Products > Integrated Circuits (ICs) > Interface ICs > ZL38002QDG1
ZL38002QDG1 TQFP48
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ZL38002QDG1

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Low-Voltage Acoustic Echo Canceller With Noise Reduction

Manufacturer :
Microchip Technology, Inc
Package/Case :
TQFP48
Product Categories :
Interface ICs
Datasheet:
ZL38002QDG1 PDF
RoHs Status:
Lead free / RoHS Compliant
In-stock:
6690

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ZL38002QDG1 Product Details

The ZL38002QDG1 device is comprised of an acoustic echo canceller and the necessary control functions for operation. The ZL38002QDG1 guarantees clear signal transmission in both transmit and receive audio path directions to ensure reliable voice communication, even when low level signals are provided. The ZL38002QDG1 does not use variable attenuators during double-talk or single-talk periods of speech, as do many other acoustic echo cancellers for speakerphones. Instead, the ZL38002QDG1 provides high performance full-duplex operation similar to network echo cancellers. This results in users experiencing clear speech and uninterrupted background signals during the conversation and prevents subjective sound quality problems associated with "noise gating" or "noise contrasting".The ZL38002QDG1 uses an advanced adaptive filter algorithm that is double-talk stable, which means that convergence takes place even while both parties are talking. This algorithm allows continual tracking of changes in the echo path, regardless of double-talk, as long as a reference signal is available for the echo canceller.The echo tail cancellation capability of the acoustic echo canceller has been sized appropriately (112 ms) to cancel echo in an average sized office with a reverberation time of less than 112 ms.Simplified Block DiagramTypical ApplicationsHands free car kitsFull duplex speaker-phone for digital telephoneEcho cancellation for video conferencingSecurity systemsIntercom systems (door entry, elevator, and restaurant drive-through)

Feature

  • 112 ms acoustic echo canceller
  • Up to 12 dB of noise reduction
  • Works with low cost voice codec. ITU-T G.711 or signed mag µ/A-Law, or linear 2's compliment
  • Advanced NLP design - full duplex speech with no switched loss on audio paths
  • Fast re-convergence time: tracks changing echo environment quickly
  • Adaptation algorithm converges even during Double-Talk
  • Designed for exceptional performance in high background noise environments
  • Howling prevention stops uncontrolled oscillation in high loop gain conditions
  • User gain control provided for speaker path (-24 dB to +21 dB in 3 dB steps)
  • Adjustable gain pads from -24 dB to +21 dB at Xin, Sin and Sout to compensate for different system requirements
  • AGC on speaker path
  • Handles up to -6 dB acoustic echo return loss (with the appropriate gain pad settings)
  • Idle channel noise suppression
  • Each port may operate independently in companded format or linear format
  • Bootloadable for future factory software upgrades

Applications

  • Hands free car kits
  • Full duplex speaker-phone for digital telephone
  • Echo cancellation for video conferencing
  • Security systems
  • Intercom systems (door entry, elevator, and restaurant drive-through)

ZL38002QDG1 Block Diagram
(Picture: Diagram)

Technical Parameters

Function Echo Cancellation Power (Watts) 90mW
Interface Serial Operating Temperature -40??C ~ 85??C
Number of Circuits 1 Mounting Type Surface Mount
Voltage Supply 2.7V ~ 3.6V Package / Case 48-TQFP
Current Supply 20mA Supplier Device Package 48-TQFP (7x7)

ZL38002QDG1 Documents

ZL38002QDG1 Related Products

Ratings and Reviews (1)

  • 5 / 5
  • 5 Stars 100%
  • 4 Stars 0%
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  • 2 Stars 0%
  • 1 Stars 0%
  • **lex De***
    2020-01-18

    Great Seller!I Recommend!

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Estimated Delivery Time: Dec 03 - Dec 08 days (choose Expedited at checkout).

