SiT8924B

Automotive AEC-Q100 Oscillator

Features



Applications



AEC-Q100 with extended temperature range (-55°C to 125°C)

Frequencies between 1 MHz and 110 MHz accurate to

6 decimal places

Supply voltage of 1.8V or 2.25V to 3.63V

Excellent total frequency stability as low as ±20 ppm

Industry best G-sensitivity of 0.1 PPB/G

Low power consumption of 3.8 mA typical at 1.8V

LVCMOS/LVTTL 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

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

Antimony-free



Automotive, extreme temperature and other high-rel

electronics

Infotainment systems, collision detection devices, and

in-vehicle networking

Powertrain control

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

Frequency Stability

Symbol

f

F_stab

Min.

1

-20

-25

-30

-50

Operating Temperature

Range (ambient)

T_use

-40

-55

Supply Voltage

Current Consumption

Vdd

Idd

1.62

2.25

–

45

–

90%

Output Low Voltage

VOL

–

10%

Vdd

Typ.

–

Max.

110

+20

+25

+30

+50

+85

+105

+125

Unit

MHz

ppm

°C

Industrial, AEC-Q100 Grade 3

Extended Industrial, AEC-Q100 Grade 2

Automotive, AEC-Q100 Grade 1

Extended Temperature, AEC-Q100

Condition

Refer to

Table 13 and Table 14

for a list supported frequencies

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

variations over operating temperature, rated power supply

voltage and load (15 pF ± 10%).

Frequency Range

Frequency Stability and Aging

Operating Temperature Range

Supply Voltage and Current Consumption

All voltages between 2.25V and 3.63V including 2.5V, 2.8V, 3.0V

1.8

1.98

V

and 3.3V are supported.

–

3.63

V

4.0

4.8

mA

No load condition, f = 20 MHz, Vdd = 2.25V to 3.63V

3.8

4.5

mA

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

LVCMOS Output Characteristics

–

1.5

1.3

–

55

3

2.5

–

%

ns

Vdd

All Vdds

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

Vdd = 1.8V, 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)

Duty Cycle

Rise/Fall Time

Output High Voltage

DC

Tr, Tf

VOH

Input High Voltage

Input Low Voltage

Input Pull-up Impedence

Startup Time

Enable/Disable Time

RMS Period Jitter

RMS Phase Jitter (random)

VIH

VIL

Z_in

T_start

T_oe

T_jitt

T_phj

70%

–

Input Characteristics

–

Vdd

Pin 1, OE

–

30%

Vdd

Pin 1, OE

kΩ

100

–

Pin 1, OE logic high or logic low

Startup and Resume Timing

–

1.6

1.9

0.5

1.3

10

130

Jitter

2.5

3.0

–

ps

f = 75 MHz, 2.25V to 3.63V

f = 75 MHz, 1.8V

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

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

ms

ns

Measured from the time Vdd reaches its rated minimum value

f = 110 MHz. For other frequencies, T_oe = 100 ns + 3 * cycles

Rev 1.5

December 14, 2016

www.sitime.com

SiT8924B

Automotive AEC-Q100 Oscillator

Table 2. Pin Description

Symbol

Output

Enable

No Con-

nect

GND

OUT

VDD

[1]

Functionality

Output Enable

No Connect

Power

Output

Power

H : specified frequency output

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

Any voltage between 0 and Vdd or Open

[1]

: Specified frequency

output. Pin 1 has no function.

Electrical ground

[2]

Oscillator output

Power supply voltage

[2]

GND

OE/NC

Top View

1

4

1

VDD

2

3

4

2

3

OUT

Figure 1. Pin Assignments

Notes:

1. In OE mode, a pull-up resistor of 10k

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

option.

s s is re comme nde d if pin 1



or le

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 ratings.

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

θ

JA, 4 Layer Board

(°C/W)

142

97

109

117

152

θ

JA, 2 Layer Board

(°C/W)

273

199

212

222

252

θ

JC, Bottom

(°C/W)

30

24

27

26

36

Note:

4. Refer to JESD51 for

θJA

and

θJC

definitions, and reference layout used to determine the

θJA

and

θJC

values in the above table.

Table 5. Maximum Operating Junction Temperature

[5]

Max Operating Temperature (ambient)

85°C

105°C

125°C

Maximum Operating Junction Temperature

95°C

115°C

135°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

Rev. 1.5

Condition/Test Method

MIL-STD-883F, Method 2002

MIL-STD-883F, Method 2007

JESD22, Method A104

MIL-STD-883F, Method 2003

MSL1 @ 260°C

Page 2 of 17

www.sitime.com

SiT8924B

Automotive AEC-Q100 Oscillator

Test Circuit and Waveform

[6]

Vdd

Vout

Test

Point

tr

80% Vdd

50%

20% Vdd

High Pulse

(TH)

Period

tf

4

Power

Supply

0.1µF

3

15pF

(including probe

and fixture

capacitance)

