This document introduces ADA4420-6, a low-cost 6-channel HD/SD video filter. The filter features sixth-order filters, transparent input sync tip clamp, -1 dB bandwidth of 26 MHz, HD rejection @ 75 MHz: 48 dB, NTSC differential gain: 0.19%, NTSC differential phase: 0.76°, rail-to-rail outputs, low quiescent current: 32 mA, disable feature and output dc offset. The product is mainly used in set-top boxes, DVD players and recorders, HDTVs, projectors and personal video recorders.
The ADA4420-6 is a six‑channel video filter designed for consumer applications such as set‑top boxes, DVD players, HDTVs and projectors. It provides independent sixth‑order Butterworth filters for both standard‑definition (CVBS) and high‑definition (YPbPr or RGB) signals and operates from a single 5 V supply.
Key features include rail‑to‑rail output drivers with 6 dB gain, a built‑in 250 mV offset to eliminate large coupling capacitors, a low quiescent current of 32 mA (active) and a disable mode that reduces supply current to less than 8 µA. The device is offered in a 16‑lead QSOP package and is rated for an industrial temperature range of –40 °C to +85 °C.
| Supply Voltage | 4.75 to 5.25 V |
|---|---|
| Quiescent Supply Current (active) | 32 mA typical |
| Quiescent Supply Current (disabled) | 7–13 pA |
| -1 dB Bandwidth (HD channel) | 26 MHz |
| -3 dB Bandwidth (HD channel) | 27–31 MHz |
| Out‑of‑Band Rejection (HD, 75 MHz) | 48 dB typical |
| Crosstalk (HD, 1 MHz) | -68 dB |
| Signal‑to‑Noise Ratio (HD) | 66 dB |
| Package Type | 16‑lead QSOP |
| Operating Temperature Range | –40 °C to +85 °C |
It operates from 4.75 V to 5.25 V.
When disabled, the supply current drops to between 7 pA and 13 pA.
The HD channel has a -1 dB bandwidth of 26 MHz.
It is offered in a 16‑lead QSOP (shrink small outline package).