Twin NPN Transistors
NEC's first offering in this new TD package is the UPA862TD. Specifically designed for 1 to 3 GHz applications, the UPA862TD is a mixed die device that combines NEC's proven NE851 oscillator and NE685 buffer chips. The super low 1/f noise figure of the NE851 helps the designer achieve excellent phase noise performance, while on the buffer side, 12 GHz fT helps the device deliver good gain and power performance in the 1 to 2 GHz band. Each transistor is independently mounted within the device, making it easy for VCO engineers to configure oscillator/buffer and other two stage applications.