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UTCL6726 Datasheet

  • UTCL6726

  • UNIVERSAL SPEECH CIRCUIT

  • 12頁

  • UTC-IC

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UTC L6726
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
UNIVERSAL SPEECH CIRCUIT
The UTC L6726 is a mask-programmable, monolithic
integrated
telephones.
It is designed for using with a low impedance
microphone.
Transmitting
and
receiving
gain
are
regulated with line length. Different regulation for various
current feeds can be set by external resistors. Typical
current feeds as 48V,2
路
200鈩? 48V,2
路
400鈩?and
36V,2路500鈩? can be handled. Application dependent
parameters such as line balance, side tone level,
amplification and frequency response are set by external
components. Parameters are set independently which
means easy adaptation for various market needs.
The
UTC
L6726
is
developed
for
using
with
CMOS-type dialer ICs. A separate DTMF input is
switched when the circuit is muted, and an adjustable DC
supply is provided for feeding an external CMOS device.
speech
circuits
for using
in
electronic
DIP-18
FEATURES
*Minimum number of inexpensive external components,
5 capacitors and 11 resistors.
*Mute function for operation with DTMF-generator.
*Transmit and receive gain regulation for automatic loop
loss compensation.
*Extended current and voltage range 5~130mA,down to
2V.
*Differential microphone input for good balance to
ground.
*Balanced receiver output stage.
*Short start-up time.
*Stabilized DC-supply for low current CMOS dialers
and/or electret microphones.
*DTMF-input controlled by mute.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R108-015,A

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