Datasheet > NJU7505AM-TE2

NJU7505AM-TE2

更新时间： 2024-01-28 01:14:44

品牌	Logo	应用领域
NJRC		/
页数	文件大小	规格书
8页	125K
描述
Active Filter,

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技术参数
数据手册

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NJU7505AM-TE2 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.84

NJU7505AM-TE2 数据手册

NJU7505A

BAND PASS FILTER

FOR AUDIO SPECTRUM ANALYZER DISPLAY

ꢀPACKAGE OUTLINE

ꢀGENERAL DESCRIPTION

The NJU7505A is a band pass filter for audio spectrum

analyzer display.

It consists of high and low band pass filters, CR oscillation

circuit, control circuit and DC transfer circuit.

Each band pass filter using the switched capacitor filter

technology operates at the shared time by 5 bands which

filter constant is switched by the internal clock.

Therefore, the audio signal shared of 5 bands is output

from a serial output terminal.

NJU7505AD

NJU7505AM

The 10 bands version using the double by the cascade

connection is prepared.

ꢀPIN CONFIGURATION

ꢀFEATURES

ꢁBPF for the audio spectrum analyzer display of the 5 bands

ꢁ10 bands extension is available by the cascade connection

ꢁBPF using the switched capacitor filter technology

ꢁCR oscillation circuit on chip

(External clock input is available)

ꢁPower-on initialization circuit on chip

(External reset input is available)

OSC1

OSC2

V^DD

A^IN

A^OUT

V^SS

RSTb/CLKO

ꢁC-MOS Technology

ꢁPackage Outline

DIP8, DMP8

ꢀBLOCK DIAGRAM

Audio Signal

Control Signal

Clock Signal

RSTb/CLKO

OSC1

Power-on

Initialize

Control Circuit

OSC

OSC2

R_H

f_OSCf_OSC/16f_OSC/4i_H

i_LR_L

Φ_H

Φ_L

BPF

High Band

Peak Detector

Level Shifter

Output BUF

A_OUT

A_IN

Input BUF

LPF

BPF

Low Band

Peak Detector

V_DD

A_GND

V_SS

Ver.2008-07-30

- 1 -

12 3 4 5 6 7 8

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