SAN JOSE -- Atmel Corp.'s Wireless & Microcontrollers division today rolled out a new series of integrated frontend circuits for family radio products--also known as walkie-talkies--and remote control applications operating in the 400-to-500-MHz frequency range. The new chips are fabricated in silicon-germanium (SiGe) technology.
The T0980 frontend devices consist of a low-noise amplifier (LNA) and power amplifier (PA) that can be switched off completely to save power, said Atmel. The LNA provides a gain of 19 dB, typically, and it offers the possibility to adjust signal behavior (maximum IIP3= -10 dBm at 19 dB gain) by an external control current. Low noise of 1.7 dB at 19 dB gain is combined with good reverse isolation--minimum -20 dB, said the company.
Atmel said the PA's output power can be controlled by external voltage and it has a typical maximum value of 33 dB. The PA can be shut down completely to reduce the current consumption to 10 microamps.
Samples of the T0980 are available in a PSSO16 package. Volume production has begun. Pricing starts at $1.80 each in quantities of 10,000.