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TEA1094ATのメーカーはNXP Semiconductorsです、この部品の機能は「Hands free IC」です。 |
部品番号 | TEA1094AT |
| |
部品説明 | Hands free IC | ||
メーカ | NXP Semiconductors | ||
ロゴ | |||
このページの下部にプレビューとTEA1094ATダウンロード(pdfファイル)リンクがあります。 Total 28 pages
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
1 Page Philips Semiconductors
Hands free IC
Product specification
TEA1094; TEA1094A
QUICK REFERENCE DATA
VBB = 5 V; VGND = 0 V; f = 1 kHz; Tamb = 25 °C; MUTET = LOW; PD = LOW (TEA1094A only); RL = 50 Ω; RVOL = 0 Ω;
measured in test circuit of Fig.12; unless otherwise specified.
SYMBOL
VBB
IBB
Gvtx
∆Gvtxr
Gvrx
∆Gvrxr
VO(p-p)
SWRA
∆SWRA
Tamb
PARAMETER
CONDITIONS
supply voltage
current consumption from pin VBB
voltage gain from pin MIC to
pin MOUT in transmit mode
voltage gain adjustment with RGAT
voltage gain in receive mode; the
difference between RIN1 and RIN2
to LSP
voltage gain adjustment with RGAR
output voltage (peak-to-peak value)
VMIC = 1 mV (RMS);
RGAT = 30.1 kΩ
VRIN = 20 mV (RMS);
RGAR = 66.5 kΩ;
RL = 50 Ω
VRIN = 150 mV (RMS);
RGAR = 374 kΩ;
RL = 33 Ω; VBB = 9.0 V;
note 1
switching range
switching range adjustment with RSWR
referenced to RSWR = 365 kΩ
operating ambient temperature
MIN.
3.3
−
13
TYP.
−
3.1
15.5
MAX. UNIT
12.0 V
4.4 mA
18 dB
−15.5 −
16 18.5
+15.5 dB
21 dB
−18.5 −
− 7.5
+14.5 dB
−V
− 40
−40 −
−25 −
− dB
+12 dB
+75 °C
Note
1. Corresponds to 200 mW output power.
1996 Jul 15
3
3Pages Philips Semiconductors
Hands free IC
Product specification
TEA1094; TEA1094A
handbook, halfpage
DLC/MUTER 1
28 TSEN
RIN1 2
27 TENV
RIN2 3
26 TNOI
n.c. 4
25 RSEN
GAR 5
24 RENV
LSP 6
23 RNOI
n.c. 7
GND 8
22 MIC
TEA1094
21 GAT
n.c. 9
VBB 10
VOL 11
20 MOUT
19 MUTET
18 MICGND
SWR 12
17 n.c.
STAB 13
16 IDT
SWT 14
15 n.c.
MGE434
handbook, halfpage
DLC/MUTER 1
24 TSEN
RIN1 2
23 TENV
RIN2 3
22 TNOI
GAR 4
21 RSEN
LSP 5
20 RENV
GND 6
19 RNOI
TEA1094A
VBB 7
18 MIC
VOL 8
17 GAT
SWR 9
16 MOUT
STAB 10
15 MUTET
SWT 11
14 MICGND
IDT 12
13 PD
MGE435
Fig.2 Pin configuration (TEA1094).
Fig.3 Pin configuration (TEA1094A).
FUNCTIONAL DESCRIPTION
General
The values given in the functional description are typical
values unless otherwise specified.
A principle diagram of the TEA106X is shown on the left
side of Fig.4. The TEA106X is a transmission circuit of the
TEA1060 family intended for hand-set operation.
It incorporates a receiving amplifier for the earpiece, a
transmit amplifier for the microphone and a hybrid.
For more details on the TEA1060 family, please refer to
“data Handbook IC03”. The right side of Fig.4 shows a
principle diagram of the TEA1094 and TEA1094A,
hands-free add-on circuits with a microphone amplifier, a
loudspeaker amplifier and a duplex controller.
As can be seen from Fig.4, a loop is formed via the
sidetone network in the transmission circuit and the
acoustic coupling between loudspeaker and microphone
of the hands-free circuit. When this loop gain is greater
than 1, howling is introduced. In a full duplex application,
this would be the case.
The loop-gain has to be much lower than 1 and therefore
has to be decreased to avoid howling. This is achieved by
the duplex controller. The duplex controller of the
TEA1094 and TEA1094A detects which channel has the
‘largest’ signal and then controls the gain of the
microphone amplifier and the loudspeaker amplifier so that
the sum of the gains remains constant.
As a result, the circuit can be in three stable modes:
1. Transmit mode (Tx mode).
The gain of the microphone amplifier is at its maximum
and the gain of the loudspeaker amplifier is at its
minimum.
2. Receive mode (Rx mode).
The gain of the loudspeaker amplifier is at its
maximum and the gain of the microphone amplifier is
at its minimum.
3. Idle mode.
The gain of the amplifiers is halfway between their
maximum and minimum value.
The difference between the maximum gain and minimum
gain is called the switching range.
1996 Jul 15
6
6 Page | |||
ページ | 合計 : 28 ページ | ||
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部品番号 | 部品説明 | メーカ |
TEA1094A | Hands free IC | NXP Semiconductors |
TEA1094AM | Hands free IC | NXP Semiconductors |
TEA1094AT | Hands free IC | NXP Semiconductors |