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SiT8009B Datasheet Preview

SiT8009B Datasheet

Low Power Oscillator

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SiT8009B
High Frequency, Low Power Oscillator
ow Power, Standard Frequency Oscillator
Features
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 SiT8919 and SiT8921
Low power consumption of 4.9 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
RoHS and REACH compliant, Pb-free, Halogen-free and
Antimony-free
For AEC-Q100 oscillators, refer to SiT8924 and SiT8925
Applications
Ideal for GPON/EPON, network switches, routers,
servers, embedded systems
Ideal for Ethernet, PCI-E, DDR, etc.
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
Operating Temperature Range T_use
Supply Voltage
Vdd
Current Consumption
OE Disable Current
Standby Current
Duty Cycle
Rise/Fall Time
Output High Voltage
Output Low Voltage
Idd
I_OD
I_std
DC
Tr, Tf
VOH
VOL
Min.
115
-20
-25
-50
-20
-40
1.62
2.25
2.52
2.7
2.97
2.25
45
90%
Typ.
Max.
Unit
Condition
Frequency Range
137 MHz
Frequency Stability and Aging
+20 ppm Inclusive of Initial tolerance at 25°C, 1st year aging at 25°C,
+25 ppm and variations over operating temperature, rated power
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
6.2
7.5
mA
No load condition, f = 125 MHz, Vdd = 2.8V, 3.0V, 3.3V or
2.25 to 3.63V
5.5 6.4 mA No load condition, f = 125 MHz, Vdd = 2.5V
4.9 5.6 mA No load condition, f = 125 MHz, Vdd = 1.8V
4.2 mA Vdd = 2.5V to 3.3V, OE = GND, Output in high-Z state
4.0 mA Vdd = 1.8V, OE = GND, Output in high-Z state
2.6 4.3 A S̅ T̅ ̅ = GND, Vdd = 2.8V to 3.3V, Output is weakly pulled down
1.4 2.5 A S̅ T̅ ̅ = GND, Vdd = 2.5V, Output is weakly pulled down
0.6 1.3 A S̅ T̅ ̅ = GND, Vdd = 1.8V, Output is weakly pulled down
LVCMOS Output Characteristics
55 % All Vdds
1 2 ns Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80%
1.3 2.5
ns Vdd =1.8V, 20% - 80%
0.8 2 ns Vdd = 2.25V - 3.63V, 20% - 80%
– – Vdd IOH = -4 mA (Vdd = 3.0V or 3.3V)
10%
Vdd IOL = 4 mA (Vdd = 3.0V or 3.3V)
Rev 1.04
January 30, 2018
www.sitime.com




Sitime

SiT8009B Datasheet Preview

SiT8009B Datasheet

Low Power Oscillator

No Preview Available !

SiT8009B High Frequency, Low Power Oscillator
Table 1. Electrical Characteristics (continued)
Parameters
Input High Voltage
Input Low Voltage
Input Pull-up Impedance
Startup Time
Enable/Disable Time
Resume Time
RMS Period Jitter
Peak-to-peak Period Jitter
RMS Phase Jitter (random)
Symbol
Min.
VIH
VIL
Z_in
70%
50
2
T_start
T_oe
T_resume
T_jitt
T_pk
T_phj
Typ.
Max.
Unit
Condition
Input Characteristics
– – Vdd
30%
Vdd
Pin 1, OE or S̅ T̅ ̅
Pin 1, OE or S̅ T̅ ̅
87 150 k Pin 1, OE logic high or logic low, or ST logic high
– – M Pin 1, S̅ T̅ ̅ logic low
Startup and Resume Timing
5 ms Measured from the time Vdd reaches its rated minimum value
122 ns f = 137 MHz. For other frequencies, T_oe = 100 ns + 3 * cycles
5 ms Measured from the time S̅ T̅ ̅ pin crosses 50% threshold
Jitter
1.9 3 ps f = 125 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V
1.8 4 ps f = 125 MHz, Vdd = 1.8V
12 25 ps f = 125 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V
14 30 ps f = 125 MHz, Vdd = 1.8V
0.5 0.9 ps Integration bandwidth = 900 kHz to 7.5 MHz
1.3 2 ps Integration bandwidth = 12 kHz to 20 MHz
Table 2. Pin Description
Pin Symbol
Output Enable
1 OE/S̅ T̅ ̅ /NC
Standby
No Connect
2 GND
3 OUT
4 VDD
Power
Output
Power
Functionality
H[1]: specified frequency output
L: output is high impedance. Only output driver is disabled.
H[1]: 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[1]: Specified frequency
output. Pin 1 has no function.
Electrical ground
Oscillator output
Power supply voltage[2]
Top View
OE/ST/NC
Figure 1. Pin Assignments
Notes:
1. In OE or S̅ T̅ ̅ 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
www.sitime.com


Part Number SiT8009B
Description Low Power Oscillator
Maker Sitime
Total Page 17 Pages
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