NJW1128 データシートの表示（PDF） - Japan Radio Corporation

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NJW1128

Voice Switched Speakerphone Circuit with Speaker Amplifier

Japan Radio Corporation  

NJW1128

! TYPICAL CHARACTERISTICS

Mic Amp Mute attenuate Range vs MUT Pin Voltage

V+ = 5.0V , Vin = 1mVrms , Rf = 300kohm , Ri = 3kohm , Ci = 1uF , Gv=40dB , RL=5.1kohm

A-Weighting

10

0

-10

+85 degC

-20

+25 degC

-40 degC

-30

-40

-50

-60

-70

-80

0

0.5

1

1.5

2

2.5

MUT Pin Voltage [V]

20

TX-Mode

10

0

-10

-20

-30

-40

-50

0

0.5

TX , RX attenuator Gain vs RTSW Pin Voltage

V+ = 5.0V , f = 1kHz , Vin = 200mVrms

Auto(Idle)-Mode

-40degC

+25degC

+85degC

TX Att.

RX Att.

RX Att.

-40degC

+25degC

+85degC

TX Att.

1

1.5

2

2.5

3

3.5

RTSW Voltage [V]

RX-Mode

4

4.5

5

[CAUTION]

The specifications on this databook are only

given for information , without any guarantee

as regards either mistakes or omissions. The

application circuits in this databook are

described only to show representative usages

of the product and not intended for the

guarantee or permission of any right including

the industrial rights.

– 13 –

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