Linear Announces Fully Differential IF 15dB RF/IF Amplifier

Noise Figure is 3dB, which corresponds to an input-referred amplifier noise of 1nV/√Hz. DC power consumption is 800mW. This combination of low noise and low distortion provides wide dynamic range needed for high performance intermediate frequency communications and CATV applications.



The LTC6430-15 is easy to use, it is unconditionally stable, and the input and output are internally matched to 100Ohm differential. With greater than 2.75VP-P linear output swing, it is well suited for driving high speed, high performance ADCs. 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 4mm x 4mm QFN-24 package with exposed pad for best thermal performance and low inductance. It 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 in 1,000-piece quantities.



Summary of Features: LTC6430-15



•20MHz to 2000MHz Bandwidth

•15.2dB Power Gain

•OIP3 at 240MHz:

o 50dBm typ, 47dBm min A-Grade

o 47dBm typ B-Grade

•3.0dB NF at 240MHz

•>2.75VP-P Linear Output Swing

•24dBm P1dB

•100Ohm Differential Gain-Block Operation

•Single 5V Supply, 160mA

•Unconditionally Stable

• 4mm x 4mm 24-Lead QFN Package