SIT1602BC-11-25S-74.250000D datasheet, PDF

SiT1602B

Low Power, Standard Frequency Oscillator

Features



Applications



52 standard frequencies between 3.57 MHz and 77.76 MHz

100% pin-to-pin drop-in replacement to quartz-based XO

Excellent total frequency stability as low as ±20 ppm

Operating temperature from -40°C to 85°C. For 125°C and/or

-55°C options, refer to

SiT1618, SiT8918, SiT8920

Low power consumption of 3.5 mA typical at 1.8V

Standby mode for longer battery life

Fast startup time of 5 ms

LVCMOS/HCMOS compatible output

Industry-standard packages: 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5,

5.0 x 3.2, 7.0 x 5.0 mm x mm

Instant samples with

Time Machine II

and

Field Programmable

Oscillators



Ideal for DSC, DVC, DVR, IP CAM, Tablets, e-Books,

SSD, GPON, EPON, etc

Ideal for high-speed serial protocols such as: USB,

SATA, SAS, Firewire, 100M / 1G / 10G Ethernet, etc.



RoHS and REACH compliant, Pb-free, Halogen-free and

Antimony-free

For AEC-Q100 oscillators, refer to

SiT8924

and

SiT8925

Electrical Characteristics

All Min and Max limits are specified over temperature and rated operating voltage with 15 pF output load unless otherwise

stated. Typical values are at 25°C and nominal supply voltage.

Table 1. Electrical Characteristics

Parameters

Output Frequency Range

Symbol

f

Min.

Typ.

Max.

Unit

Condition

Refer to

Table 13

for the exact list of supported frequencies

Frequency Range

52 standard frequencies between

MHz

3.57 MHz and 77.76 MHz

-20

-25

-50

-20

-40

1.62

2.25

2.52

2.7

2.97

2.25

–

45

–

90%

Frequency Stability

F_stab

Frequency Stability and Aging

–

+20

ppm

Inclusive of initial tolerance at 25°C, 1st year aging at 25°C,

and variations over operating temperature, rated power

–

+25

ppm

supply voltage and load.

–

+50

ppm

Operating Temperature Range

–

+70

°C

Extended Commercial

–

+85

°C

Industrial

Supply Voltage and Current Consumption

1.8

1.98

V

Contact

SiTime

for 1.5V support

2.5

2.75

V

2.8

3.08

V

3.0

3.3

V

3.3

3.63

V

–

3.63

V

3.8

4.5

mA

No load condition, f = 20 MHz, Vdd = 2.8V to 3.3V

3.7

4.2

mA

No load condition, f = 20 MHz, Vdd = 2.5V

3.5

4.1

mA

No load condition, f = 20 MHz, Vdd = 1.8V

–

4.2

mA

Vdd = 2.5V to 3.3V, OE = GND, Output in high-Z state

–

4.0

mA

Vdd = 1.8 V. OE = GND, Output in high-Z state

2.6

4.3

ST = GND, Vdd = 2.8V to 3.3V, Output is weakly pulled down

̅ ̅̅

A

1.4

2.5

ST = GND, Vdd = 2.5V, Output is weakly pulled down

̅ ̅̅

A

0.6

1.3

ST = GND, Vdd = 1.8V, Output is weakly pulled down

̅ ̅̅

A

LVCMOS Output Characteristics

–

1

1.3

–

55

2

2.5

2

–

%

ns

Vdd

All Vdds. See Duty Cycle definition in

Figure 3

and

Footnote 6

Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80%

Vdd =1.8V, 20% - 80%

Vdd = 2.25V - 3.63V, 20% - 80%

IOH = -4 mA (Vdd = 3.0V or 3.3V)

IOH = -3 mA (Vdd = 2.8V and Vdd = 2.5V)

IOH = -2 mA (Vdd = 1.8V)

IOL = 4 mA (Vdd = 3.0V or 3.3V)

