JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO.,LTD.
CJ4558CP--DUAL
OPERATONAL AMPLIFIER
1. Overview
The CJ4558CP is a dual operational amplifier designed for use as ripple filter, compensation
amplifier, audio pre-amplifier and linear amplifier in electronic devices. Its
features
are:
Built-in
phase compensation circuit
Low
noise: V
NI
= 2.5uV
Wide
bandwidth and high speed, BW = 3MHz
SOP-8
2. Block Diagram and Pin Description
2. 1 Block Diagram
8
7
6
5
A1
ＢＩＡＳ ＣＵＲＲＥＮＴ
A2
1
2. 2 Pin Description
Pin No.
1
2
3
4
Symbol
OUT
1
IN
1
-
IN
1
+
V
EE
2
3
4
Description
Pin No.
Output 1
5
Negative Feedback1
6
Positive Input 1
7
V
EE
8
Symbol
IN
2+
IN
2-
OUT
2
V
CC
Description
Positive Input 2
Negative Input 2
Output 2
V
CC
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO.,LTD.
Add:275
Binjiang Rd.(M),Jiangyin,China
Tel: (0510)
6852812
Page 1 of
6
Fax: (0510)
6858792
CHANGJIANG ELEC. CO.
CJ4558CP
3. Electrical Characteristics
3. 1 Absolute Maximum Ratings
Unless otherwise specified, T
amb
= 25
Parameter
Symbol
Supply Voltage
V
CC
/V
EE
Input Differential Voltage
V
ID
Input Common-mode Voltage
V
IC
Power Dissipation
P
D
Operating Temperature
T
amb
Storage Temperature
T
stg
3. 2 Electrical Characteristics
Unless otherwise specified, T
amb
= 25
Parameter
Supply Current
Input Offset Current
Input Bias Current
Input Common-mode
Voltage
Max. Output Voltage
Output Shot Current
Output Sink Current
Open Loop Voltage
Gain
Common-mode
Rejection Ratio
Supply Voltage
Rejection Ratio
Input Offset Voltage
Slew Rate
Bandwidth
Equivalent Input
Noise Voltage
Symbol
I
CC
/I
EE
I
IO
I
IB
V
IC
V
OM
I
OS
I
Osink
A
VO
CMRR
K
SVR
V
IO
S
R
BW
V
NI
R
S
=1k
f=30Hz~30kHz
V
O
= 10V
R
L
2k
R
S
R
S
10k
10k
86
70
R
L
10k
R
L
2k
V
CC
= 15V V
EE
= -15V
Value
Test Conditions
Min
Typ
4.0
5
60
12
12
10
14
14
13
40
40
100
90
30
0.5
1.0
3.0
2.5
150
6
Value
18
30
15
500
-30~75
-55~125
Unit
V
V
V
mW
Max
6.0
200
500
Unit
mA
nA
nA
V
V
V
mA
mA
dB
dB
uV/V
mV
V/uS
MHz
uV
Figs
4.5
4.2
4.2
4.3
4.4
4.4
4.4
4.4
4.7
4.3
4.1
4.1
4.6
4.7
R
S
10k
A
V
=1
R
L
2k
4. Test Circuit
Vcc
V
IO
1M
Ω
A
Vo
V
－
10k
Ω
10k
Ω
V
EE
V
IO
=V
O
/ 100 (V)
K
SVR
K
SVR
= (V
IO1
-V
IO2
) /5 (uV/V)
V
IO1
V
CC
=17.5V V
EE
= -17.5V
V
IO2
V
CC
=12.5V V
EE
= -12.5V
Fig 4.1
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CHANGJIANG ELEC. CO.
CJ4558CP
Vcc
A
I
IO
I
IO
=│I
I
(+)-I
I
(-)│
V
EE
Ｉ （－）
Ｉ
A
A
Fig 4.2
1M
Ω
10k
Ω
A
10k
Ω
V
－
V2
1M
Ω
Ｉ （＋）
Ｉ
Vcc
Vo
V
－
V
IC
V
2
is adjustable voltage
V
O
= 1V
V
EE
K
CMR
Differential Voltage Gain to Common-mode
Voltage Gain Ratio
Fig 4.3
Vcc
Vo
A
S2
V
EE
S1
A
B
Vcc/2
RL
A
－
V
－
Ios
Iosink
S3
Fig 4.4
V
OM 1+
S1=B
V
OM 1-
S1=A
V
OM 2+
S1=B
V
OM 2-
S1=A
Iosink
S1=A
Ios
S1=B
S2 OFF, S3 OFF
S2 OFF, S3 OFF
S2 ON,
S3 OFF
S2 OFF, S3 ON
S2 OFF, S3 ON
S2 OFF,
S3 ON
V
C C
A
－
Icc
V
C C
A
A
Vo
R
L
A
－
V
EE
I
EE
V
EE
Fig 4.5
Fig 4.6
Page 3 of
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CHANGJIANG ELEC. CO.
CJ4558CP
C2
C1
2k
Ω
R
V
C C
+
+
C1
G
R
V
I
A
Vo
A
VD
=20log(V
O
/V)
BW is the frequency of V
I
when V
O
=V
I
2k
Ω
V
EE
2k
Ω
Fig 4.7
5. Characteristics Curve
I
IB
－
Tamb
Avo
－
f
120
V+ =15V
70
60
50
40
30
－
20
0
20
40 60
80 100
V- =
－
15V
Input Bias Current I
IB
(nA)
Open Loop Voltage Gain
Avo（dB）
80
100
80
60
40
20
0
1
V+=15V
R
Ｌ
=2k
Ω
V- =
－
15V
Tamb=25
℃
10 100 1k 10k 100k 1M 10M
Ambient Temperature Tamb (
℃
)
Frequency f
（
Hz
）
Max. Output Voltage V
OM
V）
（
V
OM
－
V+ V-
15
Vo (pp) - f
10
5
0
－
5
－
10
－
15
6
8
10
12
14
16
18
Max. Output Peak Voltagae
24
Vo (pp)
16
V+=15V
V
_
－
15V
=
Tamb=25
℃
1
10
100
1k 10k 100k 1M
8
0
Supply Voltage V+ V-
（±
V
）
Frequency f (Hz)
Output Peak Voltage Vo(pp) (V)
Vo (pp) - RL
28
24
20
16
12
0.1
0.3
1.0
V+=15V
V
－
=
－
15V
Tamb=25
℃
3.0
10.0
Power Dissipation P（W）
Ｄ
Ｐ
Ｄ
５００
Ｔ½½½
３００
１００
０
２０
４０ ６０
８０ １００ １２０ １４０
Load Resistance R
)
Ｌ
(k
Ω
Ambient Temperature Tamb
（℃）
Page 4 of
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CHANGJIANG ELEC. CO.
CJ4558CP
6. Application Circuit
22k
Ω
270k
Ω
3300pF
0.012
μ
F
3.3
μ
F
470
Ω
L INPUT
2.2k
Ω
1800pF
3
1/2
2
270pF
4
1
+
L OUTPUT
47k
Ω
560
Ω
V- =
－
13V
+
100
μ
F
0.01
μ
F
100
μ
F
+
270pF
47k
Ω
560
Ω
0.01
μ
F
V+=13V
6
R INPUT
2.2k
Ω
1800pF
8
1/2
7
+
3.3
μ
F
470
Ω
R OUTPUT
5
3300pF
22k
Ω
0.012
μ
F
270k
Ω
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