NJM2781 查看數據表（PDF） - Japan Radio Corporation

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NJM2781

Monaural Microphone Amplifier

Japan Radio Corporation  

NJM2781

I ABSOLUTE MAXIMUM RATING (Ta=25°C)

PARAMETER

SYMBOL

Supply Voltage

V+

Power Dissipation

PD

Operating Temperature Range

Topr

Storage Temperature Range

Tstg

RATING

5

TVSP8:320, SSOP8:250

-40 to 85

-40 to 125

UNIT

V

mW

°C

°C

I ELECTRICAL CHARACTERISTICS

(Ta=25°C,V+=2.8V,Vin=-40dBV, f=1kHz,RL=9kΩ)

GPower Supply

PARAMETER

SYMBOL

TEST CONDITION

Operating Voltage

V+

Operating Current 1

Icc1

No signal, Standby

Operating Current 2

Icc2

No signal, Active

Mic Power Supply Voltage

GAmplifier

PARAMETER

Vo

RL=6.8kΩ

SYMBOL

TEST CONDITION

Output Voltage

Vo

Voltage Gain

GV

Test Circuit 1

Maximum Output Voltage

Total Harmonic Distortion

(THD+N)

VOM

THD

THD=0.1%

Output Noise

VNO

Rg=600Ω, A-Weighted

Power Supply Ripple

Rejection

GControl

PARAMETER

PSRR

Rg=600Ω,

Vripple=-20dBV

SYMBOL

TEST CONDITION

High Level Input Voltage

Low Level Input Voltage

VIH

STBY terminal

VIL

STBY terminal

MIN.

2.7

2.3

TYP.

2.8

-

1.8

2.42

MAX.

4.5

1

4

2.54

UNIT

V

µA

mA

V

MIN.

1.28

24

-2.7

(0.73)

-

-

65

TYP.

1.35

25

-1.5

(0.84)

0.025

-98

(12.6)

80

MAX.

1.42

26

-

0.1

-90

(31.6)

-

UNIT

V

dB

dBV

(Vrms)

%

dBV

(µVrms)

dB

MIN.

2

0

TYP.

-

-

MAX.

V+

0.5

UNIT

V

V

IStandby Mode Operation

Status

Control Terminal

STBY

Active

H

Standby

L, OPEN

IC Condition

IC active

IC standby

–2–

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