Other Parts Discussed in Thread: LM4140
Tool/software: TI C/C++ Compiler
I have implemented analog to digital voltage conversion using the internal reference voltage of msp430f2003 AD16.However, when I use the external reference voltage, it cannot be used.
Internal reference software configuration: SD16CTL = SD16REFON+SD16SSEL_1;
External reference software configuration: SD16CTL = SD16SSEL_1;
Internal reference hardware: the VREF is grounded by a 104 capacitor.
External reference hardware: VREF with 3.0V LDO (LP2985IM5X) divided by two 100K resistors.
Can you help me identify the problem.