L6726-S18-R datasheet(4/13 Pages) UTC

Il numero della parte	L6726-S18-R

Spiegazioni elettronici	UNIVERSAL SPEECH CIRCUIT

PDF	13 Pages

Scroll/Zoom	100%

Produttore elettronici	UTC [Unisonic Technologies]

Homepage	http://www.utc-ic.com

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L6726

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 13

www.unisonic.com.tw

QW-R108-015,B

FUNCTIONAL DIAGRAM

16 6

UTC L6726

1.Impedance to line and radio interference suppression.

2.Transmit gain and frequency response network.

3.Receive gain and frequency response network.

4.Side tone balance network.

5.DC-supply components.

DTMF

input

DC output for external

CMOS device

Mute

(active low)

Telephone

Line

+LINE

-LINE

REC

MUTE

DTMF

IDC

VDC

ARTIFICAIAL

LINE

1μF

600Ω

RLoad

=400Ω+400Ω

Figure 1. Test setup without rectifier bridge

5H+5H

RL=0~4KΩ

0 Ω when artificail line is used

C1= 1μF when artificial line is used

470μF when not used

MIC

ZMIC=350 Ω

ZRec=350 Ω

E=48.5V

UTC 6726

with external

component

see fig 3

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