Datasheet

AD8646/AD8647/AD8648
Rev. D | Page 12 of 20
V
SY
= 2.7V TO 5V
T
A
= 25°C
TIME (1s/DIV)
VOLTAGE (1µV/DIV)
0
6527037
Figure 34. 0.1 Hz to 10 Hz Voltage Noise
V
SY
= 2.7V TO 5V
T
A
= 25°C
100
10
100 1k
1000
1
10 10k
FREQUENCY (Hz)
VOLTAGE NOISE DENSITY (nV/√Hz)
06527-035
Figure 35. Voltage Noise Density vs. Frequency
2.5
0
05.0
SUPPLY VOLTAGE (V)
SUPPLY CURRENT PER AMPLIFIER (mA)
2.0
1.5
1.0
0.5
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
T
A
= 25°C
06527-039
Figure 36. Supply Current per Amplifier vs. Supply Voltage
V
SY
= 5V
A
V
= 1
BW = 30kHz
R
L
= 100kΩ
f = 1kHz
0.01
0.001
0.010.001 0.1
1
0.1
0.0001
1
OUTPUT AMPLITUDE (V rms)
THD + N (%)
06527-034
Figure 37. THD + Noise vs. Output Amplitude
1000
100
10
1
0.1
25 125105806545
INPUT BIAS CURRENT (pA)
TEMPERATURE (°C)
V
SY
= 5V
06527-038
Figure 38. Input Bias Current vs. Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
100 1k 10k
OUTPUT SWING (V p-p)
FREQUENCY (kHz)
V
SY
= 5V
V
IN
= 4.9V
A
V
= 1
R
L
= 10kΩ
T
A
= 25°C
06527-036
Figure 39. Maximum Output Swing vs. Frequency