TAT7457

TAT7457 CATV 75 Ω pHEMT Adjustable Gain RF Amplifier Applications      Single-ended and Push-pull Optical Receivers Low-noise Drop Amplifiers Distribution Amplifiers Multi-Dwelling Units Single-ended Gain Block SOT-89 package Product Features              Gain, return loss and bias externally adjustable On-chip active bias for consistent bias current and repeatable performance DC – 2000 MHz bandwidth Low noise: typical NF < 2 dB to 1000MHz Flexible 5 V to 8 V biasing IDD(5V) = 120 mA typical in application circuit 19 dB typical gain in application circuit +40 dBm typical OIP3 +61 dBm typical OIP2 +21 dBm typical P1dB Low distortion: CSO -66 dBc, CTB -78 dBc (10 dBmV/ch at input, 80 ch NTSC flat) pHEMT device technology SOT-89 package Functional Block Diagram RF IN GND RFOUT External feedback resistor allowing gain and return loss adjustment www.DataSheet.net/ General Description The TAT7457 is a low cost RF amplifier designed for applications from DC to 2000 MHz. The balance of low noise and distortion provides an ideal solution for a wide range of broadband amplifiers used in cable television applications such as optical receivers and low noise front ends. The TAT7457 has features allowing a great deal of designin flexibility. Gain and return loss are adjustable with an external feedback resistor. An internal bias circuit mitigates the effect of temperature and process variation and an external resistor may be used to adjust the bias current to opt...