This part is a kind of semiconductor called BA4558.

Function of this product has Dual operational amplifier.

Manufacturers : Rohm

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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 Features • 1) Low power dissipation of approximately 50mW (typ.). 2) Built-in output [ ... ]

BA4558 PDF Datasheet Download