• Product Introduction

MAX4548

Serial 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

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