A.8.2. Digital-to-Analog Converter
The MAX® 10 FPGA comes with one external 16 bit digital-to-analog converter (DAC) device with an SMA output.
The MAX® 10 FPGA has two 12-bit successive approximation register (SAR) ADCs with sample rate of 1 MSps. One potentiometer is connected to ADC1_CH6 to function as a user-controlled DC, and it is connected to 2.5 V. To ensure performance evaluation of the ADCs, the MAX® 10 FPGA Development Kit has separate analog supply and split partition for analog ground. An external 16-bit single channel DAC is connected to Bank 7 to enable closed loop evaluation. The DAC uses a 3-wire serial interface that operates at clock rates up to 30 MHz. It is compatible with standard serial peripheral interface (SPI), quad SPI, Microwire, and digital signal processor (DSP) interfaces.
| Board Reference (U33) |
Signal Name | I/O Standard | MAX® 10 FPGA Pin Number | Description |
|---|---|---|---|---|
| U33.5 | DAC_SYNC | 3.3 V | U1.B10 | Level-triggered control input (active LOW). Frame synchronization signal for the input data. |
| U33.6 | DAC_SCLK | 3.3 V | A7 | Serial clock input |
| U33.7 | DAC_DIN | 3.3 V | A8 | Serial data input |