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  • MC34118G-S28-R

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Package/Case : SOP28
Product Categories : Integrated Circuits (ICs)
Datasheet: MC34118G-S28-R Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 452000


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MC34118G-S28-R Product Details

As a voice switched speaker-phone integrated circuit, the UTC MC34118G-S28-R includes the necessary amplifiers, attenuators, level detectors and control algorithm. To form the UTC MC34118’s internal circuit, there is an internal microphone amplifier with adjustable gain and mute control, internal
transmit and Receive attenuators (operate in a complementary manner), level detectors at both input and output of both attenuators,and background noise monitors for both the transmit and receive channels. The dial tone can be pretended from being attenuated by the receive background noise monitor circuit by a dial tone detector. There are also two line driver amplifiers which can be used to form a hybrid network in conjunction with an external coupling transformer. A high-pass filter can be used for otherfiltering functions, and especially to filter out 60Hz noise in the receive channel. The UTC MC34118G-S28-R which requiring typically 5mA may be operated from a power supply, orit can be powered from the telephone line.



* Attenuator gain range: 52dB (between Transmit and Receive)
* For line-powered applications : 3~6.5V low voltage operation 
* For improved sensitivity :4-point signal sensing
* For Transmit and Receive paths: background noise monitors 
* External resistors set microphone amplifier gain 
* Mute function included
* Chip disable: active or standby operation
* During dial tone presence: dial tone detector to inhibit receive idle mode

Technical Parameters

  • Manufacturer
  • UTC
  • Packing
  • Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
  • RoHs Status
  • Lead free / RoHS Compliant
  • Package/Case
  • SOP28

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Estimated Delivery Time: Jun 28 - Jul 03 days (choose Expedited at checkout).

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  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
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  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
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  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

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


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

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.


  • Step1:Product

    Step1: Products

  • 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.

Jotrin ESD packing


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

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.


Q: How does Jotrin guarantee that MC34118G-S28-R is the original manufacturer or agent of UTC?
We have a professional business development department to strictly test and verify the qualifications of UTC original manufacturers and agents. All UTC suppliers must pass the qualification review before they can publish their MC34118G-S28-R devices; we pay more attention to the channels and quality of MC34118G-S28-R products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MC34118G-S28-R chips? Including UTC original factory information, application, MC34118G-S28-R pictures?
You can use Jotrin's intelligent search engine, or filter by Integrated Circuits (ICs) category, or find it through UNISONIC TECHNOLOGIES CO.,LTD Information page.
Q: Are the UTC's MC34118G-S28-R price and stock displayed on the platform accurate?
The UTC's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for MC34118G-S28-R, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of MC34118G-S28-R?
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 MC34118GS28R we delivered, we will accept the replacement or return of the MC34118G-S28-R only when all of the below conditions are fulfilled:
(1)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 MC34118G-S28-R.
(3)The MC34118G-S28-R 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, such as MC34118G-S28-R datasheet pdf, MC34118 pin diagram?
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Unisonic Technologies is an IDM Globalization International Group of integrated circuits that designs, manufactures and sells a wide range of ICs and discrete devices. It has branches in Hong Kong, Korea, Singapore and North America. In order to provide customers with complete solutions and competit...

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