable Inputs:
    • ±12.288V, ±6.144V, and ±3.072V
    • 12.288V to 0V and 6.144V to 0V
  • 5V Analog Supply: 1.65V to 5V I/O Supply
  • Constant Resistive Input Impedance: 1.2MΩ
  • Input Overvoltage Protection: Up to ±20V
  • On-Chip, 4.096V Reference with Low Drift
  • Excellent Performance:
    • 500kSPS Aggregate Throughput
    • DNL: ±0.6LSB; INL: ±0.8LSB
    • Low Drift for Gain Error and Offset
    • SNR: 91.5dB; THD: –102dB
    • Low Power: 65mW
  • AUX Input → Direct Connection to ADC Inputs
  • ALARM → High and Low Thresholds per Channel
  • SPI™-Compatible Interface with Daisy-Chain
  • Industrial Temperature Range: –40°C to 125°C
  • 16-Bit ADCs with Integrated Analog Front-End
  • 4-, 8-Channel MUX with Auto and Manual Scan
  • Channel-Independent Programmable Inputs:
    • ±12.288V, ±6.144V, and ±3.072V
    • 12.288V to 0V and 6.144V to 0V
  • 5V Analog Supply: 1.65V to 5V I/O Supply
  • Constant Resistive Input Impedance: 1.2MΩ
  • Input Overvoltage Protection: Up to ±20V
  • On-Chip, 4.096V Reference with Low Drift
  • Excellent Performance:
    • 500kSPS Aggregate Throughput
    • DNL: ±0.6LSB; INL: ±0.8LSB
    • Low Drift for Gain Error and Offset
    • SNR: 91.5dB; THD: –102dB
    • Low Power: 65mW
  • AUX Input → Direct Connection to ADC Inputs
  • ALARM → High and Low Thresholds per Channel
  • SPI™-Compatible Interface with Daisy-Chain
  • Industrial Temperature Range: –40°C to 125°C

The ADS8684W and ADS8688W are 4-channel and 8-channel, integrated data acquisition systems based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20V, a 4-channel or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096V reference with low temperature drift. Operating on a single 5V analog supply, each input channel on the devices can independently support bipolar input ranges of ±12.288V, ±6.144V, and ±3.072V and unipolar input ranges of 12.288V to 0V and 6.144V to 0V.

The ADS8684W and ADS8688W offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65V to 5.25V, enabling direct interface to a wide range of host controllers.

The ADS8684W and ADS8688W are 4-channel and 8-channel, integrated data acquisition systems based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC), operating at a throughput of 500kSPS. The devices feature integrated analog front-end circuitry for each input channel with overvoltage protection up to ±20V, a 4-channel or 8-channel multiplexer with automatic and manual scanning modes, and an on-chip, 4.096V reference with low temperature drift. Operating on a single 5V analog supply, each input channel on the devices can independently support bipolar input ranges of ±12.288V, ±6.144V, and ±3.072V and unipolar input ranges of 12.288V to 0V and 6.144V to 0V.

The ADS8684W and ADS8688W offer a simple SPI-compatible serial interface to the digital host and also support daisy-chaining of multiple devices. The digital supply operates from 1.65V to 5.25V, enabling direct interface to a wide range of host controllers.
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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 ADS868xW 16 -Bit, 500 kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs With Bipolar Input Ranges datasheet (Rev. A) PDF | HTML 2026/6/16
Circuit design High common-mode differential input voltage to ±10-V ADC input circuit (Rev. A) PDF | HTML 2024/9/24
Circuit design Reducing effects of external RC filter circuit on gain and drift error (Rev. B) PDF | HTML 2024/9/19
Circuit design Circuit to increase input range on an integrated analog front end (AFE) SAR ADC (Rev. B) PDF | HTML 2024/9/12
Circuit design Input Protection for High-Voltage ADC Circuit with TVS Diode (Rev. A) PDF | HTML 2023/5/2
Product overview PLC Analog Input Front-End Architectures PDF | HTML 2022/7/31
應用說明 EMC Compliance Testing for Precision ADC Systems (Rev. A) PDF | HTML 2022/5/27
應用說明 Circuit for detecting input floating on ADS8681 ADC PDF | HTML 2021/3/31
應用說明 Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 2021/1/11
Circuit design Circuit for protecting ADC with TVS diode and PTC fuse PDF | HTML 2020/8/3
應用說明 Extending Input Voltage Range and Understanding Associated Errors for ADC With I 2018/11/9
技術文章 Improving sensor DAQ performance using the PRU-ICSS for grid protection and contro PDF | HTML 2018/10/9
技術文章 Interfacing multiple ADCs to a single processor for grid protection and control PDF | HTML 2018/9/13
技術文章 Analog interfacing for grid infrastructure with Sitara processors PDF | HTML 2018/2/15
白皮書 Voltage-reference impact on total harmonic distortion 2016/8/1
更多文件說明 SAR ADCs for PLC Applications PDF | HTML 2016/2/11
使用指南 Phase-Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation (Rev. B) 2015/3/12

設計與開發

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開發板

BOOSTXL-ADS8688W — ADS8688W BoosterPack™ 插入式模組

ADS8688W BoosterPack™ 外掛程式模組 (BOOSTXL-ADS8688W) 提供具成本效益且可存取的平台，以使用 ADS8688W 開發應用程式。此模組與 LP-MSPM0G3507 LaunchPad™ 評估套件相容，並且包含可支援搭配其他控制器使用的接頭。提供示範基本裝置功能的範例程式碼，可作為應用程式開發的開放起點。
使用指南: PDF | HTML
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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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