Description
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, so that it has the functions of sending and receiving short messages, voice calls, data transmission through the remote data acquisition module platform . The remote data collection module can realize the main communication function of the ordinary remote data collection module mobile phone, which can also be said to be a "lite" mobile phone. Computer, MCU and ARM can be connected to remote data acquisition module through RS232 serial port, and various voice and data communication functions can be realized through AT command control module.Parameter:1.The module only needs a single power supply (2.7-5.5vdc) with excellent power consumption performance. The typical working current at 3.3v is 33mA.2.The maximum output data is 500Ksps/16Bit.3.With 8 channel input and 1 channel AUX (direct ADC input), each channel can be independently configured with input range and polarity, supporting ± 0.64v, ± 1.28v, ± 2.56v, ± 5.12v, ± 10.24v, + 5.12v, + 10.24v input range.4.Internal or external reference sources can be configured through the resistance jumper.Q：ADS8688 with ADS8688A the differenceAnswer: ADS8688A Than ADS8688 more than two levels PGA Gain, they are ±0.15625*VREF, ±0.3125*VREFQ：Is each channel independent 500ksps data update rate?Answer: ADS8688A Only one 500ksps of SAR ADC, therefore 8 the total data update rate of each channel is 500ksps, ADS8688A with automatic scan conversion mode, when multiple channels are converted, can automatically switch channels and convertQ：ADS8688A with AD7606 how to Choose:Answer: ADS8688A passed MUX switch 8 channels, therefore, asynchronous conversion, but ADS8688A each channel has PGA flexible configuration of input range and polarity please refer to the corresponding specifications for detailed differences.
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