The second selected element selects one of the second groups of voltage references as an output analog voltage according to N-M least significant bits of the N-bit digital signal.
第 二选择单元依据N位数字信号的N-M个最低位，选择第二组参考电压之一作 为输出模拟电压。
2
The relation between outputvoltage and the circuit element parameters is given.
推导出系统输出和电路参数关系公式。
3
The method for setting the operation mode of the chip includes that: the element is connected at the bias voltage end of the output driver;