The MAX9598 dual SCART matrix routes audio and video signals between a set-top box decoder chip and two external SCART connectors under I²C control. Operating from a 3.3V supply and a 12V supply, the MAX9598 consumes 70mW during quiescent operation and 471mW during average operation when driving typical signals into typical loads. Video input detection, video load detection, and a 1.7mW low-power mode facilitate the design of low-power set-top boxes.
The MAX9598 audio section contains a buffered cross-point to route audio inputs to audio outputs. The DirectDrive™ output amplifiers create a 2VRMS full-scale audio signal biased around ground, eliminating the need for bulky output capacitors and reducing click-and-pop noise. The zero-cross detection circuitry also further reduces clicks and pops by enabling audio sources to switch only during a zero-crossing.
The MAX9598 video section contains a buffered cross-point to route video inputs to video outputs. The standard-definition video signals from the set-top box decoder chip are lowpass filtered to remove out-of-bandwidth artifacts.
The MAX9598 also supports slow-switching and fast-switching signals. An interrupt signal from the MAX9598 informs the microcontroller (µC) when the system status has changed.
The MAX9598 is available in a compact 40-pin thin QFN package and is specified over the 0°C to +70°C commercial temperature range.
关键特性
应用/使用
70mW Quiescent Power Consumption
1.7mW Low-Power Mode Consumption
0.1mW Shutdown Consumption
Clickless/Popless, DirectDrive Audio
Video Input Detection
Video Load Detection
Video Reconstruction Filter with 10MHz Passband and 52dB Attenuation at 27MHz
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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