U4476B

Features:

Gain controlled amplifier for the 1st IF (36 MHz)
IF converter for the 2nd IF (7 MHz); VCO circuit is controlled by external PLL
Bandwidth of the output signal: 10 MHz (1 dB)
Internal AGC with average detection for the QAM modulated DVB signal, reference level is adjustable
5 V supply voltage; low-power consumption


Pinout




Specifications

Parameters	Symbol	Value	Unit
Supply voltage	Vs	5.5	V
Supply current	Is	100	mA
Power dissipation, Vs = + 5.5 V	P	550	mW
Output currents	Iout	5	mA
Junction temperature	Tj	+125	°C
Storage temperature	Tstg	25 to +125	°C
Electrostatic handling *)	VESD	tbd	V

*) Equivalent to discharging a 200 pF capacitor through a-0 resistor


Description

The U4476B is a bipolar circuit for the processing of DVB-Cable IF signals (Digital Video Broadcasting). The amplifier/ converter is suitable for QAM modulated IF signals (1st IF) and provides the gain controlled 2nd IF. With 5 V supply voltage the U4476B allows application in RF/IF front ends for DVB-Cable receivers (set top boxes).