BU2192F 데이터 시트보기 (PDF) - ROHM Semiconductor

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BU2192F

Clock generator for personal computers

ROHM Semiconductor 

Multimedia ICs

BU2192F

•Electrical characteristics (unless otherwise noted, Ta = 0 to 70°C, VDD (AVDD) = 4.5V to 5.5V, CL Ϲ 15pF,

XTALI [fREF] = 14.3181MHz)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Input Vth XTALI

Vth

0.8

—

2.2

V

—

Output low level voltage

Output high level voltage

Operating circuit current

Output frequency 1

Output frequency 2

Rise time

Fall time

Jitter

VOL

—

—

0.4

V

lOL = 4.0mA

VOH

VDD – 0.5

—

—

V

lOL = – 4.0mA

IDD

—

30

50

mA fREF = 14.3181MHz, no load

f1

– 100ppm 33.8680 + 100ppm MHz fREF × 123 / 26 / 2

f2

– 100ppm 24.5795 + 100ppm MHz fREF × 103 / 15 / 4

tR

—

—

5

nsec VDD × 0.2 to VDD × 0.8

tF

—

—

5

nsec VDD × 0.8 to VDD × 0.2

J1s

—

80

250 psec 1sigma

Jitter

Power up time

Jabs

tPT

—

300

1

nsec MIN-MAX width

—

—

10

msec ∗

Duty

Duty

45

50

55

% Measure with Vth = 1 / 2VDD

∗ The time for the output to stabilize after the power supply reaches 90% after being turned on.

However, if the power supply rise (to rise condition) takes the entire time, this requirement is satisfied.

•Application example

24.5795MHz

1 CLK2

2 GND

fREF = 14.3181MHz

3 XTALI

4 N.C.

AVDD 8

DVDD 7

N.C. 6

CLK1 5

0.1µF

33.8680MHz

3

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