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MC34118L
MC34118L - Brand New UTC IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
DESCRIPTION
As a voice switched speaker-phone integrated circuit, the UTC MC34118 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 MC34118 which requiring typically 5mA may be operated from a power supply,
orit can be powered from the telephone line.
FEATURES
- 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
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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