The AD7991YRJZ-1500RL7 is a 4-channel low power successive approximation Analog-to-digital Converter (ADC) with an I2C?-compatible interface. The track-and-hold amplifier allows each part to handle input frequencies of up to 14MHz and a multiplexer allows taking samples from four channels. It provides a 2-wire serial interface compatible with I2C interfaces. The converter comes in 2 versions and each version has an individual I2C address. This allows two of the same devices to be connected to the same I2C bus. Both versions support standard fast and high speed I2C interface modes. The converter comes in one version. It normally remains in a shutdown state, powering up only for conversions. The conversion process is controlled by a command mode, during which each I2C read operation initiates a conversion and returns the result over the I2C bus. When 4 channels are used as analog inputs, the reference for the part is taken from VDD, this allows the widest dynamic input range to the ADC.
Sequencer operation
I2C-compatible serial interface supports standard, fast and high speed modes
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