4
of
10
2.
Typical
Characteristics
1.E+05
1.E+06
1.E+07
1.E+08
1.E+09
1.E+10
10
100
1000
10000
100000
1000000
Gain
(V/A)
Frequency
(Hz)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
10
100
1000
10000
100000
Input
impedance
(
)
Frequency
(Hz)
SR556
SR555
Figure
1:
Gain
Figure
2:
Input
impedance
Cs
=
1.2nF
Cs
=
12nF
SR556
SR555
Cs
is
the
input shunt
capacitance