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TEA1094A 데이터시트 PDF




NXP Semiconductors에서 제조한 전자 부품 TEA1094A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 TEA1094A 기능
기능 Hands free IC
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TEA1094A 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
DATA SHEET
TEA1094; TEA1094A
Hands free IC
Product specification
Supersedes data of 1996 Mar 11
File under Integrated Circuits, IC03
1996 Jul 15




TEA1094A pdf, 반도체, 판매, 대치품
Philips Semiconductors
Hands free IC
Product specification
TEA1094; TEA1094A
BLOCK DIAGRAM
handbook, full pagewidth
VBB
CMIC
RMIC
10
(7) VBB
(13) PD(1)
19
(15) MUTET
22
(18) MIC
TEA1094
TEA1094A
MICROPHONE CHANNEL
VI
IV
8
(6)
GND
21
GAT (17)
20
MOUT (16)
18
MICGND (14)
RGAT
to TEA106x
RTSEN
28
(24) TSEN
LOG
CTSEN
BUFF
CTENV
27
(23) TENV
BUFF
CTNOI
CRNOI
26
(22) TNOI
23
(19) RNOI
BUFF
24
(20) RENV
CRENV
BUFF
RRSEN
CRSEN
25
(21) RSEN
LOG
DUPLEX
CONTROLLER
13 mV
ATTENUATOR
LOGIC
13 mV
Vdt
16
IDT (12)
RIDT
Vref
14
SWT (11)
CSWT
VOICE
SWITCH
13
STAB (10)
RSTAB
12
SWR (9)
RSWR
RGAR
CLSP
CDLC
5
(4) GAR
6
(5) LSP
VBB
1
(1) DLC/MUTER
DYNAMIC
LIMITER
VI
2
IV
RIN1
RIN2
2
(2)
3
(3)
LOUDSPEAKER CHANNEL
VOLUME VOL
CONTROL
11
(8)
from
TEA106x
RVOL
The pin numbers given in parenthesis are for the TEA1094A.
(1) TEA1094A only.
Fig.1 Block diagram.
MGE436
1996 Jul 15
4

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TEA1094A 전자부품, 판매, 대치품
Philips Semiconductors
Hands free IC
Product specification
TEA1094; TEA1094A
handbook, full pagewidth
telephone
line
sidetone
HYBRID
TEA106x
DUPLEX
CONTROL
TEA1094
TEA1094A
acoustic
coupling
MGE438
Fig.4 Hands-free telephone set principles.
Supply: pins VBB, GND and PD
The TEA1094 and TEA1094A must be supplied with an
external stabilized voltage source between pins VBB and
GND. In the idle mode, without any signal, the internal
supply current is 3.1 mA at VBB = 5 V.
To reduce the current consumption during pulse dialling or
register recall (flash), the TEA1094A is provided with a
power-down (PD) input. When the voltage on PD is HIGH
the current consumption from VBB is 180 µA.
Microphone channel: pins MIC, GAT, MOUT, MICGND
and MUTET (see Fig.5)
The TEA1094 and TEA1094A have an asymmetrical
microphone input MIC with an input resistance of 20 k.
The gain of the input stage varies according to the mode
of the TEA1094 and TEA1094A. In the transmit mode, the
gain is at its maximum; in the receive mode, it is at its
minimum and in the idle mode, it is halfway between
maximum and minimum.
Switch-over from one mode to the other is smooth and
click-free. The output capability at pin MOUT is
20 µA (RMS).
In the transmit mode, the overall gain of the microphone
amplifier (from pins MIC to MOUT) can be adjusted from
0 dB up to 31 dB to suit specific application requirements.
The gain is proportional to the value of RGAT and equals
15.5 dB with RGAT = 30.1 k.
A capacitor must be connected in parallel with RGAT to
ensure stability of the microphone amplifier. Together with
RGAT, it also provides a first-order low-pass filter.
By applying a HIGH level on pin MUTET, the microphone
amplifier is muted and the TEA1094 and TEA1094A are
automatically forced into the receive mode.
1996 Jul 15
7

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Hands free IC

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TEA1094A

Hands free IC

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