MAX4548数据手册集成电路（IC）的模拟开关-特殊用途规格书PDF

描述 Description

The MAX4548/MAX4549 serial-interface, programmable, triple 3x2 audio/video crosspoint switches are ideal for multimedia applications. The devices include three crosspoint switch matrices, each containing three inputs and two outputs. To improve off-isolation, each switch matrix has a shunt input and each output is selectively programmable for clickless or regular-mode operation. A selectable set of internal resistive voltage dividers supplies DC bias for each output when using AC-coupled inputs. To improve crosstalk, the voltage dividers include four externally accessible bypass points.
The MAX4548/MAX4549 feature 35Ω max on-resistance, 7Ω on-resistance matching between channels, 5Ω on-resistance flatness, and 0.07% total harmonic distortion (THD). Additionally, they feature off-isolation of -85dB at 20kHz and -72dB at 10MHz, with crosstalk of -85dB at 20kHz and -55dB at 10MHz. The MAX4548 uses a 2-wire I²-compatible serial interface, while the MAX4549 uses a 3-wire SPI™/QSPI™/MICROWIRE™-compatible serial interface. These parts are available in 36-pin SSOP packages and are specified for the extended (-40°C to +85°C) operating range.

特性 Features

• Selectable Soft-Switching Mode for \"Clickless\" Audio Operation
• 22Ω Typical On-Resistance (+5V Supply)
• 5Ω Typical On-Resistance Matching Between Channels
• 2Ω Typical On-Resistance Flatness
• Audio Performance
• -85dB Off-Isolation at 20kHz
• -85dB Crosstalk at 20kHz
• 0.07% THD with 600Ω Load
• Video Performance
• -72dB Off-Isolation at 10MHz
• -55dB Crosstalk at 10MHz
• Serial Interface
• 2-Wire I²C-Compatible (MAX4548)
• 3-Wire SPI/QSPI/MICROWIRE-Compatible (MAX4549)
• Single-Supply Operation from +2.7V to +5.5V

应用 Application

• 高端音频系统
• PC多媒体板
• 安全系统
• 机顶盒
• 视频会议系统

简介

MAX4548属于集成电路（IC）的模拟开关-特殊用途。由制造生产的MAX4548模拟开关 - 特殊用途特殊用途模拟开关通过固态设备路由模拟信号。该系列产品的与众不同之处在于，这些模拟开关针对特定的应用，因此具有通用模拟开关通常所没有的独特功能。