IC U3665

IC U3665

Function of IC U3665

• Performs a 64 µs delay on baseband color‑difference signals (R–Y and B–Y).
• Contains two internal delay lines for separate processing of the two color‑difference channels.
• On‑chip postfilters with Bessel characteristics remove need for many external components.
• Combining delayed and non‑delayed signals helps improve color decoding and reduce interference.

🛠️ Key Features of IC U3665

✔ One‑line delay (≈ 64 µs) for color signals.
✔ Adjustment‑free operation — no external VCO components needed.
✔ Handles both positive and negative color difference inputs.
✔ Line‑locked by sandcastle pulse (sync timing).
✔ No SECAM color carrier crosstalk (avoids diaphoty).
✔ Comb‑filtering for NTSC signals and phase correction for PAL.

⚙️ Typical Electrical Specs

(from datasheet data)

📍 Typical Application of IC U3665

👉 Used mainly in TV front‑end video processing, where color signals need a precise one‑line delay for:

• Comb filtering
• Noise reduction
• PAL/NTSC/SECAM decoding

No external delay line components needed due to the internal switched‑capacitor architecture.

•  confirm the staPleasetus of a product before making a payment, follow these steps:

  1. Review the Product Information: Carefully read through the product details on the website or listing. This includes the product name, description, price, and any specifications or features. Make sure it matches what you intend to purchase.
  2. Check Availability: Verify if the product is in stock and available for purchase. If it’s listed as “out of stock” or “temporarily unavailable,” it may not be available for immediate purchase.
  3. Contact Customer Support: If you have any doubts or specific questions about the product’s availability, quality, or delivery time, it’s a good idea to contact the seller’s customer support or the online store’s customer service. They can provide you with the most up-to-date information.
  4. Read Reviews: Look for customer reviews and ratings, if available. This can give you insights into the product’s quality and the seller’s reliability.
  5. Check Shipping and Delivery Times: If the product is available, check the estimated shipping and delivery times. Ensure they meet your requirements, especially if you need the product by a specific date.
  6. Payment and Receipt Confirmation: When you’re ready to make a payment, review your order details before confirming the purchase. Double-check the product, quantity, price, and any additional fees. Ensure that the payment page is secure (look for the “https” in the URL).
  7. Save Confirmation Emails: After making the payment, save and confirm any order or payment confirmation emails. These can serve as proof of your transaction.
  8. Payment Method Security: Use secure payment methods, such as credit cards or trusted online payment systems. Be cautious of providing personal or financial information over unsecured or suspicious websites.
  9. Return and Refund Policy: Familiarize yourself with the seller’s or online store’s return and refund policy. This information is crucial in case you need to return the product or request a refund.
  10. Keep Records: Maintain records of all communication and transactions related to the purchase. This includes emails, receipts, and order confirmations.

  informed about the product’s status and can make a secure and informed payment.

  Feel Free to contact us: https://sg966.com/contact-2/

  Check out more similar products: Similar Products