Fully Differential IF 15 dB Amplifier Achieves 50 dBm OIP3

The LTC6430-15 from Linear Technology is a 15 dB RF/IF amplifier, which achieves high dynamic range in a 100 Ohm differential environment from 20 MHz to 1 GHz and beyond. Two performance grades are available: at 240 MHz, the A-grade OIP3 is typically 50 dBm and is fully tested and guaranteed to be a minimum of 47 dBm. Noise Figure is 3 dB and power consumption is 800 mW. This combination provides the wide dynamic range needed for high performance intermediate frequency communications and CATV applications. The amplifier is unconditionally stable, and the input and output are internally matched to 100 Ohm differential. With greater than 2.75 VP-P linear output swing, it is suited for driving high speed, high performance ADCs. With two 1:1.33 baluns, the device can be used as a high fidelity 75 Ohm CATV amplifier. The LTC6430-15 is available in 4 x 4 mm QFN-24 packaging with exposed pad, and is specified for operation from -40°C to 85°C case temperature. Pricing starts at $6.44 each for the A-grade version and $3.69 each for the B-grade/1,000.

LINEAR TECHNOLOGY CORPORATION