參數(shù)資料
型號(hào)： 935263380518
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 無(wú)繩電話/電話
英文描述： TELEPHONE SPEECH CKT, PDSO16
封裝： PLASTIC, SOT-109, SO-16
文件頁(yè)數(shù)： 12/30頁(yè)
文件大?。?/td> 218K
代理商： 935263380518
2000 Mar 21
2
Philips Semiconductors
Product specication
Low voltage telephone transmission circuit with
dialler interface and regulated strong supply
TEA1114A
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.
APPLICATIONS
Line powered telephone sets with LCD module
Cordless telephones
Fax machines
Answering machines.
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.
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1114A
DIP16
plastic dual in-line package; 16 leads (300 mil)
SOT38-4
TEA1114AT
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
TEA1114AUH
bare die; on foil
相關(guān)PDF資料
PDF描述
935263380512 TELEPHONE SPEECH CKT, PDSO16
935263379112 TELEPHONE SPEECH CKT, PDIP16
935263435118 CBT/FST/QS/5C/B SERIES, 20 1-BIT DRIVER, TRUE OUTPUT, PDSO48
935263449118 SPEAKER PHONE CIRCUIT, PDSO40
935263449112 SPEAKER PHONE CIRCUIT, PDSO40
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