Speech/handsfree. TEA1098AH Datasheet

TEA1098AH Speech/handsfree. Datasheet pdf. Equivalent


Part TEA1098AH
Description Speech/handsfree
Feature INTEGRATED CIRCUITS DATA SHEET TEA1098A Speech and handsfree IC Preliminary specification File unde.
Manufacture NXP
Datasheet
Download TEA1098AH Datasheet


INTEGRATED CIRCUITS DATA SHEET TEA1098A Speech and handsfr TEA1098AH Datasheet
Recommendation Recommendation Datasheet TEA1098AH Datasheet




TEA1098AH
INTEGRATED CIRCUITS
DATA SHEET
TEA1098A
Speech and handsfree IC
Preliminary specification
File under Integrated Circuits, IC03
2000 Mar 21



TEA1098AH
Philips Semiconductors
Speech and handsfree IC
Preliminary specification
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.
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 TEA1098A is an analog bipolar circuit dedicated for
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.
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.
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)
ORDERING INFORMATION
TYPE NUMBER
TEA1098ATV
TEA1098AH
NAME
VSO40
QFP44
PACKAGE
DESCRIPTION
plastic very small outline package; 40 leads
plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10 × 10× 1.75 mm
VERSION
SOT158-1
SOT307-2
2000 Mar 21
2







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)