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TEA1094

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 lo...

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SeekIC No. : 004517240 Detail

TEA1094: Features: ` Low power consumption` Power-down function (TEA1094A only)` Microphone channel with: externally adjustable gain microphone mute function.` Loudspeaker channel with: externally adjustable...

TEA1094 Data Sheet

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Part Number:
TEA1094
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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.


Application

· Mains, battery or line-powered telephone sets with hands-free/listening-in functions
· Cordless telephones
· Answering machines
· Fax machines.


Pinout

Connection Diagram


Specifications

SYMBOL
PARAMETER
TEST CONDITIONS
MIN.
MAX.
UNIT
Vn(max)
VRIN(max)
VBB(max)		 maximum voltage on all pins; except pins
VBB, RIN1 and RIN2
maximum voltage on pins RIN1 and RIN2
maximum voltage on pin VBB		   VGND - 0.4

VGND - 1.2
VGND - 0.4		 VBB + 0.4

VBB + 0.4
12.0		 V

V
V
Ptot total power dissipation
TEA1094
TEA1094A
TEA1094T
TEA1094AT
TEA1094AM		 Tamb = 75 °C
-
-
-
-
-
1000
910
625
590
438
mW
mW
mW
mW
mW
Tstg
Tamb		 IC storage temperature
operating ambient temperature


-40
-25
+125
+75
°C
°C



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.




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