1
Standard ICs
Dual operational amplifier
BA4558 / BA4558F / BA4558N
The BA4558, BA4558F, and BA4558N are monolithic ICs with two operational amplifiers featuring low power con-
sumption 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 amplifi-
er. 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
VCC
OUT2
– IN2
+ IN2
OUT1
– IN1
+ IN1
VEE 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 volt-
age.
6) High gain and low noise.