DS1090 Просмотр технического описания (PDF) - Maxim Integrated

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DS1090

Low-Frequency, Spread-Spectrum EconOscillator

Maxim Integrated 

DS1090

Low-Frequency, Spread-Spectrum EconOscillator

AC Electrical Characteristics

(VCC = +3.0V to +5.5V, TA = -40°C to +85°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

Internal Master Oscillator

Frequency

fMOSC

Output Frequency Tolerance

Voltage Frequency Variation

Temperature Frequency Variation

∆fOUT

∆fOUT

∆fOUT

VCC = 3.3V,

TA = +25°C

TA = +25°C, RSET = 60kΩ,

VCC = 3.0V to 3.6V (Notes 2, 3)

TA = +25°C, RSET = 60kΩ,

VCC = 4.5V to 5.5V (Notes 2, 3)

VCC = 3.3V

(Notes 2, 3, 4)

Peak-to-Peak Dither (3σ)

(Note 5)

Power-Up Time

Load Capacitance

Output Duty Cycle

tPOR +

tSTAB

CL

J0 = GND, J1 = GND

J0 = VCC, J1 = GND

J0 = GND, J1 = VCC

J0 = VCC, J1 = VCC

(Note 6)

(Note 7)

4MHz to 8MHz, TA = +25°C (Note 3)

<4MHz (Note 4)

Output Rise/Fall Time

tR, tF CL = 15pF

MIN TYP MAX UNITS

4.0

8.0

MHz

-3.0

+3.0

%

-0.5

-1.25

+0.5

%

+1.25

-2.0

+2.0

%

0

2

4

%

8

0.1

0.5

ms

30

pF

45

55

%

50

20

ns

Note 1: All voltages referenced to ground.

Note 2: This is the change observed in output frequency due to changes in temperature or voltage.

Note 3: See the Typical Operating Characteristics section.

Note 4: Parameter is guaranteed by design and is not production tested.

Note 5: This is a percentage of the output period. Parameter is characterized but not production tested. This can be varied from 0%

to 8%.

Note 6: This indicates the time between power-up and the outputs becoming active. An on-chip delay is intentionally introduced to

allow the oscillator to stabilize. tSTAB is equivalent to ~500 clock cycles and is dependent upon the programmed

output frequency.

Note 7: Output voltage swings can be impaired at high frequencies combined with high output loading.

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