Select site:
- English
TEA1114A
Datasheet
General description
The TEA1114A is a bipolar integrated circuit that performs all speech and line interface functions required in fully electronic telephone sets. It performs electronic switching between speech and dialling. The IC operates at a line voltage down to 1.45 V DC (with reduced performance) to facilitate the use of telephone sets connected in parallel.
When the line current is high enough, a fixed amount of current is derived from the LN pin in order to create a strong supply point at pin VDD. The voltage at pin VDD is regulated to 3.3 V to supply peripherals such as dialler, LCD module and microcontroller.
Features
- Low DC line voltage; operates down to 1.45 V (excluding voltage drop over external polarity guard)
- Line voltage regulator with adjustable DC voltage
- 3.3 V regulated strong supply point for peripheral circuits compatible with:
- Speech mode
- Ringer mode
- Trickle mode. - Transmit stage with:
- Microphone amplifier with symmetrical high impedance inputs
- DTMF amplifier with confidence tone on receive output. - Receive stage with:
- Receive amplifier with asymmetrical output
- Earpiece amplifier with adjustable gain (and gain boost facility) for all types of earpieces. - MUTE input for pulse or DTMF dialling
- AGC line loss compensation for microphone and receive amplifiers.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| TEA1114AT/C3 | 9352 761 49518 | Volume production | SOT109-1
(SO16) | Reel Dry Pack, SMD, 13" | Standard Marking | TEA1114AT/C3
| week 19, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| TEA1114AT/C3 | 9352 761 49518 | not available |
Applications
- Line powered telephone sets with LCD module
- Cordless telephones
- Fax machines
- Answering machines.
Disclaimer
The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.
The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.
As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.
- http://www.philips.semiconductors.com use http://www.nxp.com
- http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
- sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)
The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-
If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.