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| 型號： | TEA1098 |
| 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)： | 10/40頁 |
| 文件大?。?/td> | 199K |
| 代理商： | TEA1098 |
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1999 Oct 14
10
Philips Semiconductors
Product specification
Speech and handsfree IC
TEA1098
handbook, full pagewidth
(pA)
10
7
1.0
1.5
2.5
3.0
VDD (V)
2.0
8
10
6
10
5
10
4
10
3
10
2
10
FCA050
Fig.6 Current consumption on V
DD
.
P
OWER
-
DOWN MODE
(
PIN
PD)
To reduce consumption during dialling or register recall
(flash), the TEA1098 is provided with a power-down input
(PD). When the voltage on pin PD is LOW, the current
consumption from V
BB
and V
DD
is reduced to typically
460
μ
A. Therefore a capacitor of 470
μ
F on V
BB
is
sufficient to power the TEA1098 during pulse dialling or
flash. The PD input has a pull-up structure. In this mode,
the capacitor C
REG
is internally disconnected.
Transmit channels (pins MIC+, MIC
, DTMF,
HFTX and LN)
H
ANDSET MICROPHONE AMPLIFIER
(
PINS
MIC+, MIC
AND
LN)
The TEA1098 has symmetrical microphone inputs.
The input impedance between pins MIC+ and MIC
is
typically70 k
.ThevoltagegainbetweenpinsMIC+/MIC
and LN is set to 44.3 dB. Without output limitation, the
microphone input stage can accept signals of up to
18 mV (RMS) at 2% THD (room temperature).
The microphone inputs are biased at a voltage of one
diode.
Automatic gain control is provided for line loss
compensation.
DTMF
AMPLIFIER
(
PINS
DTMF, LN
AND
RECO)
The TEA1098 has an asymmetrical DTMF input. The input
impedance between DTMF and GND is typically 20 k
.
The voltage gain between pins DTMF and LN is set to
25.35 dB. Without output limitation, the input stage can
accept signals of up to 180 mV (RMS) at 2% THD (room
temperature).
When the DTMF amplifier is enabled, dialling tones may
be sent on the line. These tones can be heard in the
earpiece or in the loudspeaker at a low level. This is called
theconfidencetone.Thevoltageattenuationbetweenpins
DTMF and RECO is typically
16.5 dB. This input is
DC biased at 0 V.
The automatic gain control has no effect on these
channels.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| TEA1098A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC |
| TEA1098AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Speech and handsfree IC |
| 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 |
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