TEA1093T Philips Semiconductors, TEA1093T Datasheet - Page 2

• Manufacturer Part Number: TEA1093T
• Description: Hands-free IC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
ORDERING INFORMATION
1996 Feb 09
Line powered supply with:
– adjustable stabilized supply voltage
– power down function
Microphone channel with:
– externally adjustable gain
– microphone mute function
Loudspeaker channel with:
– externally adjustable gain
– dynamic limiter to prevent distortion
– rail-to-rail output stages for single-ended or
– logarithmic volume control via linear potentiometer
– loudspeaker mute function
Duplex controller consisting of:
– signal envelope and noise envelope monitors for both
– decision logic with:
– voice switch control with:
Hands-free IC
TYPE NUMBER
bridge-tied load drive
channels with:
externally adjustable sensitivity
externally adjustable signal envelope time constant
externally adjustable noise envelope time constant
externally adjustable switch-over timing
externally adjustable idle mode timing
externally adjustable dial tone detector in receive
channel
adjustable switching range
constant sum of gain during switching
constant sum of gain at different volume settings.
TEA1093T
TEA1093
NAME
DIP28
SO28
plastic dual in-line package; 28 leads (600 mil)
plastic small outline package; 28 leads; body width 7.5 mm
2
APPLICATIONS
GENERAL DESCRIPTION
The TEA1093 is a bipolar circuit intended for use in
line-powered telephone sets. In conjunction with a
member of the TEA1060 family or PCA1070 transmission
circuits, the device offers a hands-free function for line
powered telephone sets. It incorporates a supply, a
microphone channel, a loudspeaker channel and a duplex
controller with signal and noise monitors on both channels.
DESCRIPTION
Line-powered telephone sets with
hands-free/listening-in functions.
PACKAGE
Product specification
TEA1093
SOT136-1
VERSION
SOT117-1