Datasheet.kr   

TEA1085AT 데이터시트 PDF




NXP Semiconductors에서 제조한 전자 부품 TEA1085AT은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 TEA1085AT 자료 제공

부품번호 TEA1085AT 기능
기능 Listening-in circuit for line-powered telephone sets
제조업체 NXP Semiconductors
로고 NXP Semiconductors 로고


TEA1085AT 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 30 페이지수

미리보기를 사용할 수 없습니다

TEA1085AT 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
DATA SHEET
TEA1085; TEA1085A
Listening-in circuit for line-powered
telephone sets
Preliminary specification
File under Integrated Circuits, IC03A
March 1992




TEA1085AT pdf, 반도체, 판매, 대치품
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in
_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in
white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
VBB
line
(1)
(1)
TEA1060
(LN)
VSS 1
VBB 24
PD 19
VA 18
SREF SUP SDC
4 23
SUPPLY
PD
4
(1)
VBB
GSC1 8
2
GSC2 7
I-STABILIZATION 2
SIC 17
(1)
LOGIC GAIN
CONTROL
2
THL1 THL2 LLC DCA
14 13 12 16
LARSEN
LEVEL
LIMITER
DTI QLA
15 11
PREAMPLIFIER
LARSEN
LEVEL LIMITER
9 LAI
10 LAI+
TEA1085
TEA1085A
START
CIRCUIT
VBB
TEA1060
(MIC)
TEA1060
(MIC)
(1) To TEA1060 (SLPE).
(2) See Fig.16.
PEAK AND
CURRENT
LIMITER
23
DLC
(1)
RECEIVING
AMPLIFIER
MUTE
20 5
6
MUTE LSI1 LSI2
(2) TEA1060 (VEE)
TEA1060 (QR)
POWER
AMPLIFIER
21 QLS1
22 QLS2
MGR032
(1)
Fig.1 Block diagram.

4페이지










TEA1085AT 전자부품, 판매, 대치품
Philips Semiconductors
Listening-in circuit for line-powered
telephone sets
Preliminary specification
TEA1085; TEA1085A
Supply; SUP, SREF, VBB, VSS and VA
The line current is divided into ITR for the TEA1060 and ISUP for the TEA1085/TEA1085A.
The supply arrangement is illustrated in Fig.4.
handbook, full pagewidth Iline
ISUP
SUP
ICC R1 ITR R20
Vint
LINE
VCC
LN
TEA1060
VEE
SLPE
SREF
TEA1085
TEA1085A
R9
TR1 VBB
TR2
IBBO
IBIAS
VOLTAGE
STABILIZER
VSS
VA
C20
R38
MGR034
ITR is constant: ITR = Vint / R20; ISUP = Iline ICC ITR
Fig.4 Supply arrangement.
Where:
Vint
R20
ICC
is an internal temperature compensated
reference voltage with a typical value of
315 mV between SUP and SREF
is a resistor between SUP and SREF
is the internal current consumption of the
TEA106X (1 mA)
A practical value for R20 is 150 . This value of resistance
produces a value for ITR = 2 mA and ISUP = Iline 3 mA.
The TEA1085/TEA1085A stabilizes its own supply voltage
at VBB. Transistor TR1 provides the supplies for the
internal circuits. TR2 is used to minimize the signal
distortion on the line by momentarily diverting the input
current to VSS whenever the instantaneous value of the
voltage VSUP drops below the supply voltage VBB. VBB is
fixed to a typical value of 3.6 V but can be increased by
means of an external resistor (R38) connected between
VA and VSS or decreased by connecting this resistor
between VA and VBB. The minimum level on VBB is
restricted to 3.0 V; the level of the VBB limiter is also
affected (see application report for further information).
The supply at VBB is decoupled by a 470 µF capacitor.
The DC voltage (VSUP VSS) is determined by the
transmission IC (VLNSLPE); thus:
VSUP VSS = VLNSLPE + Vint.
The minimum DC voltage that can be applied to this input
is VBB(max) + 0.4 V.
Where: VBB(max) is the worst case supply voltage (this
depends on the setting of R38, which is connected
between VA and VSS).
The internal current consumption of the
TEA1085/TEA1085A (ISUP0) is typically 4.2 mA (where
VSUP VSS = 4.5 V, MUTE off). Thus the current available
for powering the loudspeaker is ISUP ISUP0.
The current ISUP0 consists of a bias current of 0.4 mA for
the circuitry connected to SUP and current IBB0 of 3.8 mA
which is used for the circuitry connected to VBB (see Fig.4).
March 1992
7

7페이지


구       성 총 30 페이지수
다운로드[ TEA1085AT.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
TEA1085A

Listening-in circuit for line-powered telephone sets

NXP Semiconductors
NXP Semiconductors
TEA1085AT

Listening-in circuit for line-powered telephone sets

NXP Semiconductors
NXP Semiconductors

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