AK8137A

MS1109_E_02

February-10

- 5 -

AC Characteristics

All specifications at VDD: over 3.0 to 3.6V, Ta: over -20 to +85℃, 25MHz Crystal, unless otherwise noted

(1) 1000 sampling or more

(2) Measured with load condition shown in Figure.1

(3) Measured with load capacitance of 25pF

(4) Refer to Figure.5 on Power down sequence

(5) Refer to Figure.4 on Power On Reset sequence

Parameter

Symbol

Conditions

MIN

TYP

MAX

Unit

Crystal Clock Frequency

Pin: XI,XO

25.000

MHz

Cycle to Cycle Jitter 1

Pin: CPU_Cp, CPU_Cn

(1)(2)

-85

+85

ps

Cycle to Cycle Jitter 2

Pin: USB_Cp, USB_Cn

(1)(2)

-250

+250

ps

Cycle to Cycle Jitter 3

Pin: SATA_Cp,SATA_Cn

(1)(2)

-125

+125

ps

Pin: Diff CLK Pins

(2)

Figure.3

45

50

55

%

Output Clock Duty

Cycle

DtyCyc

Pin: REFOUT

(3)

40

50

60

%

Output Clock Slew Rate

Diff CLK Pins

(2)

Figure3

2.5

8.0

V/ns

Slew rate matching

Diff CLK Pins

(2)

Figure.2

20

%

Differential output swing

Diff CLK Pins

(2)

Figure.3

300

mV

Crossing point voltage

Diff CLK Pins

(2)

Figure.2

300

550

mV

Variation of

Vcr

Diff CLK Pins

(2)

Figure.2

140

mV

Maximim output voltage

Diff CLK Pins

(2)

Figure.2

1.15

V

Minimum output voltage

Diff CLK Pins

(2)

Figure.2

-0.3

V

Output Clock Rise Time

Pin: REFOUT

(3 )

2.5

5.0

ns

Output Clock Fall Time

Pin: REFOUT

(3 )

2.5

5.0

ns

Output disable Time

(4)

Pin: CLK Pins

300

ms

Power-up Time1

(4)

Pin: CLK Pins

150

ms

Power-up Time2

(5)

Pin: CLK Pins

150

ms