Differential driver doubles as versatile RF-switch driver

摘要

DESIGNED AS A HIGH-SPEED driver for 12-bit ADCs, the AD8137 controls SPDT GaAs (gallium-arsenide) FET-MMIC(microwave-monolithic-IC) and PIN-diode RF switches and thus provides a low-cost and versatile alternative to conventional switch drivers. This circuit achieves typical switching speeds of approximately 7 to 11 nsec, including the propagation delays of the driver and RF load.