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TEA1095
Information as of 2000-08-19
TEA1095; Voice switched speakerphone IC
The TEA1095 is a bipolar circuit, that in conjunction with a member of the TEA106X, TEA111X families of transmission or TEA1096
transmission/listening-in circuits offers a hands-free function. It incorporates a transmit amplifier, a receiver channel amplifier and a duplex
controller with signal and noise monitors on both channels.
l
External power supply with power-down function
l
Transmit channel with:
externally adjustable gain
- transmit mute function
l
Receive channel with:
- externally adjustable gain
- logarithmic volume control via a linear potentiometer
- receive mute function
l
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
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