PGA Output 0V-2.6V with VDDA at +5V | Cypress Semiconductor
PGA Output 0V-2.6V with VDDA at +5V
I am using three PGA's a project to buffer R/C filtered PWM outputs. All are configured with a gain of 1. I am using a CY8C3866PVI-021ES2 for the development. The problem PGA has input on P2_6 and the output on P2_4. If I bypass the PGA with internal routing I see the signal on P2_4 range from about 0V to about 5V as expected per the PWM output. If route through the PGA the maximum output voltage is about 2.6V. I connected a VDAC8 to the PGA input and saw about the same results. I get a slightly higher output when the PGA power is increased. Is this an ES2 problem or a Creator problem?
Placement looks like this:
I tried to force other usage with the directive
PGA_4_20:SC ForceComponentFixed F(SC,1) but it was ignored during synthesis. Any ideas?