MSM7577 Просмотр технического описания (PDF) - Oki Electric Industry

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Компоненты Описание

производитель

MSM7577

Voice Signal Level Control LSI

Oki Electric Industry 

¡ Semiconductor

APPLICATION CIRCUIT

MSM7577

Transmit voice data

R1

R2 C3

C1

Receive voice data

MSM7577MS-K

1 TAUD

2 AN2

3 PD

4 RCV2

5 RCV1

6 NC

7 RAUD

8 GND

VDD 16

AO3 15

MIC 14

AN3 13

ATTE 12

ATT2 11

ATT1 10

ATT0 9

In the Reverse Type

C6

R4

AO3

Analog input

C5 R3

AN3

–

MIC

+

+3 V

C2

C4

C1

R1 > 30 kW

R2 > 30 kW

C1 = 0.1 µF

C2 = 1 µF

C3 = 50 pF

C4 = 10 pF

Gain = R2/R1

R3 > 10 kW

R4 > 10 kW

C5 > 1 µF

C6 = 50 pF

Gain = R4/R3

In the Same Phase Type

C7

Analog input

R5

R6

C9

C8

MIC –

AN3 +

AO3

R5 > 10 kW

R6 > 10 kW

C7 > 0.1 µF

C8 > 1 µF

C9 = 10 pF

Gain = 1 + (R5/R6)

7/8

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