DSC2311KE5-R0001T [MICROCHIP]
PLL BASED CLOCK DRIVER;
| 型号： | DSC2311KE5-R0001T |
| 厂家： | 
MICROCHIP |
| 描述： | PLL BASED CLOCK DRIVER 时钟 驱动 光电二极管 外围集成电路 |
| 文件： | 总5页 (文件大小：445K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DSC2311
Crystal-less™ Configurable Two Output Clock Generator
General Description
Features
The DSC2311 is a crystal-less clock
generator that is factory configurable to
Two Simultaneous CMOS Outputs:
o Output 1 Range: 2.3 to 170 MHz
simultaneously
output
two
separate
o
Output 2 Range: 2.3 to 170 MHz
frequencies from 2.3 to 170 MHz. The clock
generator uses proven silicon MEMS
technology to provide low jitter and high
frequency stability across a wide range of
Low RMS Phase Jitter: <1 ps (typ)
High Stability: ±10, ±25, ±50 ppm
supply voltages and temperatures.
By
Wide Temperature Range
o Automotive: -55° to 125° C
o Ext. Industrial: -40° to 105° C
o Industrial: -40° to 85° C
eliminating the external quartz crystal,
crystal-less clock generators significantly
enhance reliability and accelerate product
development, while meeting stringent clock
performance criteria for a variety of
consumer electronics, communications, and
storage applications.
o Ext. commercial: -20° to 70° C
High Supply Noise Rejection: -50 dBc
High Shock & Vibration Immunity
o Qualified to MIL-STD-883
DSC2311 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 2.5 x 2.0 mm crystal-
less TDFN package that uses only a single
external bypass capacitor. This requires a
PCB footprint equivalent to that of a 1.0 x
1.0 mm crystal-based clock generator.
High Reliability
o 20x higher MTBF than crystal-based
clock generator designs
Supply Range of 2.25 to 3.6 V
Short Lead Times: 2 Weeks
Lead Free & RoHS Compliant
Applications
Consumer Electronics
Camera and Imaging Modules
Home Automation
Block Diagram
Control Circuitry
Industrial and Power Conversion
Mobile Communications, Internet,
and Sensor Devices
Solid State, Hard Drive, and
Flash Drive Storage
CLK0
Output
Control
and
MEMS
PLL
Divider
OE
CLK1
______________________________________________________________________________________________________________________________________________
DSC2311 Page 1 MK-QB-P-D-130103-04
Crystal-less™ Configurable Two Output Clock Generator
DSC2311
Specifications (Unless specified otherwise: T=25° C, VDD =3.3V)
Parameter
Supply Voltage1
Condition
Min.
2.25
Typ.
Max.
3.6
Unit
V
VDD
IDD
EN pin high – outputs are enabled
CL=15pF, FO1=FO2=25 MHz
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
Supply Current2
25
28
mA
±10
±25
±50
±5
5
Frequency Stability
Aging
Startup Time3
Δf
ppm
Δf
tSU
1 year @25°C
T=25°C
ppm
ms
Input Logic Levels
Input logic high
Input logic low
VIH
VIL
0.75xVDD
-
-
V
0.25xVDD
Output Disable Time4
Output Enable Time
Pull-Up Resistor2
tDA
5
ns
ns
tEN
20
Pull-up exists on all digital IO
I=±6mA
40
kΩ
Output Logic Levels
Output logic high
Output logic low
Output Transition time4
Rise Time
VOH
VOL
0.9xVDD
-
-
V
0.1xVDD
20% to 80%
CL=15pf
tR
tF
1.1
1.4
2
2
ns
Fall Time
Commercial/Industrial temp range
Automotive temp range
2.3
45
170
100
55
Frequency
f0
MHz
Output Duty Cycle
Period Jitter5
SYM
JPER
%
psRMS
FO1=FO2=25 MHz
3
200kHz to 20MHz @ 25 MHz
100kHz to 20MHz @ 25 MHz
12kHz to 20MHz @ 25 MHz
0.3
0.38
1.7
Integrated Phase Noise
JCC
psRMS
2
Notes:
1.
Pin 4 VDD should be filtered with 0.01uf capacitor.
