Part Number:TPS5430
I am planning to use TPS5430 as lamp power supply where it is used in photometer application (light is incident on photo diode using 6V lamp)
My setup is such that by varying lamp intensity, ADC gain is set up. To vary lamp intensity , TPS feedback resistors (R1 in below image) are required to be adjusted as per ADC count requirement.
Now as improvised version of above setup I am planning to implement with Touch LCD display and digital pot where R1 will be replaced by digital pot IC and gain count will be set using LCD Display "Gain increment/decrement " menu on screen.
Please let me know is it feasible option? Any TI Digipot (1 OR 2 wire interface) available in chip package?