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ADS8686S

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16-channel 16-bit 1-MSPS dual simultaneous-sampling ADC with integrated analog front end (AFE)

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Data sheet

ADS8686S

ACTIVE
Data sheet Order now

Product details

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 (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 (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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* Data sheet ADS8686S 16-Channel, 16-Bit, 1-MSPS, Dual, Simultaneous-Sampling ADC With Integrated Analog Front-End datasheet (Rev. C) PDF | HTML 24 Jul 2020
Application note EMC Compliance Testing for Precision ADC Systems (Rev. A) PDF | HTML 27 May 2022
Application note Expanding Analog Input Channels in Grid Applications (Using 16-Channel, 16-Bit, (Rev. A) 26 Feb 2021
Application note Reducing Phase Delay by Averaging on ADS8686S with Burst Sequencer Mode PDF | HTML 11 Jan 2021
Circuit design Circuit for protecting ADC with TVS diode and PTC fuse 03 Aug 2020
Application brief Wide Common-Mode Differential Analog Input Module Solutions for Factory Automati 15 Jan 2020
EVM User's guide ADS8686SEVM-PDK User's Guide 11 Nov 2019

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