I'm amplifying 1V peak to peak sine wave at 1KHz from an AD9834 DDS (0V to 1V) with an AD8044 op amp in non-inverting mode with +5V single power supply but i'm getting an unwanted output offset, amplified signal start from 640mV instead of 0V..
AD8044 isn't rail-to-rail?
I'm on breadboard and i'm using AD8044 with:
pin 4: 5V
pin 5: IN+ from DDS (ch2 on image)
pin 6: IN- 1.3k resistor to ground
pin 7: Output signal (ch1 on image) and 1.3k resistor to pin 6
pin 11: GND
I've tried also a biasing resistor of 1K from IN+ to GND but none changed..
Oscilloscope probe C is 20pF