SLAS986D November 2014 – February 2018 AMC7836
The AMC7836 device features an analog-control system centered on sixteen 12-bit DACs that operate from the internal reference of the device. Each DAC core consists of a string DAC and output-voltage buffer.
The resistor-string structure consists of a series of resistors, each with a value of R. The code loaded to the DAC determines at which node on the string the voltage is tapped off to be fed into the output amplifier. The voltage is tapped off by closing one of the switches connecting the string to the amplifier (see Figure 48). This architecture has inherent monotonicity, voltage output, and low glitch. This architecture is also linear because all the resistors are of equal value.