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1
Standard ICs
Dual operational amplifier
BA4558 / BA4558F / BA4558N
The BA4558, BA4558F, and BA4558N are monolithic ICs with two operational amplifiers featuring low power consumption and internal phase compensation mounted on a single silicon chip. These products offer high speed, a
wide band width, and low noise.
Outstanding thermal characteristics and voltage gain band width make these ICs ideal for use in a wide variety of
electronic circuits. The BA4558 comes in an 8-pin DIP package and is compatible with the 4558 operational amplifier. The BA4558F comes in an 8-pin SOP package, and the BA4558N in an 8-pin SIP package.
•
Applications
Active filters
Audio amplifiers
VCOs
Other electronic circuits
•
Block diagram
1ch
2ch
V
CC
OUT2
– IN2
+ IN2
OUT1
– IN1
+ IN1
V
EE
4
3
2
1 8
7
5
6
+–
–
1ch
2ch
OUT1
1
– IN1
2
+ IN1
3
V
EE
4
+ IN2
5
– IN2
6
OUT2
7
V
CC
8
+
–
+
–
BA4558 / BA4558F BA4558N
+
•
Features
1) Low power dissipation of approximately 50mW
(typ.).
2) Built-in output short-circuit protection circuit.
3) Internal phase compensation.
4) No latch-up.
5) Wide range of common mode and differential voltage.
6) High gain and low noise.
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Standard ICs BA4558 / BA4558F / BA4558N
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Internal circuit configuration
VCC
– IN
+ IN
V
EE
R1
R9
R8
R7
R6
R5
R4
R3R2
Q5
Q13
Q15
Q11
Q12
Q14
Q8
Q9
Q10
Q6
Q4Q3
Q2Q1
Q7
OUT
D
•
Absolute maximum ratings (Ta = 25°C)
Parameter Symbol
Limits
Unit
BA4558 BA4558F BA4558N
Power supply voltage V
CC ± 18 ± 18 ± 18 V
Power dissipation 800
∗
550
∗
900
∗
mW
Differential input voltage V
ID ± 30 ± 30 ± 30 V
Common-mode input voltage V
I ± 15 ± 15 ± 15 V
Operating temperature Topr – 40 ~ + 85 – 40 ~ + 85 – 40 ~ + 85 °C
Storage temperature – 55 ~ + 125 – 55 ~ + 125 – 55 ~ + 125 °C
Pd
Tstg
∗
Refer to Pd characteristics diagram.
The values for the BA4558F are those when it is mounted on a glass epoxy board ( 50mm × 50mm × 1.6mm) .
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Standard ICs BA4558 / BA4558F / BA4558N
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Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = + 15V, VEE = – 15V)
Parameter Symbol Typ. Max. Unit
Input offset voltage V
IO — 0.5 6.0 mV RS ⬉ 10kΩ
Input offset current I
IO — 5 200 nA
Input bias current I
B — 60 500 nA
High-amplitude voltage gain A
V 86 100 — dB
Common-mode input voltage V
ICM ± 12 ± 14 — V
Maximum output voltage V
OH ± 12 ± 14 — V RL ⭌ 10kΩ
Minimum output voltage V
OL ± 10 ± 13 — V RL ⭌ 2kΩ
Common-mode rejection ratio CMRR 70 90 — dB R
S ⬉ 10kΩ
Power supply voltage rejection ratio PSRR — 30 150 µV / V R
S ⬉ 10kΩ
Slew rate S.R. — 1.0 — V /
µs
Channel separation CS — 105 — dB f = 1kHz
ConditionsMin.
R
L ⭌ 2kΩ, VO = ± 10V
A
V = 1, RL ⭌ 2kΩ
•
Electrical characteristic curves
Fig.1 Power dissipation vs. ambient
temperature
AMBIENT TEMPERATURE: Ta (°C)
POWER DISSIPATION: Pd (mW)
1200
1000
800
600
400
200
0
0 25 50 7585 100 125 150
BA4558N
BA4558F
BA4558
4
5
3
2
0 ± 10 ± 20
POWER SUPPLY VOLTAGE: V
±
(V)
QUIESCENT CURRENT: IQ (mA)
Fig.2 Quiescent current vs. power
supply voltage
1M 10M
120
100
80
60
40
20
0
1 10 100 1k 10k 100k
FREQUENCY: f (Hz)
OPEN LOOP GAIN: AV (dB)
Fig.3 Open loop voltage gain vs.
frequency
32
28
24
20
16
12
8
4
0
100 1k 10k 100k 1M
FREQUENCY: f (Hz)
MAXIMUM OUTPUT VOLTAGE: VOM (V)
Fig.4 Maximum output voltage vs.
frequency
100
80
60
40
– 200 20406080
AMBIENT TEMPERATURE: Ta (°C)
INPUT BIAS CURRENT: IB (mA)
Fig.5 Input bias current vs. ambient
temperature
100
75
50
25
010203040
POWER SUPPLY VOLTAGE: V
+
(V)
INPUT BIAS CURRENT: IB (nA)
Fig.6 Input bias current vs. power
supply voltage
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4
Standard ICs BA4558 / BA4558F / BA4558N
+ 5
0
– 5
– 5
0
5
0 20406080
TIME (µs)
INPUT VOLTAGE OUTPUT VOLTAGE
V
IN (V) VOUT (V)
Fig.7 Output response characteristics
20
10
0
– 10
– 20
0 ± 10 ± 20
COMMON MODE INPUT VOLTAGE: VICM (V)
POWER SUPPLY VOLTAGE: V± (V)
Fig.8 Common mode input voltage vs.
power supply voltage
•
Operation notes
(1) Unused circuit connections
If there are any circuits which are not being used, we
recommend making connections as shown in Figure 9,
with the non-inverted input pin connected to the potential within the in-phase input voltage range (V
ICM).
VCC
VEE
To potential
in V
ICM
+
–
Fig.9 Unused circuit connections
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Standard ICs BA4558 / BA4558F / BA4558N
•
External dimensions (Units: mm)
BA4558 BA4558F
BA4558N
DIP8 SOP8
SIP8
0.5 ± 0.1
3.2 ± 0.2 3.4 ± 0.3
85
14
9.3
± 0.3
6.5 ± 0.3
0.3
±
0.1
0.51Min.
2.54
0° ~ 15°
7.62
0.4 ± 0.11.27
0.15
0.3Min.
0.15 ± 0.1
0.11
6.2 ± 0.3
4.4 ± 0.2
5.0 ± 0.2
85
41
1.5 ± 0.1
10.5 ± 0.5
1
8
2.54
3.5 ± 0.5
1.3
0.8
0.6
0.3 ± 0.1
2.8 ± 0.2
19.3 ± 0.2
1.2
5.8 ± 0.2
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