IL3726AN Datasheet, PDF (1/4 Pages) Integral Corp. – Universal Speech Circuit with Dialler Interface

TECHNICAL DATA
Universal Speech Circuit
with Dialler Interface
IL3726AN
The IL3726AN is a low voltage speech network which includes Mic amp. transmit
amp, receive amp. and stabilized DC-supply It handles the voice signal performing
the 2/4 wire interface and changing the gain on both sending and receiving
amplifiers to compensate for line attenuation by sensing the line length through the
line current.
Application dependent parameters such as amplitude of each amp, sidetone level,
line balance and frequency response are controlled by external components. Each
gain can be controlled by external component exchange.
ORDERING INFORMATION
IL3726AN
T_A = -40° to 70° C
• Uses a minimum of external components (7 Capacitors & 11 Resistors)
• Low Voltage Operating
• Symmetrical inputs for microphones, provided good balance to ground
• DTMF signal input with confidence tone
• Mute input for DTMF dialling
• Line loss compensation (line current dependent) for microphone and earpiece amplifiers
• Gain control curve adaptable to exchange supply
• DC line voltage adjustment facility
BLOCK DIAGRAM
789
6
DC
12
13
1
4
17
18
10
5
3
11 2 15 14 16


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