The Smart Timing Choice



The Smart Timing Choice



SiT3921

Digitally Controlled Differential Oscillator (DCXO)

Rev. 1.1

Page 2 of 12

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Pin Description

Pin

Map

Functionality

1

DP

Input

Digital programming pin

2

NC

Input

No Connect

3

GND

Power

VDD power supply ground

4

OUT+

Output

Oscillator output

5

OUT-

Output

Complementary oscillator output

6

VDD

Power

Power supply voltage

Absolute Maximum

Attempted operation outside the absolute maximum ratings may cause permanent damage to the part. Actual performance of

the IC is only guaranteed within the operational specifications, not at absolute maximum ratings.

Parameter

Min.

Max.

Unit

Storage Temperature

-65

150

°C

VDD

-0.5

4

V

Electrostatic Discharge

–

2000

V

Soldering Temperature (follow standard Pb free soldering guidelines)

–

260

°C

Program Retention over -40 to 125°C, Process, VDD (0 to 3.65V)

1,000+

–

years

Thermal Consideration

Package

(°C/W)

(°C/W)

7050, 6-pin

142

27

5032, 6-pin

97

20

3225, 6-pin

109

20

Environmental Compliance

Parameter

Condition/Test Method

Mechanical Shock

MIL-STD-883F, Method 2002

Mechanical Vibration

MIL-STD-883F, Method 2007

Temperature Cycle

JESD22, Method A104

Solderability

MIL-STD-883F, Method 2003

Moisture Sensitivity Level

MSL1 @ 260°C

4

3

1

6

DP

GND

VDD

OUT+

5

2

NC

OUT-

Top View

Electrical Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Condition

LVDS, DC, and AC Characteristics

Supply Voltage

Vdd

2.97

3.3

3.63

V

2.25

2.5

2.75

V

Current Consumption

Idd

–

47

55

mA

Excluding Load Termination Current, Vdd = 3.3V or 2.5V

Differential Output Voltage

VOD

200

350

500

mV

See Figure 12

VOD Magnitude Change

––

50

mV

See Figure 12

Offset Voltage

VOS

1.125

1.2

1.375

V

See Figure 12

VOS Magnitude Change

–

–

50

mV

See Figure 12

Rise/Fall Time

Tr, Tf

360

495

600

ps

20% to 80%

RMS Period Jitter

T_jitt

–

1.2

1.7

ps

f = 100 MHz, Vdd = 3.3V or 2.5V

–

1.2

1.7

ps

f = 156.25 MHz, Vdd = 3.3V or 2.5V

–

1.2

1.7

ps

f = 212.5 MHz, Vdd = 3.3V or 2.5V

RMS Phase Jitter (random)

T_phj

–

0.5

0.75

ps

f = 156.25 MHz, Integration bandwidth = 12 kHz to 20 MHz, all

Vdds