SM8707D View Datasheet(PDF) - Nippon Precision Circuits

Part Name

Description

Manufacturer

SM8707D

Clock Generator with Dual PLLs

Nippon Precision Circuits  

SM8707 series

SM8707H

fXTAL = 27.0000MHz, VDD = 3.3V ± 0.3V, VSS = 0V, Ta = – 40 to + 85 °C unless otherwise noted.

Parameter

Symbol

Pins

Condition

Rating

Unit

min

typ

max

External input clock

frequency1

fXTI

XTI

Applies to external clock input use only

–

27.0000

–

MHz

Output clock rise time2

MO1, MO2, CL = 25 pF, transition between VOL =

SO2, SO3

0.2VDD and VOH = 0.8VDD

tr

–

2.0

–

ns

SO1, AO1

CL = 15pF, transition between

VOL = 0.2VDD and VOH = 0.8VDD

–

2.0

–

Output clock fall time2

MO1, MO2,

SO2, SO3

CL = 25pF, transition between VOH =

0.8VDD and VOL = 0.2VDD

–

tf

2.0

–

ns

SO1, AO1

CL = 15pF, transition between

VOH = 0.8VDD and VOL = 0.2VDD

–

2.0

–

MO1, MO2

–

20

–

Output clock jitter3

tjitter

(1-sigma)

SO2, SO3

Ta = 25°C, CL = 25pF, VO = 0.5VDD

–

70

–

ps

SO1, AO1

Ta = 25°C, CL = 15pF, VO = 0.5VDD

–

70

–

Output clock duty cycle2

Dt

MO1, MO2,

SO2, SO3

Ta = 25°C, CL = 25pF, VO = 0.5VDD

45

50

55

%

SO1, AO1

Ta = 25°C, CL =15 pF, VO = 0.5VDD

45

50

55

Settling time2

tS

All outputs

excluding XTO

–

–

1

µs

Power-up time2, 4

tP

All outputs

excluding XTO

–

1

5

ms

1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the

absolute maximum rating, otherwise damage may occur.

2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board.

3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board.

4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches ± 0.1% of the specified frequency.

NIPPON PRECISION CIRCUITS INC.—11

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