The ADC data output rate of CMS1237 in normal mode can be selected as: 10Hz, 40Hz, 640Hz, the default is 10Hz, and the setup time only needs 1 conversion cycle. The MCU can communicate with the CMS1237 through the 2-wire SPI interface SCLK, DRDYB/DOUT, and configure it, such as channel selection, PGA selection, and output rate selection.
CMS1237 is a high-precision, low-power analog-to-digital conversion chip. Support one or two differential input channels, built-in temperature sensor and high-precision oscillator. The PGA gain of CMS1237 can be selected as: 1, 2, 4, 8, 16, 32, 64, 128, 256.
> High-precision low-power analog-to-digital conversion module
> Electric ADC rate optional
> Can communicate with the master through SPI
> Built-in crystal oscillator
> With temperature sensor
> With Power down function
> SPI fastest speed 1.1MHz
> ADC in-band short switch, system chopper switch
> Package type: SOP8
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