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參數(shù)資料
| 型號： | TEA1098AH |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Speech and handsfree IC |
| 中文描述： | 免提語音和集成電路 |
| 文件頁數(shù)： | 13/40頁 |
| 文件大?。?/td> | 185K |
| 代理商： | TEA1098AH |
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2000 Mar 21
13
Philips Semiconductors
Preliminary specification
Speech and handsfree IC
TEA1098A
HANDSFREE MICROPHONE CHANNEL
(
PINS
TXI, GATX, TXO
AND
GNDTX;
SEE
Fig.8)
The TEA1098A has an asymmetrical handsfree microphone input (pin TXI) with an input resistance of 20 k
. The DC
biasing of the input is 0 V. The gain of the input stage varies according to the mode of the TEA1098A. 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 TXO is biased at two diodes voltage and
has a current capability equal to 20
μ
A (RMS). In the transmit mode, the overall gain of the microphone amplifier (from
pins TXI to TXO) can be adjusted from 0 dB up to 31 dB to suit specific application requirements. The gain is proportional
to the value of R
GATX
and equals 15.2 dB with R
GATX
= 30.1 k
. Without limitation from the output, the microphone input
stage can accommodate signals up to 18 mV (RMS) at room temperature for 2% of THD.
L
OUDSPEAKER CHANNEL
handbook, full pagewidth
FCA150
V
I
I
V
CMIC
VBB
RMIC
TXI
from
voice
switch
to
envelope
detector
GNDTX
TXO
GATX
31 (28)
(27) 30
(26) 29
(29) 32
RGATX
Fig.8 Handsfree microphone channel
handbook, full pagewidth
FCA151
DYNAMIC
LIMITER
VOLUME
CONTROL
I V
V I
DLC
LSAO
GALS
LVCI
HFRX
15 (11)
16 (12)
13 (8)
6 (1)
5 (42)
EVCI
4 (41)
VBB
RGALS
CGALS
CLSAO
CDLC
to
logic
to/from
voice switch
to
envelope
detector
Fig.9 Loudspeaker channel.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TEA1098ATV | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC |
| TEA1098H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC |
| TEA1098TV | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC |
| TEA1098UH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC |
| TEA1099 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC with auxiliary inputs/outputs and analog multiplexer |
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