Description:Support is limited to customers who have already adopted these products.The ISL59920, ISL59921, ISL59922, and ISL59923 are triple analog delay lines that provide skew compensation between three high-speed signals. These parts are ideal for compensating for the skew introduced by a typical CAT-5, CAT-6 or CAT-7 cable (with differing electrical lengths on each twisted pair) when transmitting analog video. Using a simple serial interface, the ISL59920, ISL59921, ISL59922, and ISL59923’s delays are programmable
A good PCB layout for the ISL59920IRZ-T7 should consider the following: keep the input and output traces short and separate, use a solid ground plane, and place decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure the device operates within the specified temperature range, provide adequate heat sinking, use a thermal interface material (TIM) between the device and the heat sink, and avoid blocking airflow around the device. The maximum junction temperature (TJ) should not exceed 150°C.
The recommended input capacitor value is 10uF to 22uF, and the type should be a low-ESR ceramic capacitor (X5R or X7R dielectric) with a voltage rating of at least 25V. This ensures stable operation and minimizes input voltage ripple.
To troubleshoot output voltage instability or oscillations, check the input voltage, output load, and PCB layout. Ensure the input voltage is within the specified range, the output load is within the recommended range, and the PCB layout is optimized for the device. Also, verify that the output capacitor value and type are correct, and the feedback network is properly configured.
The recommended output capacitor value is 10uF to 47uF, and the type should be a low-ESR ceramic capacitor (X5R or X7R dielectric) with a voltage rating of at least 10V. This ensures stable output voltage and minimizes output voltage ripple.
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ISL59920IRZ-T7 Overview
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