βE5517

The βE5517 is a dual transconductance operational amplifier made by IPRS Băneasa [1].

The I.P.R.S. Băneasa Full Line Condensed Catalog (1990) lists the βE5517A and βE5517, marked as preliminary data: two current controlled transconductance amplifiers, each with a differential input and a push-pull output, with significant design and performance advantages over similar devices for all types of programmable gain applications; constant impedance buffers effectively eliminate the changes in output offset voltage when the amplifier bias current is varied [1]. Its features are the constant impedance buffers, a buffer VBE that stays constant when the amplifier bias current changes, pin compatibility with the βM13600, excellent matching between the amplifiers and linearizing diodes; the applications are multiplexers, timers, electronic music synthesizers, Dolby HX (headroom extension) systems, current controlled amplifiers and filters, and current controlled oscillators and impedances [1].

Pins (MP-117, top view): 1 amp 1 bias input, 2 diode 1 bias, 3 input 1+, 4 input 1−, 5 output 1, 6 V−, 7 buffer 1 input, 8 buffer 1 output, 9 buffer 2 output, 10 buffer 2 input, 11 V+, 12 output 2, 13 input 2−, 14 input 2+, 15 diode 2 bias, 16 amp 2 bias input [1].