DSC2311KI1-R0009T [MICREL]
Crystal-less⢠Configurable Clock Generator;
| 型号： | DSC2311KI1-R0009T |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | Crystal-less⢠Configurable Clock Generator |
| 文件： | 总5页 (文件大小：573K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DSC2311KL2-R0009
Crystal-less™ Configurable Clock Generator
General Description
Features
DSC2311KL2-R0009 is a crystal-less clock generator
that is factory configurable to simultaneously output
two separate frequencies from 2.3 to 170MHz. The
clock generator uses proven silicon MEMS
technology to provide low jitter and high frequency
stability across a wide range of supply voltages and
temperatures. By eliminating the external quartz
crystal, crystal-less clock generators significantly
• Two simultaneous LVCMOS outputs:
- 25MHz
• Low RMS phase jitter: <1ps (typical)
• ±25ppm frequency stability
• -40°C to +105°C ext. industrial temperature range
• High supply noise rejection: -50dBc
• High shock & vibration immunity
- Qualified to MIL-STD-883
• High reliability
- 20x higher MTBF than crystal-based clock
generator designs
enhance reliability
and
accelerate
product
development, while meeting stringent clock
performance criteria for a variety of consumer
electronics, communications, and storage applications.
DSC2311KL2-R0009 has an output enable/disable
feature allowing it to disable the outputs when OE is
low. The device is available in a space-saving 6-pin
2.5mm x 2.0mm TDFN package that needs only a
single external bypass capacitor. This requires a PCB
footprint equivalent to that of a 1.0mm x 1.0mm
crystal-based clock generator.
• Programmable output strength for EMI reduction
and signal integrity optimization
• Supply range of 2.25 to 3.6V
• AEC-Q100 automotive qualified
• 6-pin 2.5mm x 2.0mm TDFN package
Applications
• Consumer Electronics
• Camera and Imaging Modules
• Home Automation
• Industrial and Power Conversion
• Mobile Communications, Internet, and Sensor Devices
• Solid State, Hard Drive, and Flash Drive Storage
• Automotive
Block Diagram
Control Circuitry
CLK0
÷ M1
25MHz LVCMOS
MEMS
PLL
CLK1
÷ M2
25MHz LVCMOS
OE
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
March 06, 2015
2800
Revision 1.0
tcghelp@micrel.comor (408) 955-1690
Micrel, Inc.
DSC2311KL2-R0009
Ordering Information
Ordering Part Number
DSC2311KL2-R0009
DSC2311KL2-R0009T
Industrial Temperature Range
-40°C to +105°C
Shipping
Tube
Package
6-pin 2.5mm x 2.0mm TDFN
6-pin 2.5mm x 2.0mm TDFN
-40°C to +105°C
Tape and Reel
Devices are Green and RoHS compliant. Sample material may have only a partial top mark.
Pin Configuration
OE
VDD
DNC
CLK1
GND
CLK0
6-pin 2.5mm x 2.0mm TDFN
Pin Description
Pin Number
Pin Name
OE
Pin Type
Pin Level
Pin Function
1
2
3
4
5
6
I
Active high output enable for CLK0 and CLK1
Leave unconnected or connect to the ground
Power supply ground
DNC
GND
PWR
O
CLK0
CLK1
VDD
LVCMOS
LVCMOS
CLK0 output frequency = 25MHz
CLK1 output frequency = 25MHz
Power supply
O
PWR
March 06, 2015
2800
2
Revision 1.0
tcghelp@micrel.comor (408) 955-1690
Micrel, Inc.
DSC2311KL2-R0009
Specifications (Unless specified otherwise: T = 25°C, VDD = 3.3V)
Parameter
Symbol
VDD
Condition
Min.
Typ.
Max.
3.6
Units
Supply Voltage¹
Supply Current²
2.25
V
IDD
OE pin low - outputs are disabled
21
23
mA
Includes frequency variation due to initial
tolerance, temp. and power supply voltage
Frequency Stability6
F
±25
ppm
Aging
F
First year (@ 25°C)
T = 25°C
±5
5
ppm
ms
Startup Time³
tSU
Input Logic High
Input Logic Low
VIH
VIL
0.75 x VDD
-
-
V
0.25 x VDD
Output Disable Time4
Output Enable Time4
Pull-Up Resistor²
tDA
tEN
5
ns
ns
20
Pull-up exists on pin 1
I = ±6mA
40
kOhms
Output Logic High
Output Logic Low
VOH
VOL
0.9 x VDD
-
-
V
ns
0.1 x VDD
Output Transition Time4
Rise Time
tR
tF
20% to 80%
CL = 15pF
1.1
1.43
2
2
Fall Time
F0
F1
CLK0
CLK1
25
25
Frequency
MHz
Output Duty Cycle
Period Jitter5
SYM
JPER
45
55
2
%
CLK0 = CLK1 = 25MHz
3
psRMS
200kHz to 20MHz @ 25MHz
100kHz to 20MHz @ 25MHz
12kHz to 20MHz @ 25MHz
0.3
0.38
1.7
Integrated Phase Noise
JCC
psRMS
Notes:
1. Pin 4 VDD should be filtered with 0.1uF capacitor.
2. Output is enabled if OE pad is high or not connected. Supply current = Disabled Current + IDD from CLK0 + IDD from CLK1. See Current
Consumption graph on next page.
3. tSU is time to stable output frequency after VDD is applied and outputs are enabled.
4. See Figure 3 for detail (all based on maximum drive settings).
5. Period Jitter includes crosstalk from adjacent output.
6. For other ppm stabilities, contact the factory at MEMS_Support@micrel.com.
Absolute Maximum Ratings
Item
Min.
-0.3
-0.3
-
Max.
+4.0
Units
V
Condition
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
VDD + 0.3
+150
V
°C
°C
°C
-55
-
+150
+260
40sec max.
ESD
HBM
MM
4000
400
-
V
CDM
1500
March 06, 2015
2800
3
Revision 1.0
tcghelp@micrel.comor (408) 955-1690
Micrel, Inc.
DSC2311KL2-R0009
Current Consumption
Figure 1. Total Current = Disabled Current + IDD Fout1 + IDD Fout2
Solder Reflow Profile
Figure 2. Solder Reflow Profile
6 QFN MSL 1 @ 260°C refer to JSTD-020C
Ramp-Up Rate (200°C to Peak Temp)
Preheat Time 150°C to 200°C
Time maintained above 217°C
Peak Temperature
3°C/sec Max.
60 - 180 sec
60 - 150 sec
255 - 260°C
20 - 40 sec
Time within 5°C of actual Peak
Ramp-Down Rate
6°C/sec Max.
8 min Max.
Time 25°C to Peak Temperature
March 06, 2015
2800
4
Revision 1.0
tcghelp@micrel.comor (408) 955-1690
Micrel, Inc.
DSC2311KL2-R0009
OE Function and Output Waveform
Output
OE
Figure 3. OE Function and Output Waveform
Package Information7
6-pin TDFN (2.5mm x 2.0mm)
Note:
7. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data
sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right
to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel's terms and
conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty
relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose,
merchantability, or infringement of any patent, copyright or other intellectual property right.
Micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction
of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a)
are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected
to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices
or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale.
© 2015 Micrel, Incorporated.
March 06, 2015
2800
5
Revision 1.0
tcghelp@micrel.comor (408) 955-1690
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