GL6962 Просмотр технического описания (PDF) - Hynix Semiconductor

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GL6962

Low Voltage Universal Speech Network

Hynix Semiconductor 

GL6962/GL6962A

Iline

100•F

VO

+

RL

600¥ Ø

R4

100k¥ Ø

C4

100pF

C7

1 nF

10 to

Vi

140mA

1

10

LN

IR

4

QR

R1

620¥ Ø

13

VCC

5

RGA

GL6962A

MIC+

7

MIC-

6

SLPE TGA1 TGA2 REG AGC

Iref

11

DTMF

12

MUTE

+

10•F

VEE

16

2

3

14

15

8

9

C6

100pF

R7

68k¥ Ø

C3

4.7•F

+

R9

C8

20¥ Ø

1 nF

R6

R5

3. 6k

¥Ø

C1

+ 100•F

For measuring gain from MIC+ and MIC-, the MUTE input should be HIGH.

For measuring the DTMF input, the MUTE input should be LOW or open-circuit.

Inputs not being tested should be open-circuit.

Fig. 2 Test circuit for defining GL6962A voltage gain of MIC+, MIC- and DTMF inputs.

(Voltage gain is defined as GV = 20log |Vo/Vi|

9

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