GL6965 Просмотр технического описания (PDF) - Hyundai Micro Electronics

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GL6965

Telephone Speech Network with Dialer Interface

Hyundai Micro Electronics 

5. AC Impedance UP control.

(1) Application for AC impedance up control

GL6965

VL

ZAC

R2

620¥ Ø

1

R1

43¥ Ø

2

20

+ C8

220 µF

-1

3

R4

15¥ Ø

RA1

C

4

0.1µF

RA2

- The AC Impedance (ZAC) can be increased by using AC Bias terminal (Pin ¨ ê).

- The AC Impedance up amount is determined by the external resistors R1, R2 value. :

(2) The AC impedance is

Z ¡ÖVL ¡Ö

AC IL 1

R2

1

1

RA2

(

)

R 4 RA1 + RA2

17

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