L6726

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

13 of 13

www.unisonic.com.tw

QW-R108-015.D



APPLICATION INFORMATION(Cont.)

Fig. 9 Typical sidetone network

Fig. 10 Sidetone network especially

suited for applicatons with a high line

current,when R6 has a low value

+Line

R10

R12

C6

15

2

R11

RA

RB

R6

Rc

Low impedance

network.

+Line

Zbal

C6

15

C

R6

2

* To get flat response

for receiving

R12

Fig.11 Magnetic reciever connection

R14

17

18

200Ω

200Ω

1μF

1μF

12

13

14

4

Fig. 12 Electret microphone with FET buffer

AM

12

13

50k

50k

MIC

Fig. 13 Additional components for

extended low current/voltage oeration

13

12

Fig. 14 Connection of a magnetic microphone

11

-Line

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.