1

2

Low Pulse

(TL)

Vdd

OE/NC Function

1k

Ω

Figure 2. Test Circuit

Note:

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

Figure 3. Waveform

Timing Diagrams

Vdd

90% Vdd

Vdd

50% Vdd

[7]

T_oe

OE Voltage

Pin 4 Voltage

T_start

No Glitch

during start up

CLK Output

HZ

T_start: Time to start from power-off

T_oe: Time to re-enable the clock output

Figure 4. Startup Timing (OE Mode)

Figure 5. OE Enable Timing (OE Mode Only)

Vdd

OE Voltage

50% Vdd

T_oe

CLK Output

HZ

T_oe: Time to put the output in High Z mode

Figure 6. OE Disable Timing (OE Mode Only)

Note:

7. SiT8924 has “no runt” pulses and “no glitch” output during startup or resume.

Rev. 1.5

Page 3 of 17

www.sitime.com

SiT8924B

Automotive AEC-Q100 Oscillator

Performance Plots

[8]

1.8 V

6.0

2.5 V

2.8 V

3V

3.3 V

DUT1

DUT8

DUT15

25

20

DUT2

DUT9

DUT16

DUT3

DUT10

DUT17

DUT4

DUT11

DUT18

DUT5

DUT12

DUT19

DUT6

DUT13

DUT20

DUT7

DUT14

5.5

Frequency (ppm)

0

20

40

60

80

100

5.0

15

10

5

0

-5

-10

-15

-20

Idd (mA)

4.5

4.0

3.5

3.0

-25

-55

-35

-15

5

25

45

65

85

105

125

Frequency (MHz)

Temperature (°C)

Figure 7. Idd vs Frequency

Figure 8. Frequency vs Temperature

1.8 V

4.0

3.5

2.5 V

2.8 V

3.0 V

3.3 V

55

54

53

1.8 V

2.5 V

2.8 V

3.0 V

3.3 V

RMS period jitter (ps)

3.0

2.5

2.0

1.5

1.0

0.5

46

Duty cycle (%)

0

20

40

60

80

100

52

51

50

49

48

47

0.0

45

0

20

40

60

80

100

Frequency (MHz)

Figure 9. RMS Period Jitter vs Frequency

Figure 10. 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

-20

0

20

40

60

80

100

120

0.0

-40

-20

0

20

40

60

80

100

120

Temperature (°C)

Figure 11. 20%-80% Rise Time vs Temperature

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

Rev. 1.5

Page 4 of 17

www.sitime.com

SiT8924B

Automotive AEC-Q100 Oscillator

Performance Plots

[8]

1.8 V

2.0

1.9

1.8

1.7

2.5 V

2.8 V

3.0 V

3.3 V

1.8 V

1.0

0.9

0.8

2.5 V

2.8 V

3.0 V

3.3 V

IPJ (ps)

1.6

1.5

1.4

1.3

1.2

1.1

1.0

10

20

30

40

50

60

70

80

90

100

110

IPJ (ps)

0.7

0.6

0.5

0.4

0.3

10

20

30

40

50

60

70

80

90

100

110

Frequency (MHz)

Figure 13. RMS Integrated Phase Jitter Random

(12 kHz to 20 MHz) vs Frequency

[9]

Figure 14. RMS Integrated Phase Jitter Random

(900 kHz to 20 MHz) vs Frequency

[9]

Notes:

8. All plots are measured with 15 pF load at room temperature, unless otherwise stated.

9. Phase noise plots are measured with Agilent E5052B signal source analyzer. Integration range is up to 5 MHz for carrier frequencies up to 40 MHz.

Rev. 1.5

Page 5 of 17

www.sitime.com

参数名称	属性值
Product Attribute	Attribute Value
制造商 Manufacturer	SiTime
产品种类 Product Category	Standard Clock Oscillators
RoHS	Details
频率 Frequency	68 MHz
频率稳定性 Frequency Stability	50 PPM
负载电容 Load Capacitance	15 pF
工作电源电压 Operating Supply Voltage	3.3 V
Output Format	LVCMOS
端接类型 Termination Style	SMD/SMT
封装 / 箱体 Package / Case	3.2 mm x 2.5 mm x 0.75 mm
最小工作温度 Minimum Operating Temperature	- 40 C
最大工作温度 Maximum Operating Temperature	+ 125 C
长度 Length	3.2 mm
宽度 Width	2.5 mm
高度 Height	0.75 mm
系列 Packaging	Reel
电流额定值 Current Rating	4 mA
类型 Type	Automotive and High Temperature Oscillator
占空比 - 最大 Duty Cycle - Max	55 %
工厂包装数量 Factory Pack Quantity	1000

SiT8924BA-23-33E-68.000000E

SiT8924BA-23-33E-68.000000E概述

SiT8924BA-23-33E-68.000000E规格参数

文档预览

推荐资源