Mixers chips combine different input signals into a single ended output signal.
Catalog

AD607ARSZ "Receiver-on-a-Chip" Mixer, 3V Receiver IF Subsystem
Analog Devices AD607 "Receiver-on-a-Chip" IF subsystem in...
AD608ARZ Mixer/Limiter/RSSI, 3V Receiver IF Subsystem
Analog Devices AD608 Low-Power Mixer/Limiter/RSSI 3V...
AD8343ARUZ High-Performance Active Mixer, DC ~ 2.5GHz
Analog Devices AD8343 High-Performance Broadband Active...
ADG709BRU CMOS Analog Multiplexer (2 x 4:1)
Analog Devices ADG709BRU Low-Voltage CMOS Analog...
HMC129LC4 GaAs MMIC Double Balanced Mixer for 4 ~ 8 GHz
Hittite Microwave Corporation HMC129 GaAs MMIC...
HMC213MS8 GaAs MMIC Double Balanced Mixer for 1.5 ~ 4.5GHz
Hittite Microwave Corporation HMC213 GaAs MMIC...
SA612AD Double-Balanced Mixer and Oscillator
NXP Semiconductors SA612AD Low-Power VHF Monolithic...