Shipping & Payment

Shipping

Shipping Type Ship Fee Lead Time
DHL

$20.00-$40.00 (0.50 KG)

2-5 days
Fedex

$20.00-$40.00 (0.50 KG)

3-7 days
UPS

$20.00-$45.00 (0.50 KG)

2-5 days
TNT

$25.00-$65.00 (0.50 KG)

2-5 days
EMS

$25.00-$45.00 (0.50 KG)

5-14 days
REGISTERED AIR MAIL

$2.00-$3.00 (0.10 KG)

7-30 days

Processing Time:Shipping fee depend on different zone and country.


Payment

Terms of payment Hand Fee Payment Site
Wire Transfer

charge US$30.00 banking fee.

Paypal

charge 4.0% service fee.

https://www.paypal.com/
Credit Card

charge 3.5% service fee.

Western Union

charge US$0.00 banking fee.

https://www.westernunion.com/
Money Gram

charge US$0.00 banking fee.

http://global.moneygram.com/

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.

Packing

  • Step1:Product

    Step1:Product

  • Step2:Vacuum packaging

    Step2:Vacuum packaging

  • Step3:Anti-static bag

    Step3:Anti-static bag

  • Step4:Individual packaging

    Step4:Individual packaging

  • Step5:Packaging boxes

    Step5:Packaging boxes

  • Step6:bar-code shipping tag

    Step6:bar-code shipping tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Guarantees

1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

FAQ:

Q: What are the advantages of buying from Jotrin?
Jotrin is your second procurement department of the electronic components. The platform has supported by over 1000 original factories and authorized agents, over 10 years of experience in the electronic components area. Jotrin is aiming to help these manufacturers, EMS, PCBA clients offer a whole BOM solution with the assistant of their professional BOM team and Intelligent BOM software. We can help you:
1. Do the cost down for your current regular orders.
2. Decrease your suppliers' management costs and suppliers' qty.
3. Improve your efficiency, we can offer the whole BOM one-stop supply chain service.
Q: How can Jotrin guarantee to be the original manufacturers or the agents?
We have a professional business development department to strictly examine and verify the qualifications of the original manufacturers and the agents. All the suppliers must pass the qualification examination before putting their materials on the shelves; We pay more attention to the channel and quality of products than any other customers, we are strict with supplier audit, you can rest assured that choice.
Q: What are the business hours of Jotrin?
Although we accept quotation requests and orders anytime 24 hours a day regardless of business days and hours, we provide quotations and process orders during business time.
Business Hours: Monday - Friday 9:00am - 9:00pm (GMT+8)
Q: Is the inventory and price seen on the platform accurate?
Inventory fluidity big, unable to update in time, it will be updated periodically within 24 hours. After placing the order, it is suggested to confirm the order with the supplier or the online customer service of Jotrin before paying.
Q: Can I place an order offline?
Yes. We accept offline orders.
You can contact our customer service representatives to help you customize your requirements.
If you'd like to submit your purchase orders via email, please send us a note to sales@jotrin.com. One of our customer service representatives will help you.
Q: What forms of payment can I use in Jotrin?
TT Bank, Western Union, Paypal, and Escrow is all acceptable.
Q: How is the shipping arranged?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail. No shipment handling charges be included.
Q: How can I track my package?
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status of your order and its tracking number, if applicable. When the tracking numbers are present, you can click on the link and it will take you directly to the carriers' website so that you can track your order. Note: It may take up to 24 hours before carriers will display tracking information.
Q: When can I receive my package?
In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the product we delivered, we will accept the replacement or return of the product only when all of the below conditions are fulfilled: (1)There are any problems with the product we delivered, such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of the product.
(3)The product is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy
Q: How to contact us and get support?
Need any After-Sales service, please feel free contact us: sales@jotrin.com

MICROCHIP

Microchip
Microchip Technology Inc. is a leading manufacturer of microcontroller and analog products, providing low-risk product development, lower total system cost, and faster time to market for thousands of...
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