MMIC integrates amplifiers for mobile TV
20 May 2008
Toshiba Electronics Europe adds the TA4029 to its SiGe amplifiers to minimise power in mobile applications.
The device integrates a low noise amplifier with a bypass function into a single MMIC (monolithic microwave integrated circuit). It offers improved dynamic range and distortion characteristics of the tuner circuit by switching to low power bypass mode when high gain operation is not needed.
The amplifier can be used for digital terrestrial and mobile TV tuner applications as well as VHF-UHF designs, where input signal strengths are variable, but where low current consumption and good linearity are critical.
The TA4029 is designed to operate from 2.3V to 3.3V and in the frequency range from 40MHz to 1,000MHz. In low noise mode, the supply current is only 4mA while typical gain and noise figures are rated 13dB at 1GHz and just 1.2dB respectively. In bypass mode, the supply current drops to 3µA, maximum, and typical loss is just 2dB at 1GHz.
The amplifier can switch between low noise amplification and no distortion pass-trhough mode with a single mode voltage control.
The device is available as the TA4029CTC in a CST6C leadless package, measuring 1.15mm x 1.5mm x 0.38mm or as the TA4029TU in a 0.7mm flat lead UF6 package, with an SOT-363 footprint. Both operate from -40°C to 85°C.
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