s Overview
The AN6555, the AN6556, and the AN6556S are low
noise, high slew rate dual operational amplifiers with
phase compensation circuits built-in.
They are suitable for applications to various electronic
circuits such as active filters and audio preamplifiers.
s Features
Phase compensation circuit
High voltage gain:Gv=100 dB typ.
Low noise:input referred noise voltage Vni=1.5
Vrms
typ.
High slew rate:SR=2V/
s typ.
Output short-circuit protection
AN6555, AN6556, AN6556S
Low Noise Dual Operational Amplifiers
s Block Diagram
9
8
7
6
5
4
3
2
0.3
+ 0.1
0.05
23.3
0.3
6.0
0.3
2.4
0.25
3.3
0.25
1.5
0.25
0.5
0.1
2.54
1.5
0.25
1.4
0.3
30
3.0
0.3
Unit:mm
AN6555
1
9-pin SIL Plastic Package (SIP009-P-0000)
Unit:mm
1
2
3
4
6.3
0.3
3.8
0.25 (3.45)
2.54
1.2
0.25
0.5
0.1
7.62
0.25
3--15
0.15
+ 0.1
0.05
AN6556
9.4
0.3
0.51min.
8
7
6
5
8-pin DIL Plastic Package (DIP008-P-0300B)
1
2
3
4
0.4
0.25
0.6
0.3
1.27
0.1
0.1
0.3
0.15
0.65
1.5
0.2
5.0
0.3
4.2
0.3
6.5
0.3
8
7
6
5
Unit:mm
AN6556S
8-pin PANAFLAT Plastic Package (SOP008-P-0225A)
+
+
V
CC
V
O1
V
CC
V
O2
V
in1
+
V
EE
1
1
2
2
3
4
5
6
8
7
9
V
in1
V
in2
V
in2
+
(GND)
AN6555
V
CC
V
O2
V
EE
(GND)
1
2
3
4
8
7
6
5
V
in1
V
O1
V
in1
+
V
in2
V
in2
+
+
+
1
2
AN6556
AN6556S
V
CC
V
ID
V
ICM
P
D
T
opr
T
stg
V
V
V
mW
C
C
Parameter
Symbol
Rating
Unit
s Absolute Maximum Ratings (Ta=25C)
18
30
15
500
360
20 to +75
55 to +150
55 to +125
Voltage
Power dissipation
Operating ambient temperature
Storage temperature
Supply voltage
Differential input voltage
Common-mode input voltage
AN6555, AN6556
AN6556S
AN6555, AN6556
AN6556S
Parameter
Symbol
Condition
min
typ
max
s Electrical Characteristics (V
CC
=15V, VEE=15V, Ta=25C)
Input offset voltage
V
I (offset)
6
mV
0.5
R
S
10k
Input offset current
I
IO
200
nA
5
Input bias current
I
Bias
500
nA
Voltage gain
86
G
V
dB
R
L
2k
, V
O
=
10V
Maximum output voltage
12
V
O (max.)
V
14
10
V
13
Common-mode input voltage width
12
V
CM
V
14
100
Common-mode rejection ratio
70
CMR
dB
90
Supply voltage rejection ratio
SVR
V/V
30
Power consumption
P
C
170
mW
90
R
L
=
Slew rate
SR
V/
s
2
R
L
2k
150
Equivalent input noise voltage
V
ni
Vrms
1.5
R
S
=1k
, DIN/AUDIO
Unit
R
L
10k
R
L
2k
>
=
>
=
>
=
>
=
<
=
AN6556, AN6556S
Pin No.
Pin name
1
2
3
4
5
6
7
8
Ch.1 output
Ch.1 inverting input
Ch.1 non inverting input
V
EE
(GND)
Ch.2 non inverting input
Ch.2 inverting input
Ch.2 output
V
CC
s Pin Descriptions
AN6555
Pin No.
Pin name
1
2
3
4
5
6
7
8
9
V
CC
Ch.1 output
Ch.1 inverting input
Ch.1 non inverting input
V
EE
(GND)
Ch.2 non inverting input
Ch.2 inverting input
Ch.2 output
V
CC
s Characteristics Curve
160
140
120
100
80
60
40
20
0
1
10 100 1k 10k
Frequency f (Hz)
Voltage Gain G
V
(dB)
100k 1M 10M 100M
V
CC
=15V
V
EE
=15V
Ta=25C
V
CC
=15V
V
EE
=15V
Ta=25C
V
CC
=15V
V
EE
=15V
Ta=25C
V
CC
=15V
V
EE
=15V
R
L
=2k
G
V
f
30
25
20
15
10
5
0
10
100
1k
10k
100k
Load Resistance R
L
(
)
Maximum Output Voltage V
O (max.)
(V)
V
O (max.)
R
L
200
100
3
5
10
20
30
50
0
10
100
1k
10k
Frequency f (Hz)
Equivalent Input Noise Voltage V
ni
(nV/ Hz)
V
ni
f
40
35
30
25
20
15
10
5
0
0
10
100
1k
10k
100k
1M
Frequency f (Hz)
Supply Voltage V
CC
(V)
Maximum Output Voltage V
O (max.)
(V)
V
O (max.)
f
20
15
10
5
0
5
10
15
20
Common-Mode Input Voltage V
CM
(V)
V
CM
V
CC
0
2
4
6
8
10
12
14
16
Supply Voltage V
CC
(V)
20
15
10
5
0
5
10
15
20
Maximum Output Voltage V
O (max.)
(V)
V
O (max.)
V
CC
0
2
4
6
8
10
12
14
16
12
10
8
6
4
2
0
0
10
20
30
40
50
60
Time t (
s)
Output Voltage V
O
(V)
V
O
t
5
4
3
2
1
0
20
0
20
40
60
80
100
Ambient Temperature Ta (C)
Supply Current I
CC
(mA)
I
CC
Ta
V
CC
=15V
V
EE
=15V
Ta=25C
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