IOL = 3 mA (Vdd = 2.8V and Vdd = 2.5V)

IOL = 2 mA (Vdd = 1.8V)

Operating Temperature Range

T_use

Supply Voltage

Vdd

Current Consumption

Idd

OE Disable Current

Standby Current

I_OD

I_std

Duty Cycle

Rise/Fall Time

DC

Tr, Tf

Output High Voltage

VOH

Output Low Voltage

VOL

–

10%

Vdd

Rev 1.04

January 30, 2018

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SiT1602B

Low Power, Standard Frequency Oscillator

Table 1. Electrical Characteristics (continued)

Parameters

Symbol

Min.

Typ.

–

87

–

1.8

12

14

0.5

1.3

Max.

–

30%

150

–

Unit

Pin 1, OE or ST

̅ ̅̅

Pin 1, OE or ST

̅ ̅̅

Pin 1, OE logic high or logic low, or ST logic high

̅ ̅̅

Pin 1, ST logic low

̅ ̅̅

Condition

Input Characteristics

Input High Voltage

Input Low Voltage

Input Pull-up Impedance

VIH

VIL

Z_in

70%

–

50

2

Startup Time

Enable/Disable Time

Resume Time

RMS Period Jitter

Peak-to-peak Period Jitter

RMS Phase Jitter (random)

–

T_pk

T_phj

–

Vdd

k

M

ms

ns

ms

ps

Startup and Resume Timing

T_start

T_oe

T_resume

T_jitt

5

138

5

Jitter

3

25

30

0.9

2

f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V

f = 75 MHz, Vdd = 1.8V

f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V

f = 75 MHz, Vdd = 1.8V

f = 75 MHz, Integration bandwidth = 900 kHz to 7.5 MHz

f = 75 MHz, Integration bandwidth = 12 kHz to 20 MHz

Measured from the time Vdd reaches its rated minimum value

f = 77.76 MHz. For other frequencies, T_oe = 100 ns + 3 *

cycles

Measured from the time ST pin crosses 50% threshold

̅ ̅̅

Table 2. Pin Description

Symbol

[1]

Functionality

Output Enable

H : specified frequency output

L: output is high impedance. Only output driver is disabled.

H : specified frequency output

L: output is low (weak pull down). Device goes to sleep mode. Supply

current reduces to I_std.

Any voltage between 0 and Vdd or Open : Specified frequency

output. Pin 1 has no function.

Electrical ground

Oscillator output

Power supply voltage

[2]

[1]

Top View

OE/ST/NC

VDD

1

OE/ST /NC

̅ ̅̅

Standby

No Connect

2

3

4

GND

OUT

VDD

Power

Output

Power

GND

OUT

Figure 1. Pin Assignments

Notes:

1. In OE or ST mode, a pull-up resistor of 10 kΩ or less is recommended if pin 1 is not externally driven. If pin 1 needs to be left floating, use the NC option.

̅ ̅̅

2. A capacitor of value 0.1 µF or higher between Vdd and GND is required.

Rev 1.04

Page 2 of 17

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SiT1602B

Low Power, Standard Frequency Oscillator

Table 3. Absolute Maximum Limits

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 rat ings.

Parameter

Storage Temperature

Vdd

Electrostatic Discharge

Soldering Temperature (follow standard Pb free

soldering guidelines)

Junction Temperature

[3]

Min.

-65

-0.5

–

Max.

150

4

2000

260

150

Unit

°C

V

°C

Note:

3. Exceeding this temperature for extended period of time may damage the device.

Table 4. Thermal Consideration

[4]

Package

7050

5032

3225

2520

2016

Note:

4. Refer to JESD51 for

JA

and

JC

definitions, and reference layout used to determine the

JA

and

JC

values in the above table.



