FEATURES
Sixth-order filters Transparent input sync tip clamp −1 dB bandwidth of 26 MHz typical for HD HD rejection @ 75 MHz: 48 dB typical NTSC differential gain: 0.19% NTSC differential phase: 0.76° Rail-to-rail outputs Low quiescent current: 32 mA typical Disable feature Output dc offset APPLICATIONS
Set-top boxes DVD players and recorders HDTVs Projectors Personal video recorders GENERAL DESCRIPTION
A disable feature allows for further power conservation by reducing the supply current to less than 8 μA typical when the device is not in use. FUNCTIONAL BLOCK DIAGRAM INSD1 CLAMP ×1 INSD2 CLAMP ×1 INSD3 DIS CLAMP ×1 INHD1 CLAMP ×1 INHD2 CLAMP ×1 SD ×2 OUTSD1 OUTSD2 SD ×2 OUTSD3 SD ×2 HD ×2 OUTHD1 OUTHD2 HD ×2 INHD3 CLAMP ×1 OUTHD3 HD ×2 ADA4420-6 Figure 1. 07532-001 Each channel features a transparent sync tip clamp, allowing ac coupling of the inputs without requiring dc restoration. The output drivers on the ADA4420-6 have rail-to-rail output capabilities with 6 dB gain. A built-in offset of 250 mV allows the outputs to be dc-coupled, eliminating the need for large coupling capacitors.
Analog Devices
