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串行控制、双路4x2、无喀嗒声的音频/视频模拟交叉点开关

产品详情

主要特征

Parametric specs for Audio/Video Routing (Unbuffered)
Functions Crosspoint
Configuration 2 x 4-to-2
Interface 3-Wire
Serial
RON (Ω) (max) 80
ILEAK(OFF) (nA) (max) 10
RFLAT(ON) (Ω) (max) 5
tON (ns) (max) 900
Package/Pins SOIC (W)/28
SSOP/28
Budgetary
Price (See Notes)
4.13
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参量

Parametric specs for Audio/Video Routing (Unbuffered)
Functions Crosspoint
Configuration 2 x 4-to-2
Interface 3-Wire
Serial
RON (Ω) (max) 80
ILEAK(OFF) (nA) (max) 10
RFLAT(ON) (Ω) (max) 5
tON (ns) (max) 900
Package/Pins SOIC (W)/28
SSOP/28
Budgetary
Price (See Notes)
4.13

主要特征

  • Selectable Soft Switching Mode for Clickless Audio Operation
  • 43Ω Typical On-Resistance (±5V Supplies)
  • 5Ω Typical On-Resistance Matching Between Channels
  • 4Ω Typical On-Resistance Flatness
  • 0.014% Total Harmonic Distortion with 1kΩ Load
  • -110dB Off-Isolation at 20kHz
  • -78dB Off-Isolation at 4MHz
  • -95dB Crosstalk at 20kHz
  • -54dB Crosstalk at 4MHz
  • Serial Interface
    • 2-Wire, Fast-Mode, I²C-Compatible (MAX4550)
    • 3-Wire, SPI/QSPI/MICROWIRE-Compatible (MAX4570)
  • Four Auxiliary Outputs that Extend µP Ports
  • Single-Supply Operation: +2.7V to +5.5V
  • Dual-Supply Operation: ±2.7V to ±5.5V

应用/用途

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

描述

The MAX4550/MAX4570 serial-interface, programmable, dual 4x2 audio/video crosspoint switches are ideal for multimedia applications. Each device contains two identical crosspoint switch arrays, each with four inputs and two outputs. To improve off-isolation, use the additional crosspoint inputs SA and SB as shunts. Each output is selectively programmable for clickless or regular mode operation. A set of internal resistive voltage-dividers supplies DC bias for each output when using AC-coupled inputs. Additionally, four auxiliary outputs control additional circuitry via the MAX4550/MAX4570's 2-wire or 3-wire interface.

The MAX4550/MAX4570 feature 80Ω on-resistance, 10Ω on-resistance matching between channels, 5Ω on-resistance flatness, and 0.014% total harmonic distortion. Additionally, they feature off-isolation of at least -110dB in the audio frequency range and -78dB at 4MHz, with -95dB crosstalk in the audio frequency range and -54dB at 4MHz. The MAX4550 uses a 2-wire I²C-compatible serial interface, while the MAX4570 uses a 3-wire SPI™/QSPI™ or MICROWIRE™-compatible serial interface. These parts are available in 28-pin SSOP and wide SO packages and are tested over either the commercial (0°C to +70°C) or extended (-40°C to +85°C) operating temperature range.

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MAX4550、MAX4570:引脚配置 MAX4550、MAX4570:引脚配置 Zoom icon

Technical Docs

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在Maxim的知识库中搜索技术问题的答案

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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