SiT2024B
Automotive AEC-Q100 SOT23 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
5-pin SOT23-5 package: 2.9 x 2.8 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
-40
-40
-40
-55
Supply Voltage
Current Consumption
Vdd
Idd
1.62
2.25
–
–
Duty Cycle
Rise/Fall Time
Output High Voltage
DC
Tr, Tf
VOH
45
–
–
90%
Typ.
–
Max.
110
Unit
MHz
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
–
+20
ppm
–
+25
ppm
–
+30
ppm
–
+50
ppm
Operating Temperature Range
–
+85
°C
–
–
+105
+125
°C
°C
Operating Temperature
Range (ambient)
T_use
Industrial, AEC-Q100 Grade 3
Extended Industrial, AEC-Q100 Grade 2
Automotive, AEC-Q100 Grade 1
–
+125
°C
Extended Temperature, AEC-Q100
Supply Voltage and Current Consumption
1.8
–
4.0
1.98
3.63
4.8
V
V
mA
All voltages between 2.25V and 3.63V including 2.5V, 2.8V, 3.0V
and 3.3V are supported.
No load condition, f = 20 MHz, Vdd = 2.25V to 3.63V
No load condition, f = 20 MHz, Vdd = 1.8V
3.8
4.5
mA
LVCMOS Output Characteristics
–
55
%
All Vdds
1.5
1.3
–
3
2.5
–
ns
ns
Vdd
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)
Pin 1, OE
Pin 1, OE
Pin 1, OE logic high or logic low
Measured from the time Vdd reaches its rated minimum value
f = 110 MHz. For other frequencies, T_oe = 100 ns + 3 * cycles
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
Output Low Voltage
VOL
–
–
10%
Vdd
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%
–
–
–
–
–
–
–
–
–
–
100
–
–
1.6
1.9
0.5
1.3
Input Characteristics
–
Vdd
30%
–
10
130
Jitter
2.5
3.0
–
–
Vdd
kΩ
ms
ns
ps
ps
ps
ps
Startup and Resume Timing
Rev 1.6
December 14, 2016
www.sitime.com
SiT2024B
Automotive AEC-Q100 SOT23 Oscillator
Table 2. Pin Description
Pin
1
2
Symbol
GND
NC
Power
No Connect
Output
Enable
No Connect
4
5
VDD
OUT
Power
Output
Functionality
Electrical ground
No connect
H
[1]
: specified frequency output
L: output is high impedance. Only output driver is disabled.
Any voltage between 0 and Vdd or Open : Specified
frequency output. Pin 3 has no function.
Power supply voltage
[2]
Oscillator output
OE/NC
3
4
[1]
Top View
GND
1
5
OUT
YXXXX
3
OE/NC
NC
2
VDD
Figure 1. Pin Assignments
Notes:
1. In OE or ST mode, a pull-up resistor of 10 kΩ or less is recommended if pin 3 is not externally driven. If pin 3 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.
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
V
°C
°C
Note:
3. Exceeding this temperature for extended period of time may damage the device.
Table 4. Thermal Consideration
[4]
Package
SOT23-5
θ
JA, 4 Layer Board
(°C/W)
421
θ
JC, Bottom
(°C/W)
175
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
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. 1.6
Page 2 of 15
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SiT2024B
Automotive AEC-Q100 SOT23 Oscillator
Test Circuit and Waveform
[6]
Test
Point
Vout
Vdd
tr
80% Vdd
tf
5
15 pF
(including probe
and fixture
capacitance)
4
0.1µF
Power
Supply
50%
20% Vdd
High Pulse
(TH)
Period
Vdd
1k
OE/ST Function
1
2
3
Low Pulse
(TL)
Figure 2. Test Circuit
Note:
6. Duty Cycle is computed as Duty Cycle = TH/Period.
Figure 3. Waveform
Timing Diagrams
90% Vdd
Vdd
Vdd
50% Vdd
Pin 4 Voltage
T_start
No Glitch
during start up
[7]
T_oe
OE Voltage
CLK Output
HZ
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. SiT2024 has “no runt” pulses and “no glitch” output during startup or resume.
Rev. 1.6
Page 3 of 15
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