Fully differential amplifier achieves high dynamic range up to 1GHz
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Linear technology has announced the LTC6430-15, a 15db amplifier designed to achieve high dynamic range in a 100Ohm differential environment from 20MHz to 1GHz and higher.
Two performance grades are available at 240MHz; the a grade OIP3 is typically 50dbm and is fully tested and guaranteed to be a minimum of 47dbm.
Noise figure is rated at 3db, which corresponds to an input referred amplifier noise of 1nV/vHz. Linear says the combination of low noise and low distortion provides the wide dynamic range needed for high performance intermediate frequency communications and CATV applications.
With greater than 2.75VP-P linear output swing, the LTC6430-15 is well suited for driving high speed, high performance a/d converters; two 1:2 baluns, dc blocking capacitors, and rf bias chokes are all that is needed externally to achieve a wideband 50Ohm balanced amplifier in communications applications.
With two 1:1.33 baluns, the LTC6430-15 can be used as a high fidelity 75Ohm CATV amplifier. P1dB is typically 24dBm.
The LTC6430-15 is available in a 4 x 4mm QFN-24 package with exposed pad for best thermal performance and low inductance. It is specified for operation from -40 to 85°C case temperature.
