ROHM BA4558N, BA4558F, BA4558 Datasheet
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.
2
Standard ICs BA4558 / BA4558F / BA4558N
•
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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