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串行控制、三组3x2音频/视频交叉点开关

产品详情

主要特征

Parametric specs for Audio/Video Routing (Unbuffered)
Functions Crosspoint
Configuration 3 x 3-to-2
Interface 3-Wire
Serial
RON (Ω) (max) 35
ILEAK(OFF) (nA) (max) 10
RFLAT(ON) (Ω) (max) 5
tON (ns) (max) 400
Package/Pins SSOP/36
Budgetary
Price (See Notes)
6.37
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参量

Parametric specs for Audio/Video Routing (Unbuffered)
Functions Crosspoint
Configuration 3 x 3-to-2
Interface 3-Wire
Serial
RON (Ω) (max) 35
ILEAK(OFF) (nA) (max) 10
RFLAT(ON) (Ω) (max) 5
tON (ns) (max) 400
Package/Pins SSOP/36
Budgetary
Price (See Notes)
6.37

主要特征

  • 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/用途

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

描述

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.

简化框图

MAX4548、MAX4549:引脚配置 MAX4548、MAX4549:引脚配置 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心