JAJSJY6 december 2020 DAC43701 , DAC53701
PRODUCTION DATA
The DACx3701 implement a continuous waveform generation feature. To set the device to this mode, set the START_FUNC_GEN (address D3h) to 1. In this mode, the DAC output pin (OUT) generates a continuous waveform based on the FUNC_CONFIG bits (address D1h). Table 8-6 shows the continuous waveforms that can be generated in this mode. The frequency of the waveform depends on the resistive and capacitive load on the OUT pin, high and low codes, and slew rate settings as shown in the following equations.
where:
REGISTER ADDRESS AND NAME | FUNC_CONFIG[1] | FUNC_CONFIG[0] | DESCRIPTION |
---|---|---|---|
D1h, GENERAL_CONFIG | 0 | 0 | Generates a triangle wave between MARGIN_HIGH (address 25h) code to MARGIN_LOW (address 26h) code with slope defined by SLEW_RATE and CODE_STEP (address D1h) bits |
0 | 1 | Generates Saw-Tooth wave between MARGIN_HIGH (address 25h) code to MARGIN_LOW (address 26h) code, with rising slope defined by SLEW_RATE and CODE_STEP (address D1h) bits and immediate falling edge | |
1 | 0 | Generates Saw-Tooth wave between MARGIN_HIGH (address 25h) code to MARGIN_LOW (address 26h) code, with falling slope defined by SLEW_RATE and CODE_STEP (address D1h) bits and immediate rising edge | |
1 | 1 | Generates a square wave between MARGIN_HIGH (address 25h) code to MARGIN_LOW (address 26h) code with pulse high and low period defined by SLEW_RATE (address D1h) bits |