Hi guys, image of circuit attached.
C50,53 = 4.7uF
C55 = 1uF
R2 = 105K
R3 = 100K
C46 = 2.2uF
As per equation 5; -1.22 * (105K + 100K)/100K = -2.5
Why wont this circuit output anything? I have tried 3 different chips all new. I can only think that using resistor values as high as 100 and 105k are the problem but regardless i didnt think that should be the issue as R2 should not be below 50K either as stated by datasheet. Power goes in, i can see 5V is input but the output is not working.
Is it perhaps because i have left the EN floating? Couldnt find mention of leaving it floating in the datasheet?
Thanks for any help :)