U4459B Datasheet (TEMIC Semiconductors)

U4459B, IF Amplifier

The U4459B is an integrated bipolar circuit suitable for the IF processing in cable-DVB receiver (DVB = Digital Video Broadcasting) and cable network application.

The circuit contains a wideband IF amplifier, mixer stage, gain control for the IF amplifier and a tuner-AGC (Automatic Gain Control) wit

U4459B Features

* D Input frequency range 30 to 50 MHz (1st IF) D Wideband IF amplifier with high linearity D Gain control of the IF amplifier by external dc voltage D Mixer stage with local oscillator input (symmetrical or unsymmetrical) D High output level of mixed signal (2nd IF) (up to 2.4 V, peak-to-peak value)