U9131X

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

11 of 11

www.unisonic.com.tw

QW-R502-A34.a



TYPICAL APPLICATION CIRCUIT

OFF HOOK

R5 10M

-

+

TIP

RING

VR1

250V

D1-D4

1N4004

SPEECH

NETWORK

Q7

9013

R18

22K

VDD

UTC U91310 SERIES

R4

R2 R1

R3

VDD MODE DP DTMF HKS

C1 C2 C3 C4 B/M VSS XT

XT T/P MUTE

C5

30P

3.58MHz

C6

30P

X1

VDD

PULSE

TONE

VDD

R3

33K

R4

3K3

Q1

A94

Q2

A42

ON HOOK

R1

200K

D5

1N4148

R6

3K

D7

1N4148

D8

5V1

C1

100µF

R9

470K

R7

1M

R8

300K

Q3

9013

C10

0.1µF

R10 10K

C4 4µ7

Q4

C1815

R11

75

1

4

7

*

23

56

F

89

P T

0

#

R/P

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.