hi ,
my customer uses a 1 M resistor instead of a bypass cap, below is the comments:
we know that on the data sheet, a capacitor must be fitted here, unfortunately, a resistor with 1 Meg due to a wrong manufacturing process.
Our question is if you can estimate the effect of wrongly tipped component based on your internal detailed documentation. According to the information that we gather from the data sheet it is at the bypass pin to bias the input to half the supply voltage. In our opinion, the capacitor serves as a back-up capacitor for exactly this voltage. According to the datasheet, the cap can be omitted when a differential signal is on the input. Adding a 1 M resistor at the bypass pin wihtout cap ,how the 2.1uA current will flow? In our opinion, the wrong insertion of the resistors will not affect the signal when a diff signal is on the input of the amplifer. We can unfortunately not say with certainty, because the datasheet gives no indication of the internal wiring of the bypass pin. For us, as well as our customers, this is extremely important, as our customer needs to know if he can avoid the immense costs of rework. regards, kamal
