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MAX4358
32 x 16 Nonblocking Video Crosspoint Switch with On-Screen Display Insertion and I/O Buffers
Part Details
- 32 x 16 Nonblocking Matrix with Buffered Inputs and Outputs
- Operates from a ±3V, ±5V, or +5V Supply
- Fast Switching (40ns) 2:1 OSD Insertion Mux
- Each Output Individually Addressable
- Individually Programmable Output Buffer Gain (AV = +1V/V or +2V/V)
- High-Impedance Output Disable for Wired-OR Connections
- 0.1dB Gain Flatness to 12MHz
- Minimum -62dB Crosstalk, -110dB Isolation at 6MHz
- 0.05%/0.1° Differential Gain/Differential Phase Error
- Low 195mW Power Consumption (0.38mW per point)
The MAX4358 is a 32 x 16 highly integrated video crosspoint switch matrix with input and output buffers and On-Screen Display (OSD) Insertion. This device operates from dual ±3V to ±5V supplies or from a single +5V supply. Digital logic is supplied from an independent single +2.7V to +5.5V supply. Individual outputs can be switched between an input video signal source and OSD information through an internal, dedicated fast 2:1 mux (40ns switching times) located before the output buffer. All inputs and outputs are buffered, with all outputs able to drive standard 75Ω reverse-terminated video loads.
The switch matrix configuration and output buffer gain are programmed through an SPI™/QSPI™-compatible, three-wire serial interface and initialized with a single update signal. The unique serial interface operates in two modes facilitating both fast updates and initialization. On power-up, all outputs are initialized in the disabled state to avoid output conflicts in large-array configurations.
Superior flexibility, high integration, and space-saving packaging make this nonblocking switch matrix ideal for routing video signals in security and video-on-demand systems.
The MAX4358 is available in a 144-pin TQFP package and specified over an extended -40°C to +85°C temperature range. The MAX4358 evaluation kit is available to speed designs.
Applications
- Security Systems
- Video Routing and Switching Systems
- Video-on-Demand Systems
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