DS1086 Spread-Spectrum EconOscillator

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3

MASTER OSCILLATOR CHARACTERISTICS

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

Master Oscillator Range

(Note 2)

66

133

MHz

Default Master Oscillator Frequency

97.1

MHz

-0.75

+0.75

Master Oscillator Frequency

Tolerance

°C

(Notes 3,17)

DAC step size

-0.75

+0.75

%

Default frequency

-0.75

+0.75

Voltage Frequency Variation

Over voltage range,

°C (Note 4) DAC step size

-0.75

+0.75

%

Default frequency

-0.5

+0.5

133MHz

-0.5

+0.5

Temperature Frequency Variation

Over temperature

(Note 5)

66MHz

-1.0

+1.0

%

Prescaler bit J0 = 1 (Note 6)

2

Dither Frequency Range

∆f

Prescaler bit J0 = 0 (Note 6)

4

%

Integral Nonlinearity of Frequency

DAC

INL

Entire range (Note 7)

-0.4

+0.4

%

DAC Step Size

∆ between two consecutive DAC values

(Note 8)

10

kHz

DAC Span

Frequency range for one offset setting

(see Table 2)

10.24

MHz

DAC Default

Factory default register setting

500

decimal

Offset Step Size

∆ between two consecutive offset values

(see Table 2)

5.12

MHz

Offset Default

OS

Factory default OFFSET register setting

(5 LSBs) (see Table 2)

RANGE

(5 LSBs of

RANGE register)

hex

Dither Rate

Hz