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A.8.2. Digital-to-Analog Converter
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 |