2.
3.
4.
5.
Output is enabled if Enable pad is floated or not connected.
tsu is time to 100PPM stable output frequency after VDD is applied and outputs are enabled.
Output Waveform and Test Circuit figures below define the parameters.
Period Jitter includes crosstalk from adjacent output.
Absolute Maximum Ratings
Item
Min
-0.3
-0.3
-
Max
Unit
V
Condition
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
+4.0
VDD+0.3
+150
V
°C
°C
°C
V
-55
-
+150
+260
40sec max.
ESD
HBM
MM
-
4000
400
CDM
1500
______________________________________________________________________________________________________________________________________________
DSC2311 Page 2 MK-QB-P-D-130103-04
Crystal-less™ Configurable Two Output Clock Generator
DSC2311
Solder Reflow Profile
20-40
Sec
260°C
217°C
200°C
60-150
Sec
Reflow
60-180
Sec
150°C
Cool
Pre heat
25°C
Time
8 min max
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
Time within 5°C of actual Peak
Ramp-Down Rate
3°C/Sec Max.
60-180 Sec
60-150 Sec
255-260°C
20-40 Sec
6°C/Sec Max.
8 min Max.
Time 25°C to Peak Temperature
OE Function and Output Waveform: LVCMOS
tR
tF
VOH
675 mV
Output
Enable
VOL
tEN
1/fo
tDA
VIH
VIL
______________________________________________________________________________________________________________________________________________
DSC2311 Page 3 MK-QB-P-D-130103-04
Crystal-less™ Configurable Two Output Clock Generator
DSC2311
Package Dimensions
EXTERNAL DIMENSIONS
Units: mm [ inches]
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
2.5±0.05 [0.098±0.002]
0.7±0.1 [0.079±0.002]
0.825 [0.032]
0.6 REF
Via to
Power Trace
6
5
4
4
5
6
0.375
Via to Ground
Plane
0.535 REF
0.765±0.1
0.7 REF
6
5
2
4
3
2
1
1
2
3
3
1
0.7±0.1 [0.079±0.002]
2.0±0.05 [0.079±0.002]
0.65±0.05 [0.026±0.002]
0.25±0.05 [0.099±0.002]
0.85
0.65±0.05 [0.026±0.002]
0.25±0.05 [0.099±0.002]
No.
1
Pin Terminal
Enable
N/C
0.85±0.05
2
3
Ground
CLK0
4
5
CLK1
6
VDD
Ordering Information
DSC2311
K I 2 - R0001 T
Package
K: 2520 6pin Dual Output
Packing
T: Tape & Reel
: Tube
Temp Range
E: -20 to 70
I: -40 to 85
L: -40 to 105
M: -55 to 125
Frequency Code
Rxxxx: Custom
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
______________________________________________________________________________________________________________________________________________
DSC2311 Page 4 MK-QB-P-D-130103-04
Crystal-less™ Configurable Two Output Clock Generator
DSC2311
Output Clock Frequencies
Output frequencies are factory configured to individual customer and product requirements, subject
to output control and divider limitations. Contact sales with your custom frequency needs.
Frequency Code
R0001
Freq out 1 MHz
Freq Out 2 MHz
127
25
127
125
R0002
Disclaimer:
Discera makes no warranty of any kind, express or implied, with regard to this material,
including, but not limited to, the implied warranties of merchantability and fitness for a
particular purpose. Discera reserves the right to make changes without further notice to
materials described herein. Discera does not assume any liability arising from the
application or use of any product or circuit described herein. Discera does not authorize its
products for use a critical components in life-support systems where a malfunction or
failure may reasonably be expected to result in significant injury to the user. The inclusion
of Discera’s product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Discera against all charges.
DISCERA, Inc.
Phone: +1 (408) 432-8600
●
1961 Concourse Drive,
San Jose, California
95131
●
●
USA
●
Fax: +1 (408) 432-8609
●
Email: sales@discera.com
www.discera.com
______________________________________________________________________________________________________________________________________________
DSC2311 Page 5 MK-QB-P-D-130103-04
相关型号：
©2020 ICPDF网 联系我们和版权申明