SM8701 datasheet(6/14 Pages) NPC

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SM8701BM

NIPPON PRECISION CIRCUITS—6

PLL AC Electrical Characteristics

External clock, Ta = −40 to 85 °C, VDD = VDDP = 4.5 to 5.5 V, VDDO = VDD3 = 2.7 to 3.6 V unless otherwise

stated

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

XTI external input clock frequency

DUTY: 50 ± 5%

–

27.0000

–

M H z

Output clock rise time

All outputs, 0.2 to 0.8VDDO

or V DD3, CL = 20 pF

–

2.5

–

Output clock fall time

All outputs, 0.8 to 0.2VDDO

or V DD3, CL = 20 pF

–

2.5

–

M O , MON output clock jitter1

1. 1.4V to 1.4V. Ta=20

°C.The characteristics of output clock jitter and output clock duty depends on crystal oscillator.

NPC’s standard crystal oscillator: R = 10.5

Ω, L = 5.38 mH, Ca = 6.74 fF, Cb = 1.85 pF

measurement apparatus: HP4195

Load capacitance: C1 = 7 p F, C2 = 11 p F

JITTER

Standard tolerance

Cr ystal oscillator element

–

150

–

SO1, SO2 (Standard), SO3, SO4

output clock jitter1

–

150

–

SO2 (Double) output clock jitter1

–

450

–

M O , MON output clock duty1

DUTY

Cr ystal oscillator element,

C L = 20 pF

SO1, SO2 (Standard), SO3, SO4

output clock duty1

C L = 20 pF

SO2 (Double) output clock duty1

C L = 20 pF

23.3

33.3

43.3

Settling time

All outputs

–

4 0

m s

P ow er-up time2

2. Time from OFF condition to stable frequency output.

All outputs

–

5 0

m s

RSTN external reset LOW -level

pulsewidth

tRSTL

1.4 V to 1.4 V

1 0 0

–

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