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TEA1094A Scheda tecnica(PDF) 2 Page - NXP Semiconductors

Il numero della parte TEA1094A
Spiegazioni elettronici  Hands free IC
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TEA1094A Scheda tecnica(HTML) 2 Page - NXP Semiconductors

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1996 Jul 15
2
Philips Semiconductors
Product specification
Hands free IC
TEA1094; TEA1094A
FEATURES
• Low power consumption
• Power-down function (TEA1094A only)
• Microphone channel with:
– externally adjustable gain
– microphone mute function.
• Loudspeaker channel with:
– externally adjustable gain
– dynamic limiter to prevent distortion
– rail-to-rail output stage for single-ended load drive
– logarithmic volume control via linear potentiometer
– loudspeaker mute function.
• Duplex controller consisting of:
– signal envelope and noise envelope monitors for both
channels with:
externally adjustable sensitivity
externally adjustable signal envelope time constant
externally adjustable noise envelope time constant
– decision logic with:
externally adjustable switch-over timing
externally adjustable idle mode timing
externally adjustable dial tone detector in
receive channel
– voice switch control with:
adjustable switching range
constant sum of gain during switching
constant sum of gain at different volume settings.
APPLICATIONS
• Mains, battery or line-powered telephone sets with
hands-free/listening-in functions
• Cordless telephones
• Answering machines
• Fax machines.
GENERAL DESCRIPTION
The TEA1094 and TEA1094A are bipolar circuits intended
for use in mains, battery or line-powered telephone sets,
cordless telephones, answering machines and Fax
machines. In conjunction with a member of the TEA106X,
TEA111X families of transmission circuits, the devices
offer a hands-free function. They incorporate a
microphone amplifier, a loudspeaker amplifier and a
duplex controller with signal and noise monitors on
both channels.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TEA1094
DIP28
plastic dual in-line package; 28 leads (600 mil)
SOT117-1
TEA1094A
DIP24
plastic dual in-line package; 24 leads (600 mil)
SOT101-1
TEA1094T
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
TEA1094AT
SO24
plastic small outline package; 24 leads; body width 7.5 mm
SOT137-1
TEA1094AM
SSOP24
plastic shrink small outline package; 24 leads; body width 5.3 mm
SOT340-1


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