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ADS8688A 8 Channel SAR ADC Data Acquisition Module 16 Bit 500Ksps Unipolar Bipolar Input Module ADR444 4.096V Voltage Reference FR4 PCB 2.7-5.5Vdc 16 Bit Analog to Digital Converter

4.6 (1) Write Review
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$49.93

$ 24 .99 $24.99

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About this item

  • Features: 16 bit analog to digital converter (ADC) with integrated analog front end, 4 channel and 8 channel multiplexer with automatic and manual scanning function, 5V analog power supply: 1.65V to 5V I/O power supply, constant resistive input impedance of 1M Ω, input overvoltage protection of up to ± 20V. Low drift on chip 4.096V reference voltage
  • Performance： the total throughput of 500kSPS, differential nonlinearity (DNL): ± 0.5 least significant bit (LSB); Maximum integrated nonlinearity (INL): ± 0.75 LSB, the drift of gain error and offset error is lower, and the signal to noise ratio (SNR) is 92dB; Low power consumption: 65mW. SPI compatible interface, supporting daisy chain connection.Industrial temperature range: - 40 ° C to 125 ° C
  • ADS8688A provide a simple serial interface compatible with the Serial Peripheral Interface (SPI) for the digital host, and support the daisy chain connection of multiple devices. The digital power supply can provide a voltage in the range of 1.65V to 5.25V, so it can be directly connected to various host controllers.
  • Application: Power Automation Protective repeater PLC analog input module
  • Note: When Daisy function is not in use, connect Daisy pin to 9 low level.


The data acquisition module is based on the communication module of the remote data acquisition module platform. It integrates the communication chip, memory chip, etc. on a circuit board, enabling it to send and receive short messages, voice calls, data transmission and other functions through the remote data acquisition module platform. The remote data acquisition module can realize common remote data acquisition
The main communication functions of the mobile phone with integrated modules can also be said to be a "compact" mobile phone. The computer, microcontroller and ARM can be connected with the remote data acquisition module through RS232 serial port, and various voice and data communication functions can be realized through AT command control module.


Doug S
Reviewed in the United States on November 4, 2022
Board has no documentation or schematic. Not all the features chip appear accessible, i.e., Alarm Pin has no interface. Could be a better product if documented.