SLDS204B October 2014 – June 2020 PGA300
PRODUCTION DATA.
The device includes a 14-bit digital-to-analog converter that produces an absolute output voltage with respect to the accurate reference voltage or a ratiometric output voltage with respect to the PWR supply.
When the device undergoes a reset, the DAC registers are driven to the 0x0000 code.
The PGA300 integrates a 40-kΩ filter resistor at the output of the DAC, as shown in Figure 6. Together with an external capacitor connected to the DACCAP pin, an RC low-pass filter can be implemented between the DAC output and the DAC gain amplifier. The external capacitor can be disconnected by opening switch S1. The DACCAP_EN bit in the OP_STAGE_CTRL register controls the state of the S1 switch.