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參數(shù)資料
| 型號： | TEA1093T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Hands-free IC |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO28 |
| 封裝： | 7.50 MM, PLASTIC, SOT-136-1, MS-013AE, SO-28 |
| 文件頁數(shù)： | 8/28頁 |
| 文件大?。?/td> | 208K |
| 代理商： | TEA1093T |
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1996 Feb 09
8
Philips Semiconductors
Product specification
Hands-free IC
TEA1093
Fig.5 V
BB
as a function of R
VA
.
handbook, halfpage
2
6
8
MGD220
4
VBB
(V)
RVA (k
)
1
10
10
2
10
3
3.6 V without RVA
RVA(VA-GND)
RVA(VA-VBB)
Microphone channel: pin MIC, GAT, MOUT, MICGND
and MUTET
The TEA1093 has 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 TEA1093. 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
μ
A (RMS).
In the transmit mode, the overall gain of the microphone
amplifier (from pin MIC to MOUT) can be adjusted from
5 dB up to 25 dB to suit specific application requirements.
The gain is proportional to the value of R
GAT
and equals
15 dB typical with R
GAT
= 30.1 k
.
A capacitor must be connected in parallel with R
GAT
to
ensure stability of the microphone amplifier. Together with
R
GAT
, it also provides a first-order low-pass filter.
By applying a HIGH level on pin MUTET, the microphone
amplifier is muted and the TEA1093 is automatically
forced into the receive mode.
Fig.6 Microphone channel.
handbook, full pagewidth
MGD221
V
I
I
V
CMIC
VBB
RMIC
MUTET
MIC
from
voice
switch
to
envelope
detector
MICGND
MOUT
GAT 21
20
19
22
18
to TEA106X
RGAT
to
logic
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相關(guān)代理商/技術(shù)參數(shù) |
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| 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 |
| TEA1094AM | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
| TEA1094AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
| TEA1094T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hands free IC |
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