Datasheet

Data Sheet AD8655/AD8656
Rev. E | Page 17 of 20
THD Readings vs. Common-Mode Voltage
Total harmonic distortion of the AD8655/AD8656 is well below
0.0007% with a load of 1 kΩ. This distortion is a function of the
circuit configuration, the voltage applied, and the layout, in
addition to other factors.
Figure 57. THD + N Test Circuit
Figure 58. THD + Noise vs. Frequency
+
–
V
IN
R
L
V
OUT
+2.5V
–2.5V
AD8655
05304-054
1.0
0.1
0.01
0.001
0.0001
%
20 100 1k 10k 80k50 500 5k 50k200 2k 20k
Hz
0.5
0.05
0.005
0.0005
0.2
0.02
0.002
0.0002
SWEEP 1:
V
IN
= 2V p-p
R
L
= 10kΩ
SWEEP 2:
V
IN
= 2V p-p
R
L
= 1kΩ
SWEEP 1
SWEEP 2
05304-055