Datasheet

© 2011 Microchip Technology Inc. DS25007B-page 15
MCP6V26/7/8
Note: Unless otherwise indicated, T
A
=+25°C, V
DD
= +2.3V to 5.5V, V
SS
= GND, V
CM
=V
DD
/3, V
OUT
=V
DD
/2,
V
L
=V
DD
/2, R
L
=10kΩ to V
L
, C
L
= 60 pF and CS = GND.
2.4 Input Noise and Distortion
FIGURE 2-35: Input Noise Voltage Density
and Integrated Input Noise Voltage vs.
Frequency.
FIGURE 2-36: Input Noise Voltage Density
vs. Input Common Mode Voltage.
FIGURE 2-37: Intermodulation Distortion
vs. Frequency with V
CM
Disturbance (see
Figure 1-7).
FIGURE 2-38: Intermodulation Distortion
vs. Frequency with V
DD
Disturbance (see
Figure 1-7).
FIGURE 2-39: Input Noise vs. Time with
1 Hz and 10 Hz Filters and V
DD
=2.3V.
FIGURE 2-40: Input Noise vs. Time with
1 Hz and 10 Hz Filters and V
DD
=5.5V.
1,00010,000
;
o
ltage;
D
ensity
;
V
DD
= 5.5V
V
DD
= 2.3V
1001,000
o
ise V
o
-P
)
l
tage
D
/
Hz)
10
100
n
put N
o
E
ni
(μV
P
ise Vo
l
e
ni
(nV
/
e
ni
10
100
r
ated I
n
E
p
ut No
110
1E 01
1E 02
1E 03
1E 04
1E 05
Integ
r
In
p
10
1k
10k
100k
E
ni
(0 Hz to f)
100
1
.
E
+
01
1
.
E
+
02
1
.
E
+
03
1
.
E
+
04
1
.
E
+
05
Fre
q
uenc
y
(
Hz
)
10
1k
10k
100k
100
0
10
20
30
40
50
60
70
80
90
100
-0.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Common Mode Input Voltage (V)
V
DD
= 5.5V
V
DD
= 2.3V
Input Noise Voltage Density
(nV/Hz)
f < 5 kHz
0.1
1
10
100
1.E+02 1.E+03 1.E+04 1.E+05
Frequency (Hz)
IMD Spectrum, RTI (µV
PK
)
G
DM
= 1 V/V
V
CM
tone = 50 mV
PK
, f = 1 kHz
100 1k 10k 100k
IMD tone at DC
residual 1 kHz tone
V
DD
= 2.3
V
V
DD
= 5.5
V
0.1
1
10
100
1.E+02 1.E+03 1.E+04 1.E+05
Frequency (Hz)
IMD Spectrum, RTI (µV
PK
)
100 1k 10k 100k
G
DM
= 1 V/V
V
DD
tone = 50 mV
P-P
, f = 1 kHz
IMD tone at DC
1 kHz tone
V
DD
= 5.5V
V
DD
= 2.3V
0 102030405060708090100
t (s)
Input Noise Voltage; e
ni
(t)
(0.2 µV/div)
V
DD
= 2.3V
NPBW = 10 Hz
NPBW = 1 Hz
0 102030405060708090100
t (s)
Input Noise Voltage; e
ni
(t)
(0.2 µV/div)
V
DD
= 5.5
V
NPBW = 10 Hz
NPBW = 1 Hz