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ADS8686S

現行

具有整合式類比前端 (AFE) 的 16 通道 16 位元 1-MSPS 雙同時取樣 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 ADS9324 現行 具有整合式類比前端 (AFE) 的 16 通道 16 位元 1MSPS 同時取樣 SAR ADC Full simultaneous sampling, higher sample rate (1-MSPS), larger input voltage range

ADS8686S

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 16 Sample rate (max) (ksps) 1000 Number of input channels 16 Interface type Byte-Wide, Parallel, SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed, Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10 Input voltage range (min) (V) -10 Features Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 296.98 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 91.9 Digital supply (min) (V) 1.71 Digital supply (max) (V) 5.25
Resolution (Bits) 16 Sample rate (max) (ksps) 1000 Number of input channels 16 Interface type Byte-Wide, Parallel, SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed, Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 10 Input voltage range (min) (V) -10 Features Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 296.98 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 91.9 Digital supply (min) (V) 1.71 Digital supply (max) (V) 5.25
LQFP (PZA) 80 256 mm² 16 x 16
  • 16-channel, 16-bit ADC with integrated analog front-end
  • Dual simultaneous sampling: 8x2 channels
  • Supply:
    • Analog: 5 V
    • Digital: 1.8 V to 5 V
  • Constant 1-MΩ input impedance front-end
  • Independently programmable input ranges with 20% overrange
  • Programmable low-pass filter:
    • 15 kHz, 39 kHz, 376 kHz
  • Excellent DC and AC performance
  • On-chip reference and reference buffer
  • Excellent over temperature performance
  • Overvoltage input clamp with 8-kV ESD
  • Optional cyclic redundancy check (CRC) error checking
  • On-chip self diagnostic function
  • Temperature range: –40°C to +125°C
  • 16-channel, 16-bit ADC with integrated analog front-end
  • Dual simultaneous sampling: 8x2 channels
  • Supply:
    • Analog: 5 V
    • Digital: 1.8 V to 5 V
  • Constant 1-MΩ input impedance front-end
  • Independently programmable input ranges with 20% overrange
  • Programmable low-pass filter:
    • 15 kHz, 39 kHz, 376 kHz
  • Excellent DC and AC performance
  • On-chip reference and reference buffer
  • Excellent over temperature performance
  • Overvoltage input clamp with 8-kV ESD
  • Optional cyclic redundancy check (CRC) error checking
  • On-chip self diagnostic function
  • Temperature range: –40°C to +125°C

The ADS8686S is a 16-channel data acquisition (DAQ) system based on a dual simultaneous-sampling, 16-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS8686S features a complete analog front-end for each channel with an input clamp, 1-MΩ input impedance, independently programmable gain amplifier (PGA), programmable low-pass filter, and an ADC input driver. The device also features a low-drift, precision reference with a buffer to drive the ADCs. A flexible digital interface supporting serial, parallel, and byte communication enables the device to be used with a variety of host controllers.

The ADS8686S can be configured to accept ±10-V, ±5-V, or ±2.5-V bipolar inputs with a 20% overrange option using a single 5-V supply. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. The ADS8686S has a highly configurable channel sequencer to reduce the sequencing overhead on the backend controller or processor. The high performance and accuracy, along with zero-latency conversions offered by this device make the ADS8686S a great choice for multiple industrial applications.

The ADS8686S is a 16-channel data acquisition (DAQ) system based on a dual simultaneous-sampling, 16-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS8686S features a complete analog front-end for each channel with an input clamp, 1-MΩ input impedance, independently programmable gain amplifier (PGA), programmable low-pass filter, and an ADC input driver. The device also features a low-drift, precision reference with a buffer to drive the ADCs. A flexible digital interface supporting serial, parallel, and byte communication enables the device to be used with a variety of host controllers.

The ADS8686S can be configured to accept ±10-V, ±5-V, or ±2.5-V bipolar inputs with a 20% overrange option using a single 5-V supply. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. The ADS8686S has a highly configurable channel sequencer to reduce the sequencing overhead on the backend controller or processor. The high performance and accuracy, along with zero-latency conversions offered by this device make the ADS8686S a great choice for multiple industrial applications.
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技術文件

star =TI 所選的此產品重要文件
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重要文件 類型 標題 格式選項 日期
* Data sheet ADS8686S 16-Channel, 16-Bit, 1-MSPS, Dual, Simultaneous-Sampling ADC With Integrated Analog Front-End datasheet (Rev. C) PDF | HTML 2020年 7月 24日
Application note EMC Compliance Testing for Precision ADC Systems (Rev. A) PDF | HTML 2022年 5月 27日
Application note Expanding Analog Input Channels in Grid Applications (Using 16-Channel, 16-Bit, (Rev. A) 2021年 2月 26日
Application note Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 2021年 1月 11日
Circuit design Circuit for protecting ADC with TVS diode and PTC fuse 2020年 8月 3日
Application brief Wide Common-Mode Differential Analog Input Module Solutions for Factory Automati 2020年 1月 15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

ADS8686SEVM-PDK — ADS8686S 16 通道 16 位元 1-MSPS 雙同步取樣 ADC 性能示範套件 (PDK)

ADS8686S 評估模組 (EVM) 性能示範套件 (PDK) 是一款用於評估具有整合式類比前端 (AFE) 之 ADS8686S雙同步取樣類比數位轉換器 (ADC) 的平台。

ADS8686SEVM-PDK 包含 ADS8686SEVM 板和精密主機介面 (PHI) 控制器電路板，可讓隨附的電腦軟體透過通用序列匯流排 (USB) 與 ADC 通訊，以進行資料擷取及分析。

使用指南: PDF
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模擬型號

ADS8686S IBIS Model

SBAM439.ZIP (69 KB) - IBIS Model
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計算工具

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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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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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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模擬工具

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-01576 — 具有 16 位元 1-MSPS 雙同步取樣 ADC 的高準確度類比輸入模組參考設計

此參考設計在廣泛輸入範圍內，使用精密 16 位元 SAR ADC 準確測量 16 通道 AC 電壓及電流輸入。此範圍涵蓋保護與測量要求 (包括 IEC 61850-9-2 的取樣要求)，可簡化系統設計並提升跳脫時間重複性、性能與可靠性。AC 類比輸入模組 (AIM) 使用具有整合電源轉換器或採用六通道的數位隔離器，與主機處理器隔離。在最簡單的配置中，完整的 AC AIM 只需使用五種 TI 產品即可設計，進而實現系統成本與尺寸最佳化。警報功能會以取樣方式識別 AC AIM 故障，以加快故障偵測速度。ADC 具有額外的輔助通道，可診斷數位隔離器電源的輸出，或補償量測類比輸入的溫度漂移。
Design guide: PDF
電路圖: PDF
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LQFP (PZA) 80 Ultra Librarian
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