JA, 4 Layer Board

(°C/W)

142

97

109

117

152



JA, 2 Layer Board

(°C/W)

273

199

212

222

252



JC, Bottom

(°C/W)

30

24

27

26

36

Table 5. Maximum Operating Junction Temperature

[5]

Max Operating Temperature (ambient)

70°C

85°C

Maximum Operating Junction Temperature

80°C

95°C

Note:

5. Datasheet specifications are not guaranteed if junction temperature exceeds the maximum operating junction temperature.

Table 6. Environmental Compliance

Parameter

Mechanical Shock

Mechanical Vibration

Temperature Cycle

Solderability

Moisture Sensitivity Level

Condition/Test Method

MIL-STD-883F, Method 2002

MIL-STD-883F, Method 2007

JESD22, Method A104

MIL-STD-883F, Method 2003

MSL1 @ 260°C

Rev 1.04

Page 3 of 17

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SiT1602B

Low Power, Standard Frequency Oscillator

Test Circuit and Waveform

[6]

Vdd

Vout

Test Point

tr

80% Vdd

tf

4

Power

Supply

0.1 uF

1

3

2

15pF

(including probe

and fixture

capacitance)

50%

20% Vdd

High Pulse

(TH)

Period

Low Pulse

(TL)

Vdd

OE/ST Function

1 kΩ

Figure 2. Test Circuit

Note:

6. Duty Cycle is computed as Duty Cycle = TH/Period.

Figure 3. Waveform

Timing Diagrams

90% Vdd

Vdd

50% Vdd

[7]

Pin 4 Voltage

T_start

No Glitch

during start up

ST Voltage

T_resume

CLK Output

HZ

T_start: Time to start from power-off

CLK Output

HZ

T_resume: Time to resume from ST

Figure 4. Startup Timing (OE/ ST̅ Mode)

̅ ̅

Figure 5. Standby Resume Timing ( ST̅ Mode Only)

̅ ̅

Vdd

50% Vdd

OE Voltage

T_oe

Vdd

OE Voltage

50% Vdd

T_oe

CLK Output

HZ

T_oe: Time to re-enable the clock output

CLK Output

HZ

T_oe: Time to put the output in High Z mode

Figure 6. OE Enable Timing (OE Mode Only)

Figure 7. OE Disable Timing (OE Mode Only)

Note:

7. SiT1602 has “no runt” pulses and “no glitch” output during startup or resume.

Rev 1.04

Page 4 of 17

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SiT1602B

Low Power, Standard Frequency Oscillator

Performance Plots

[8]

1.8

5.2

5.0

4.8

4.6

4.4

20

15

2.5

2.8

3.0

3.3

DUT1

DUT6

DUT2

DUT7

DUT3

DUT8

DUT4

DUT9

DUT5

DUT10

Frequency (ppm)

10

5

0

-5

Idd (mA)

4.2

4.0

3.8

3.6

3.4

3.2

3.0

10

20

30

40

50

60

70

80

-10

-15

-20

-40

-20

0

20

40

60

80

Figure 8. Idd vs Frequency

Figure 9. Frequency vs Temperature

1.8 V

2.5 V

2.8 V

3.0 V

3.3 V

4.0

3.5

55

54

53

RMS period jitter (ps)

3.0

2.5

2.0

1.5

1.0

0.5

46

0.0

10

20

30

40

50

60

70

80

45

10

20

30

40

50

60

70

80

Duty cycle (%)

52

51

50

49

48

47

Figure 10. RMS Period Jitter vs Frequency

Figure 11. Duty Cycle vs Frequency

1.8 V

2.5

2.5 V

2.8 V

3.0 V

3.3 V

2.5

1.8 V

2.5 V

2.8 V

3.0 V

3.3 V

2.0

Rise time (ns)

Fall time (ns)

1.5

1.0

0.5

0.0

-40

-15

10

35

60

85

0.0

-40

-15

10

35

60

85

Figure 12. 20%-80% Rise Time vs Temperature

Figure 13. 20%-80% Fall Time vs Temperature

Rev 1.04

Page 5 of 17

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