NJW1124 Просмотр технического описания (PDF) - Japan Radio Corporation

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NJW1124

Voice Switched Speakerphone circuit

Japan Radio Corporation  

! APPLICATION CIRCUIT

V+ :MUTE

GND :ACTIVE

1µ

V+

300k

1 VREF2

2 MUT

3 NC

1µ

470n

4

CPT

5 TLO2

470n

6 RLO2

1u

Mic In

100n 5.1k

51k

100n

TX

OU T

+

LINE

OU T

-

100n

100n

5. 1k

51k

7

8

9

51k

10

10k

11

12

13

47p

14

15

CT

MCI

M CO

TLI2

TLI1

TXO

LII

LIO-

LIO+

16 GND

NJW1124

V+

MON 32

RTSW 31

VREF 30

TR1 2.2k

LED1

56k 0.47µ

Rx-Mode :V+

Tx-Mode :GND

Idle

:H I -Z

Monitor Out

V+

V+ :Recive

GND :Trensmit

1µ

Open :Auto

CPR 29

1µ

470n

RLO1 28

TLO1 27

VLC 26

470n

100k

FI 25

FO 24

51k

RLI1 23

10k

RLI2 22

RXO 21

NC 20

5.1k 100n

5.1k

100n

Receive In

V+

1µ

15k

V+ :ACTIVE

GND :Shut Down

1 SD

1µ

2 SDTC

100n

Receive Out

1µ

0.1u 11k

3 + IN

4 -IN

22k

OUTB 8

GND 7

V+ 6

OUTA 5

NC 19

NC 18

V+ 17

V+ (1)

1µ

V+ (2)

10u

+

Speaker Out

-

–7–

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