參數(shù)資料
型號(hào)： 935263449118
廠商： NXP SEMICONDUCTORS
元件分類： 無繩電話/電話
英文描述： SPEAKER PHONE CIRCUIT, PDSO40
封裝： PLASTIC, SOT-158, VSOP-40
文件頁(yè)數(shù)： 12/43頁(yè)
文件大小： 237K
代理商： 935263449118
1999 Oct 14
2
Philips Semiconductors
Product specication
Speech and handsfree IC
TEA1098
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
Receive amplifier for dynamic, magnetic or
piezo-electric earpieces (with externally adjustable gain)
Automatic Gain Control (AGC) for true line loss
compensation.
Supplies
Provides a strong 3.35 V regulated supply for
microcontrollers or diallers
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
Logarithmic volume control on loudspeaker amplifier via
linear potentiometer
Duplex controller consisting of:
– Signal and noise envelope monitors for both
channels (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 TEA1098 is an analog bipolar circuit dedicated to
telephony applications. It includes a line interface, handset
(HS) microphone and earpiece amplifiers, handsfree (HF)
microphone and loudspeaker amplifiers and a duplex
controller with signal and noise monitors on both channels.
This IC provides a 3.35 V supply for a microcontroller or
dialler and a 2.0 V filtered voltage supply for an electret
microphone.
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1098TV
VSO40
plastic very small outline package; 40 leads
SOT158-1
TEA1098H
QFP44
plastic quad at package; 44 leads (lead length 1.3 mm);
body 10
× 10 × 1.75 mm
SOT307-2
TEA1098UH
bare die; on foil
相關(guān)PDF資料
PDF描述
935263449112 SPEAKER PHONE CIRCUIT, PDSO40
935263448557 SPEAKER PHONE CIRCUIT, PQFP44
935263448518 SPEAKER PHONE CIRCUIT, PQFP44
08-01-0106 Connector Contact,SKT,CRIMP Terminal
08-03-0101 Crimp Socket Contact; Wire Size (AWG):20-18; Contact Material:Phosphor Bronze; Contact Plating:Tin
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