DS1094LU datasheet(3/11 Pages) DALLAS

3 / 11 page

Multiphase Spread-Spectrum EconOscillator

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AC ELECTRICAL CHARACTERISTICS

(VCC = +3.0V to 3.6V, TA = -40°C to +85°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Master Oscillator Frequency

fMOSC

MHz

Output Frequency Tolerance

∆fOUT

VCC = 3.3V,

TA = +25°C (Note 8)

-2.5

+2.5

Voltage Frequency Variation

∆fOUT

TA = +25°C (Note 2)

-0.5

+0.5

0 to +70°C

-1.1

+1.1

Temperature Frequency Variation

∆fOUT

VCC = 3.3V (Note 2)

-40°C to +85°C

-2.5

+1.1

DAC Step Size

-0.75

+0.75

Peak-to-Peak Jitter (3σ)

P1:P0 = 11 (Note 3)

Load Capacitance

2 Phase

3 Phase

33.3

Output Duty Cycle (Note 4)

4 Phase

Power-Up Time

tPOR +

tSTAB

(Note 5)

0.1

0.5

AC ELECTRICAL CHARACTERISTICS (See Figure 3)

(VCC = +3.0V to 3.6V, TA = -40°C to +85°C, unless otherwise noted. Timing referenced to VIL(MAX) and VIH(MIN).)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SCL Clock Frequency

fSCL

(Note 6)

400

kHz

Bus Free Time Between Stop and

Start Conditions

tBUF

1.3

µs

Hold Time (Repeated) Start

Condition

tHD:STA

0.6

µs

Low Period of SCL

tLOW

1.3

µs

High Period of SCL

tHIGH

0.6

µs

Data Hold Time

tHD:DAT

0.9

µs

Data Setup Time

tSU:DAT

100

Start Setup time

tSU:STA

0.6

µs

SDA and SCL Rise Time

(Note 7)

20 +

0.1CB

300

SDA and SCL Fall Time

(Note 7)

20 +

0.1CB

300

Stop Setup Time

tSU:STO

0.6

µs

SDA and SCL Capacitive

(Note 7)

400

EEPROM Write Time

tWR

510

Input Capacitance

5pF

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