NJW1200 [NJRC]

Low-Voltage 2-channel Electronic Volume with ealaBASS; 低电压双通道电子音量与ealaBASS


型号：	NJW1200
厂家：	NEW JAPAN RADIO
描述：	Low-Voltage 2-channel Electronic Volume with ealaBASS 低电压双通道电子音量与ealaBASS 电子
文件：	总2页 (文件大小：67K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

NJW1200

Low-Voltage 2-channel Electronic Volume with ealaBASS

!GENERAL DESCRIPTION

!PACKAGE OUTLINE

The NJW1200 is a low-voltage 2-channel Electronic

Volume with ealaBASS. It includes main volume, 2 stereo

inputs selector (Differential Input), 2nd Order HPF. And It

performs NJRC original dynamic bass boost technology

“ealaBASS” provides graceful bass sound with low

distortion.

The NJW1200 performs low noise and low distortion

characteristics with resistance ladder type electrical volume.

The NJW1200 operates on low supply voltage. And It

includes power save function. Therefore, it is suitable for low

voltage supply portable systems.

NJW1200V

All of internal status and variables are controlled by I²C

BUS interface.

!FEATURES

●

Operating Voltage

Low Consumption

2.7 to 5.5V

3mA typ.

Power Save Function 120µA typ.

I²C BUS Interface

ealaBASS (Dynamic Bass Boost)

eala (Surround Sound for stereo source) & eala MONO (Surround Sound for monaural source)

Low Output Noise

Low Distortion

Main Volume

2 stereo Inputs Selector (Differential Input)

2nd Order HPF

-100dBV typ.

0.07% typ.

0 to –78dB / 2dB step, Mute

Bi-CMOS Technology

Package Outline

SSOP32

!BLOCK DIAGRAM

AUX

Control

SELOUTa

EVROUTa

OUTa

Differential

Input stage

IN1a

DIFFGND1

IN1b

SDA

SCL

I²CBus

Interface

HPF

EVR

eala/

IN2a

ealaBass

Bias

DIFFGND2

IN2b

HPF

EVR

Input

selector

SELOUTb

EVROUTb

OUTb

– 1 –

NJW1200

! Application Circuit

C1 4.7

C2 4.7

C3 4.7

C25 4.7

C24 4.7

IN2a

DIFFGND2

IN2b

IN1a

DIFFGND1

IN1b

R1 51k

R2 51k

R7 51k

R6 51k

Ω

DFFGND2

DIFFGND1

IN1b

Ω

C23 4.7 F

Ω

IN2b

SELOUTa

SELOUTb

EV RINb

C21 0.47

C5 0.47 F

EV RINa

EV ROUTa

EVROUTb

HPF1b

12k

R11

C20 150nF

C19 150nF

C6 150nF

C7 150nF

12k

Ω

HPF1a

HPF2a

HBSTa

HPF2b

HBSTb

C26 10

R9 39k

R10 39k

C27 10 F

Ω

C18 1nF

C8 1nF

C9 470nF

ealaBass

LPF1

ealaBass

LPF3

C17 82nF

C10

ealaBass

LPF2

ealaBass

INT

OUTa

AUX

SDA

SCL

GND

OUTb

C15 10nF

eala

Filter

C14

C13

SDA

SCL

SURTC

VREF

V⁺

C12

1 F

V_pullup

( 1.5V to V⁺)

Power save Control

330uF

330 uF

Headphone

OUTa

Headphone

OUTb

0.22uF 10ohm

0.47uF

10ohm 0.22uF

0.47uF

0.33 uF

22uF

VCC

22uF

[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.

– 2 –

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