Datasheet

DS1086
Spread-Spectrum EconOscillator
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MASTER OSCILLATOR CHARACTERISTICS
(V
CC
= 5V ±5%, T
A
= 0°C to +70°C.)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
Master Oscillator Range f
OSC
(Note 2) 66 133 MHz
Default Master Oscillator Frequency f
0
97.1 MHz
Default frequency (f
0
) -0.75 +0.75
Master Oscillator Frequency
Tolerance
∆ f
0
f
0
V
CC
= 5V,
T
A
= +25°C
(Notes 3,17)
DAC step size -0.75 +0.75
%
Default frequency -0.75 +0.75
Voltage Frequency Variation
∆
f
V
f
0
Over voltage range,
T
A
= +25°C (Note 4)
DAC step size -0.75 +0.75
%
Default frequency -0.5 +0.5
133MHz -0.5 +0.5Temperature Frequency Variation
∆
f
T
f
0
Over temperature
range, V
CC
= 5V
(Note 5)
66MHz -1.0 +1.0
%
Prescaler bit J0 = 1 (Note 6) 2
Dither Frequency Range
∆
f
f
0 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 f
0
/4096 Hz