參數(shù)資料
型號(hào)： TEA1098A
廠商： NXP Semiconductors N.V.
英文描述： Speech and handsfree IC
中文描述： 免提語(yǔ)音和集成電路
文件頁(yè)數(shù)： 2/40頁(yè)
文件大?。?/td> 185K
代理商： TEA1098A
2000 Mar 21
2
Philips Semiconductors
Preliminary specification
Speech and handsfree IC
TEA1098A
FEATURES
Line interface
Low DC line voltage
Voltage regulator with adjustable DC voltage
Symmetrical high impedance inputs (70 k
) for
dynamic, magnetic or electret microphones
DTMF input with confidence tone on earphone and/or
loudspeaker
Earphone amplifier for dynamic, magnetic or
piezo-electric earpieces (with externally adjustable gain)
Digital volume control on earphone amplifier (4 steps)
Automatic Gain Control (AGC) for true line loss
compensation
Microphone mute
Key tone mode.
Supplies
Provides a strong 3.35 V regulated supply for
microcontroller or dialler
Provides filtered power supply, optimized according to
line current
Filtered 2.0 V power supply output for electret
microphone
PD logic input for power-down.
Handsfree
Asymmetrical high input impedance for electret
microphone
Loudspeaker amplifier with single-ended rail-to-rail
output and externally adjustable gain
Dynamic limiter on loudspeaker amplifier to prevent
distortion
Digital volume control on loudspeaker amplifier (8 steps)
Duplex controller consisting of:
– signalandnoiseenvelopemonitorsforbothchannels
(with adjustable sensitivities and timing)
– decision logic (with adjustable switch-over and Idle
mode timing)
– voice switch control (with adjustable switching range
and constant sum of gain during switching).
APPLICATIONS
Line powered telephone sets.
GENERAL DESCRIPTION
The TEA1098A is an analog bipolar circuit dedicated for
telephonyapplications. Itincludes aline interface, handset
(HS) microphone and earpiece amplifiers, handsfree (HF)
microphone and loudspeaker amplifiers and a duplex
controllerwithsignalandnoisemonitorsonbothchannels.
Digital volume control is available both on earphone and
loudspeaker amplifiers.
This IC provides a 3.35 V strong supply for a
microcontroller and a 2.0 V filtered voltage supply for an
electret microphone.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1098ATV
TEA1098AH
VSO40
QFP44
plastic very small outline package; 40 leads
plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10
×
10
×
1.75 mm
SOT158-1
SOT307-2
相關(guān)PDF資料
PDF描述
TEA1098AH Speech and handsfree IC
TEA1098ATV Speech and handsfree IC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TEA1098AH 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098ATV 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098H 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098TV 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Speech and handsfree IC
TEA1098UH 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Speech and handsfree IC
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