ADS8688W

ACTIVO

ADC SAR de suministro único, 16 bits, 500 kSPS y 8 canales con entradas diferenciales de ±12V

Detalles del producto

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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos ADS868xW 16 -Bit, 500 kSPS, 4- and 8-Channel, Single-Supply, SAR ADCs With Bipolar Input Ranges datasheet (Rev. A) PDF | HTML 16/06/2026
Circuit design High common-mode differential input voltage to ±10-V ADC input circuit (Rev. A) PDF | HTML 24/09/2024
Circuit design Reducing effects of external RC filter circuit on gain and drift error (Rev. B) PDF | HTML 19/09/2024
Circuit design Circuit to increase input range on an integrated analog front end (AFE) SAR ADC (Rev. B) PDF | HTML 12/09/2024
Circuit design Input Protection for High-Voltage ADC Circuit with TVS Diode (Rev. A) PDF | HTML 2/05/2023
Product overview PLC Analog Input Front-End Architectures PDF | HTML 31/07/2022
Nota sobre la aplicación EMC Compliance Testing for Precision ADC Systems (Rev. A) PDF | HTML 27/05/2022
Nota sobre la aplicación Circuit for detecting input floating on ADS8681 ADC PDF | HTML 31/03/2021
Nota sobre la aplicación Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 11/01/2021
Circuit design Circuit for protecting ADC with TVS diode and PTC fuse PDF | HTML 3/08/2020
Nota sobre la aplicación Extending Input Voltage Range and Understanding Associated Errors for ADC With I 9/11/2018
Artículo técnico Improving sensor DAQ performance using the PRU-ICSS for grid protection and contro PDF | HTML 9/10/2018
Artículo técnico Interfacing multiple ADCs to a single processor for grid protection and control PDF | HTML 13/09/2018
Artículo técnico Analog interfacing for grid infrastructure with Sitara processors PDF | HTML 15/02/2018
Informe Voltage-reference impact on total harmonic distortion 1/08/2016
Más documentación SAR ADCs for PLC Applications PDF | HTML 11/02/2016
Guía del usuario Phase-Compensated 8-Ch Multiplexed Data Acquisition System for Power Automation (Rev. B) 12/03/2015

Diseño y desarrollo

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