MAX11508, MAX11509 低成本、3通道、HD/PS/SD/BP视频滤波器，带有缓冲器

MAX11508, MAX11509 概述

The MAX11508/MAX11509 integrated 3-channel video filters for high-definition (HD), progressive-scan (PS), standard-definition (SD), and bypass (BP) video include an output buffer with +6dB gain and are ideal for digital video disc (DVD) players, set-top box (STB) receivers, high-definition television (HDTV), digital video recorders (DVRs), and similar devices.

The MAX11508/MAX11509 video inputs feature a transparent clamp compatible with AC- and DC-coupled input signals and allow DAC outputs to be directly coupled, eliminating the need for bulky coupling capacitors. The filter bandwidths are selectable to HD, PS, and SD. A BP mode is provided for 1080p and high-bandwidth RGB signals. Selectable input bias circuitry on 2 filter channels offers simple connection to bipolar video signals such as C, Pb, and Pr.

The MAX11508 filters provide -3dB bandwidths of 9MHz (SD), 16MHz (PS), 33MHz (HD), and 60MHz (BP). The MAX11509 filters provide -3dB bandwidths of 10MHz (SD), 17MHz (PS), 34MHz (HD), and 60MHz (BP).

Each channel includes an output buffer with +6dB gain that provides a full 2V_P-Pvideo signal into a 150Ω video load. The buffers drive either AC- or DC-coupled loads and assure a blanking level of below 1V after the backmatch resistor. The shutdown mode provided reduces device current to 1µA (typ).

The MAX11508 offers a flat passband and the MAX11509 features +0.8dB peaking to compensate for DAC rolloff. The MAX11508/MAX11509 operate from a 5V power supply and operate over the upper commercial (0°C to +85°C) temperature range. The parts are offered in the 14-pin TSSOP package.

MAX11508/MAX11509 pdf datasheet

MAX11508, MAX11509 关键特性

Three Selectable 6th-Order 9MHz/16MHz/33MHz (SD/PS/HD) Filters

Bypass Mode for High Bandwidth Signals

Transparent Input Clamp

Output Buffers Drive a Standard 150Ω Video Load

±12kV HBM ESD Protection on Outputs

AC- or DC-Coupled Inputs

AC- or DC-Coupled Outputs

+0.8dB Peaking Passband Response (MAX11509) in SD, PS, and HD Modes

Single +5V Power Supply

Lead-Free, 14-Pin TSSOP Package

MAX11508, MAX11509 应用/使用

DVD播放器
DVR
HD录像机
HDTV
个人录像机
视频点播

MAX11508, MAX11509 应用电路

Typical Operating Circuit