CA3078T RCA, metal can vintage for serious collector, single op-amp. Old stock. Price per each (1 pc). Datasheet here.
2MHz, Micropower Operational Ampliﬁer
The CA3078, CA3078A, and CA3078T are high gain monolithic operational ampliﬁers which can deliver milliamperes of current yet only consume microwatts of standby power. Theiroperating points are externally adjustable and frequency compensation may be accomplished with one external capacitor. The CA3078 and CA3078A provide the designer with the opportunity to tailor the frequency response and improve the slew rate without sacriﬁcing power. Operation with a single 1.5V battery is a practical reality with these devices.
The CA3078A is a premium device having a supply voltage range of V± = 0.75V to V± = 15V. The CA3078 has the same lower supply voltage limit but the upper limit is V+ = +6V and V- = -6V.