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NJM2704

3D SURROUND AUDIO PROCESSOR FOR HEADPHONE

Japan Radio Corporation  

NJM2704

qAC CHARACTERISTICS

(V+=3V, Ta=25°C, VIN=-20dBV(100mVrms), f=1kHz, RL=10kΩ, unless otherwise specified)

TEST CONDITION

PARAMETER SYMBOL

INPUT

OUTPUT

LR

MODE

MIN. TYP.

VR

Bypass Gain

GVBYP

f=1kHz

VIN 0

L

0 VIN

R

Bypass

-

-1.0 0.0

Surround Gain

GVSUR

f=100Hz

VIN 0

0 VIN

L

R

Surround MAX 12.5 14.5

MAX.

1.0

16.5

UNIT

dB

f=100Hz

0 VIN

VIN 0

L

R

Surround MAX 10.5 12.5 14.5 dB

f=100Hz

VIN 0

0 VIN

L

R

Surround MIN 0.5 2.5 4.5

qCONTROL CHARACTERISTICS (V+=3V, Ta=25°C unless otherwise specified)

PARAMETER SYMBOL

Mode Select

Control

Voltage

VMODE

VIN=

High Level

VIN=

Low Level

TEST CONDITION

INPUT

OUTPUT

LR

MODE

--

-

-

--

-

-

MIN.

VR

-

1.2

-

0.0

TYP.

-

-

MAX.

V+

0.3

UNIT

V

sSWITCH FUNCTION

MODE SW

MODE

Terminal Status

Bypass

L, open

Surround

H

NOTES

Input Through

Surround Mode (Stereo Input)

STANDBY SW

MODE

Standby

Active

Terminal Status

L, open

H

NOTES

IC is non-active

IC is active

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