NXP Semiconductors TEA1113
The TEA1113 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 1.6 V DC (with reduced performance) to facilitate the use of telephone sets connected in parallel.| Part No. | TEA1113 |
|---|---|
| Datasheet | TEA1113 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Low voltage versatile telephone transmission |
| Buy | Stock & Price |
FEATURES
● Low DC line voltage; operates down to 1.6 V (excluding polarity guard)● Voltage regulator with adjustable DC voltage
● Provides a supply for external circuits
● Symmetrical high impedance inputs (64 kΩ) for dynamic, magnetic or piezo-electric microphones
● Asymmetrical high impedance input (32 kΩ) for electret microphones
● DTMF input with confidence tone
● MUTE input for pulse or DTMF dialling
● Receiving amplifier for dynamic, magnetic or piezo-electric earpieces
● Dynamic limitation in the transmit direction to prevent distortion of the transmit line and sidetone signals
● AGC line loss compensation for microphone and earpiece amplifiers
● LED on-hook/off-hook status indication
● Microphone mute function available with switch.
GENERAL DESCRIPTION
APPLICATION TEA1113● Line powered telephone sets, cordless telephones, fax machines and answering machines. A current (proportional to the line current and internally limited to 19.5 mA) is available to drive an LED which indicates the on-hook/off-hook status.
