Voltage DAC (12-bit) (VDAC12) | サイプレス セミコンダクタ
Voltage DAC (12-bit) (VDAC12)
The VDAC12 is a 12-bit DAC based on a resistor ladder DAC. The core is closely integrated with the Continuous Time Block (CTB), which provides easy buffering of the DAC output voltage through one of its opamps. The CTB can additionally provide a buffered input reference voltage and a sample/hold feature for reduced power while maintaining the DAC output. See the Technical Reference Manual (TRM) for details on the CTB. The DAC reference can come from VDDA or from any buffered signal though the CTB opamp. This can be an external signal through a GPIO or from the analog reference (AREF). The control interface provides an option to control the DAC output through CPU and DMA. This includes a double buffered DAC voltage control register, clock input for programmable update rate, interrupt on DAC buffer empty to CPU, and trigger to DMA.