參數(shù)資料
型號(hào)： TEA1085T
廠商： NXP SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Listening-in circuit for line-powered telephone sets
中文描述： SPECIALTY TELECOM CIRCUIT, PDSO24
封裝： PLASTIC, SO-24
文件頁(yè)數(shù)： 2/32頁(yè)
文件大小： 199K
代理商： TEA1085T
March 1992
2
Philips Semiconductors
Preliminary specification
Listening-in circuit for line-powered
telephone sets
TEA1085; TEA1085A
FEATURES
Internal supply
optimum current split-up
- low constant current (adjustable) in transmission IC
- nearly all line current available for listening-in
adjustable supply voltage
Loudspeaker amplifier
dynamic limiter providing low distortion and the
highest possible output power
SE or BTL drive for loudspeaker volume control by
potentiometer and/or logic inputs (e.g.
microcontroller drive)
fixed gain of 35 dB
Larsen level limiter
low sensitivity for own speech due to 3rd-order filter
and attack delay
adjustable voltage thresholds
Power down input
MUTE input
TEA1085/TEA1085A
- clickfree switching between listening-in mode and
standby mode
TEA1085
- toggle function
- start-up in standby condition
TEA1085A
- logic level input
GENERAL DESCRIPTION
The TEA1085 and TEA1085A are bipolar ICs which have
been designed for use in line-powered telephone sets and
provide a listening-in facility for the received line signal via
a loudspeaker. Nearly all the line current can be used for
powering the loudspeaker.
The circuits incorporate a supply circuit, loudspeaker
amplifier dynamic limiter, MUTE circuit, power-down
facility and logic inputs for gain setting. The devices also
incorporate a Larsen Level Limiter to reduce howling
effects.
The ICs are intended for use in conjunction with a
transmission circuit of the TEA1060 family.
ORDERING INFORMATION
Notes
1.
2.
SOT101-1; 1998 Jun 18.
SOT137-1; 1998 Jun 18.
EXTENDED TYPE
NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
SOT101B
(1)
SOT137A
(2)
TEA1085/TEA1085A
TEA1085T/TEA1085AT
24
24
DIL
SO24
plastic
plastic
相關(guān)PDF資料
PDF描述
TEA1093 Hands-free IC
TEA1093T Hands-free IC
TEA1094 Hands free IC
TEA1094A Hands free IC
TEA1094AM Hands free IC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TEA1088T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SMPS Battery Charger Control Circuit
TEA1093 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands-free IC
TEA1093T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands-free IC
TEA1094 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC
TEA1094A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*