NJU7505XD Просмотр технического описания (PDF) - Japan Radio Corporation

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NJU7505XD

BAND PASS FILTER FOR AUDIO SPECTRUM ANALYZER DISPLAY

Japan Radio Corporation  

NJU7505

! AC CHARACTERISTICS

( VDD=4.5 to 6.0V, VSS=0V, Ta=25°C)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNIT NOTE

Oscillation Clock Freq

fOSC RST/CLKO Terminal VDD=5V 360 400 440 KHz 12

External Clock Frequency

fCLK

RST/CLKO Terminal VILC=0V

VIHC=VDD

400 800 KHz 13

Master

8/fOSC

8/fCLK

RD Pulse Width

tPWRD RD Terminal

12/fOS

µs 14

Slave

C

12/fCLK

RST Pulse Width

tPWRS

Master

RST/CLKO Terminal

Slave

4/fOSC

4/fCLK

6/fOSC

6/fCLK

µs 15

RST Rise/Fall Time

tr, tf RST/CLKO Terminal

100 nA 15

Note 12) The example for the CR Oscillation

OSC1 RT: 13KΩ(±2%)

CT: 220pF(±5%)

RT

OSC2

CT

*The oscillation clock frequency is calculated from the

output frequency of the RST/CLKO terminal by 3/2.

VSS

Note 13) The example for the external clock input

Open

Oscillator

OSC1

OSC2

The input signal for the OSC2 terminal should be the

condition of the pulse of DUTY50%±10%.

* The oscillation clock frequency is calculated

from the output frequency of the RST/CLKO terminal

by 3/2.

Note 14) The output wave form of the RD terminal.

0.8VDD

0.8VDD

tPWRD

Note 15) The input wave form of the RST terminal.

tf

TPWRS

tr

0.8VDD

0.2VDD

0.8VDD

0.2VDD

Ver.2004-06-04

-7-

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