The ISL59420EVAL1 evaluation board contains all the circuitry needed to characterize critical performance parameters of the ISL59420 single 2:1 multiplexing amplifier, over a variety of applications. The ISL59420 is a single-output, gain-selectable 2:1 MUX-amp. The unity-gain bandwidth is 400MHz for the ISL59420. It contains a common set of logic inputs for channel selection (S) threestate output control (HIZ) and an enable control input that powers down the device (EN).
The evaluation board circuit and layout is optimized for either 50Ω or 75Ω terminations, and implements a basic single 2:1 video MUX-amp. The board is supplied with 75Ω input signal terminations and a 75Ω back-termination resistor on each of the 3 outputs, making it suitable for driving video cable. The user has the option of replacing the 75Ω resistors with 50Ω resistors for other applications. The control lines contain 50Ω resistors to match the 50Ω output impedance of high speed pulse generators. Control line termination resistors are recommended for rise and fall times under 10ns to minimize unwanted transients. If DC is used for the control logic, the resistors may be removed; or the applied DC voltage can be reduced to 2.5V to reduce the dissipation in the termination resistor
- Unity-gain bandwidths are 400MHz
- Options to include an output series resistor (RS) followed by a parallel resistor (RL) capacitor (CL) network to ground
- Multiple output configurations
- Supplied with 75Ω back termination resistors
- HDTV/DTV Analog Inputs
- Video Projectors
- Computer Monitors
- Set-Top Boxes
- Security Video
- Broadcast Video Equipment
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Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.