SIT8008BI-13-XXE-25.000000 数据手册
SiT8008
Low Power Programmable Oscillator
The Smart Timing Choice
The Smart Timing Choice
Features
Applications
Any frequency between 1 MHz and 110 MHz accurate to 6 decimal
places
Ideal for DSC, DVC, DVR, IP CAM, Tablets, e-Books, SSD,
GPON, EPON, etc
Operating temperature from -40°C to 85°C. Refer to SiT8918 and
SiT8920 for high temperature options
Ideal for high-speed serial protocols such as: USB, SATA, SAS,
Firewire, 100M / 1G / 10G Ethernet, etc.
Excellent total frequency stability as low as ±20 PPM
Low power consumption of 3.6 mA typical
Programmable drive strength for improved jitter, system EMI
reduction, or driving large capacitive loads
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
Pb-free, RoHS and REACH compliant
Electrical Characteristics[1]
Parameter and Conditions
Symbol
Min.
Typ.
Max.
Unit
Condition
Frequency Range
Output Frequency Range
f
1
–
110
MHz
Frequency Stability and Aging
Frequency Stability
F_stab
-20
–
+20
PPM
-25
–
+25
PPM
–
+50
PPM
-50
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%).
Operating Temperature Range
Operating Temperature Range
T_use
-20
–
+70
°C
Extended Commercial
-40
–
+85
°C
Industrial
Supply Voltage and Current Consumption
Supply Voltage
Current Consumption
Vdd
Idd
1.62
1.8
1.98
V
2.25
2.5
2.75
V
Contact SiTime for 1.5V support
2.52
2.8
3.08
V
2.7
3.0
3.3
V
2.97
3.3
3.63
V
2.25
–
3.63
V
–
3.8
4.5
mA
No load condition, f = 20 MHz, Vdd = 2.8V, 3.0V, 3.3V, 2.25V to 3.63V
–
3.6
4.2
mA
No load condition, f = 20 MHz, Vdd = 2.5V
–
3.4
3.9
mA
No load condition, f = 20 MHz, Vdd = 1.8V
–
4
mA
Vdd = 2.5V to 3.3V, OE = GND, output is Weakly Pulled Down
Vdd = 1.8V, OE = GND, output is Weakly Pulled Down
OE Disable Current
I_OD
–
–
–
3.8
mA
Standby Current
I_std
–
2.6
4.3
A
ST = GND, Vdd = 2.8V to 3.3V, Output is Weakly Pulled Down
–
1.4
2.5
A
ST = GND, Vdd = 2.5V, Output is Weakly Pulled Down
0.6
1.3
A
ST = GND, Vdd = 1.8V, Output is Weakly Pulled Down
–
LVCMOS Output Characteristics
Duty Cycle
Rise/Fall Time
DC
45
–
55
%
Tr, Tf
–
1
2
ns
All Vdds
Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80%
–
1.3
2.5
ns
Vdd =1.8V, 20% - 80%
–
–
2
ns
Output High Voltage
VOH
90%
–
–
Vdd
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)
Vdd = 2.25V - 3.63V, 20% - 80%
Output Low Voltage
VOL
–
–
10%
Vdd
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)
Input High Voltage
VIH
70%
–
–
Vdd
Input Low Voltage
VIL
–
–
30%
Vdd
Pin 1, OE or ST
Input Pull-up Impedence
Z_in
–
87
100
k
Pin 1, OE logic high or logic low, or ST logic high
Input Characteristics
Pin 1, OE or ST
2
–
–
M
Pin 1, ST logic low
Note:
1. All electrical specifications in the above table are specified with 15 pF output load at default drive strength and for all Vdd(s) unless otherwise stated.
SiTime Corporation
Rev. 1.11
990 Almanor Avenue
Sunnyvale, CA 94085
(408) 328-4400
www.sitime.com
Revised May 27, 2013
SiT8008
Low Power Programmable Oscillator
The Smart Timing Choice
The Smart Timing Choice
Electrical Characteristics[1] (continued)
Parameter and Conditions
Symbol
Min.
Typ.
Max.
Unit
Condition
Startup and Resume Timing
Startup Time
T_start
–
–
5
ms
Measured from the time Vdd reaches its rated minimum value
T_oe
–
–
130
ns
f = 110 MHz. For other frequencies, T_oe = 100 ns + 3 * cycles
T_resume
–
–
5
ms
Measured from the time ST pin crosses 50% threshold
Enable/Disable Time
Resume Time
Jitter
RMS Period Jitter
T_jitt
RMS Phase Jitter (random)
T_phj
–
1.76
3
ps
f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V
–
1.78
3
ps
f = 75 MHz, Vdd = 1.8V
–
0.5
0.9
ps
f = 75 MHz, Integration bandwidth = 900 kHz to 7.5 MHz
–
1.3
2
ps
f = 75 MHz, Integration bandwidth = 12 kHz to 20 MHz
Note:
1. All electrical specifications in the above table are specified with 15 pF output load and for all Vdd(s) unless otherwise stated.
Pin Description
Pin
Symbol
Functionality
Output Enable
1
H or Open[2]: specified frequency output
L: output is high impedance. Only output driver is disabled.
Top View
[2]
OE/ ST
Standby
H or Open : specified frequency output
L: output is low (weak pull down). Device goes to sleep mode. Supply
current reduces to I_std.
OE/ST
1
4
VDD
GND
2
3
OUT
Electrical ground[3]
2
GND
Power
3
OUT
Output
Oscillator output
4
VDD
Power
Power supply voltage[3]
Notes:
2. A pull-up resistor of