RF Amplifier Operates At Up To 1 GHz

Applications as a direct antenna driver in transmitters, as well as general-purpose buffering over a wide frequency range, will be found for the TSH690 RF amplifier. The device operates at up to 1 GHz from a supply of 1.5V to 5V. During production, the ICs are subjected to high-level RF tests to ensure high reliability in applications such as cordless phones and remote meter reading.A bias-control pin allows flexible adjustment of the output power and amplification mode. When the bias pin is connected directly to the supply rail, the device operates as a Class A linear amplifier. Insertion of a series resistor improves efficiency by imposing Class AB operation.