View ne5517 datasheet:

Philips Semiconductors Linear Products Product specification Dual operational transconductance amplifier NE5517/5517A DESCRIPTION PIN CONFIGURATION The NE5517 contains two current-controlled transconductance N, D Packages amplifiers, each with a differential input and push-pull output. The NE5517 offers significant design and performance advantages over I 1 16 I ABCa ABCb similar devices for all types of programmable gain applications. D 2 15 D a b Circuit performance is enhanced through the use of linearizing 3 14 +IN +IN diodes at the inputs which enable a 10dB signal-to-noise a b improvement referenced to 0.5% THD. The NE5517 is suited for a 4 13 -IN -IN a b wide variety of industrial and consumer applications and is 5 VO 12 VO a b recommended as the preferred ci