MAX4549

所属类别：多路模拟开关
产品名称：串行控制，三组3x2的音频/视频交叉点开关
厂商：MAXIM
生产批号：12+
封装：SOP
库存状态：有库存
库存量：30000
最低订购量：1
详细资料：

Product Introduction

MAX4549Serial control, three sets of 3x2 audio/video crossover switches

overview

MAX4548/MAX4549 serial interface, programmable, triple 3x2 audio/video crossover switches are ideal for multimedia applications. These devices include three crosspoint switching matrices, each with three inputs and two outputs. To improve shutdown isolation, each switch matrix has a shunt input and each output is programmable for selective noise-free or regular mode operation. An optional set of internal resistor dividers provides DC bias for each output when using AC-coupled inputs. To improve crosstalk, the voltage divider includes four external access bypass points.

MAX4548/MAX4549 features a matching resistance between 35Ω maximum on-resistance, channel, 5Ω resistor flatness and 0.07% total harmonic distortion (THD) 7Ω. In addition, they have -72 dB isolation at 20kHz at 10MHz - 85dB and -55dB at 20kHz and -85dB crosstalk at 10MHz. MAX4548 uses a 2-wire I²-compatible serial interface, while MAX4549 uses a 3-wire SPI™/QSPI™/MICROWIRE™ compatible serial interface. The devices are available in a 36-pin SSOP package and are specified as an extended (-40°C to +85°C) operating range.

Key features:

Soft switches select the "click" audio mode of operation
22 Ω resistor (+5 V supply) typical
5Ω typical on-resistance channels
The 2Ω typical on-resistance is flat
Audio performance
- Isolation at 20kHz-85dB
- Crosstalk at 20kHz-85dB
- 0.07% THD 600Ω load
Video performance
- -72 dB off isolation at 10MHz
- Provides -55dB crosstalk at 10MHz
Serial interface
- 2-wire I²C compatible (MAX4548)
- 3-wire SPI/QSPI/MICROWIRE compatible (MAX4549)
Operates from a single supply from +2.7 V to +5.5 V

Application/Use

High-end audio system
Computer multimedia board
Security system
Stb
Video conferencing system
Pin configuration

This model is still in mass production, the spot quantity is not large, the original factory needs to be ordered, please contact Microchip Centennial Electronic Technology (Shenzhen) Co., Ltd. for specific delivery date and unit price

ICs related to MAX4549 include:

Model	Manufacturers	lot number	encapsulation	illustrate
MAX4549	MAXIM	12+	SOP	Serial control, three sets of 3x2 audio/video crossover switches
LM4549	National	03+	QFP	Brand new original
2sc4549	NEC	04+	TO-220	Brand new original

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