DSC8122BI1-T [MICREL]
Programmable Low-Jitter Precision LVPECL Oscillator;型号: | DSC8122BI1-T |
厂家: | MICREL SEMICONDUCTOR |
描述: | Programmable Low-Jitter Precision LVPECL Oscillator |
文件: | 总6页 (文件大小:605K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
DSC8102 DSC8122
Programmable Low-Jitter Precision LVPECL Oscillator
General Description
Features
The DSC8102 & DSC8122 series of high
performance field-programmable oscillators
utilizes a proven silicon MEMS technology to
provide excellent jitter and stability over a
Low RMS Phase Jitter: <1 ps (typ)
High Stability: ±10, ±25, ±50 ppm
Wide Temperature Range
o Industrial: -40° to 85° C
o Ext. commercial: -20° to 70° C
wide
range
of
supply
voltages
and
temperatures.
Using the TIMEFLASH
programmer, the end user can easily
program the oscillators’ frequency in the field
for immediate testing or use in advance
prototype development or production.
High Supply Noise Rejection: -50 dBc
Short Lead Time: 2 Weeks
Wide Freq. Range: 10 to 460 MHz
DSC8102 has a standby feature allowing it to
completely power-down when EN pin is
pulled low; whereas for DSC8122, only the
outputs are disabled when EN is low. Both
oscillators are available in industry standard
packages, including the small 3.2x2.5 mm2,
and are “drop-in” replacement for standard
6-pin LVPECL quartz oscillators.
Small Industry Standard Footprints
o 2.5x2.0, 3.2x2.5, 5.0x3.2, & 7.0x5.0 mm
Excellent Shock & Vibration Immunity
o Qualified to MIL-STD-883
High Reliability
o 20x better MTF than quartz oscillators
Low Current Consumption
Supply Range of 2.25 to 3.6 V
Standby & Output Enable Function
Lead Free & RoHS Compliant
LVDS & HCSL Versions Available
Block Diagram
Applications
Storage Area Networks
o SATA, SAS, Fibre Channel
Passive Optical Networks
o EPON, 10G-EPON, GPON, 10G-PON
Ethernet
o 1G, 10GBASE-T/KR/LR/SR, and FCoE
HD/SD/SDI Video & Surveillance
PCI Express: Gen 1 & Gen 2
DisplayPort
Output Enable Modes
EN Pin
High
NC
DSC8102
Outputs Active
Outputs Active
Standby
DSC8122
Outputs Active
Outputs Active
Outputs Disabled
Low
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 1 |
MK-Q-B-P-D-110410-02-2
Programmable Low-Jitter Precision LVPECL Oscillator
DSC8102 DSC8122
Absolute Maximum Ratings
Ordering Code
Item
Min
-0.3
-0.3
-
Max
+4.0
Unit Condition
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
V
Enable Modes
0: Enable/Standby
2: Enable/Disable
Temp Range
E: -20 to 70
I: -40 to 85
Packing
T: Tape & Reel
: Tube
VDD+0.3
+150
V
°C
°C
°C
V
-55
-
+150
DSC81 0 2 C I 5
T
+260
40sec max.
Package
ESD
HBM
MM
-
A: 7.0x5.0mm
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
4000
400
B: 5.0x3.2mm
C: 3.2x2.5mm
D: 2.5x2.0 mm
CDM
1500
Note: 1000+ years of data retention on internal memory
Specifications
Parameter
Condition
Min.
Typ.
Max.
Unit
Supply Voltage1
VDD
IDD
2.25
3.6
V
EN pin low – outputs are disabled
DSC8102
Supply Current
0.095
22
mA
DSC8122
20
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
±10
±25
±50
Frequency Stability
Δf
ppm
Aging
Startup Time2
Δf
tSU
1 year @25°C
T=25°C
±5
5
ppm
ms
Input Logic Levels
Input logic high
Input logic low
VIH
VIL
0.75xVDD
-
-
V
0.25xVDD
Output Disable Time3
Output Enable Time
Enable Pull-Up Resistor4
tDA
5
ns
DSC8102
DSC8122
5
20
ms
ns
tEN
Pull-up resistor exist
LVPECL Outputs
40
kΩ
Supply Current
IDD
Output Enabled, RL=50Ω
56.5
58
mA
V
Output Logic Levels
Output logic high
Output logic low
VOH
VOL
RL=50Ω
VDD-1.08
-
-
VDD-1.55
Pk to Pk Output Swing
Output Transition time3
Rise Time
Single-Ended
800
250
mV
ps
20% to 80%
RL=50Ω, CL= 0pF
tR
tF
Fall Time
Frequency
f0
Single Frequency
Differential
10
48
460
52
MHz
%
Output Duty Cycle
Period Jitter
SYM
JPER
2.5
psRMS
200kHz to 20MHz @156.25MHz
100kHz to 20MHz @156.25MHz
12kHz to 20MHz @156.25MHz
0.25
0.38
1.7
Integrated Phase Noise
JPH
psRMS
2
Notes:
1.
Pin 6 VDD should be filtered with 0.1uf capacitor.
2.
3.
4.
tsu is time to 100ppm of output frequency after VDD is applied and outputs are enabled.
Output Waveform and Test Circuit figures below define the parameters.
Output is enabled if pad is floated or not connected.
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 2 |
MK-Q-B-P-D-110410-02-2
Programmable Low-Jitter Precision LVPECL Oscillator
DSC8102 DSC8122
Nominal Performance Parameters (Unless specified otherwise: T=25° C, VDD=3.3 V)
2.5
2.0
1.5
1.0
0.5
0.0
0
-10
-20
-30
-40
-50
-60
-70
-80
156MHz-LVPECL
212MHz-LVPECL
320MHz-LVPECL
410MHz-LVPECL
50-mV
100-mV
0
200
400
600
800
1000
0.1
1
10
100
1000
10000
Low-end of integration BW: x kHz to 20 MHz
Supply Noise Frequency (kHz)
Power supply rejection ratio
Phase jitter (integrated phase noise)
Output Waveform
tR
tF
Output
80%
50%
20%
830 mv
Output
tEN
1/fo
tDA
VIH
Enable
VIL
Typical Termination Scheme
VDD
VDD
0.1uF
130 Ω
130 Ω
6
5
2
3
100 Ω
4
82 Ω
82 Ω
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 3 |
MK-Q-B-P-D-110410-02-2
Programmable Low-Jitter Precision LVPECL Oscillator
DSC8102 DSC8122
Test Circuit
LVPECL
LVPECL
IDD
50Ω
50Ω
6
1
5
2
4
3
0.1uF
VDD
0.01uF
VDA
VTT
VTT=VDD-2.0V
Solder Reflow Profile
20-40
Sec
260°C
MSL 1 @ 260°C refer to JSTD-020C
Ramp-Up Rate (200°C to Peak Temp) 3°C/Sec Max.
217°C
200°C
60-150
Sec
Preheat Time 150°C to 200°C
Time maintained above 217°C
Peak Temperature
Time within 5°C of actual Peak
Ramp-Down Rate
60-180 Sec
60-150 Sec
255-260°C
20-40 Sec
6°C/Sec Max.
8 min Max.
Reflow
60-180
Sec
150°C
Cool
Pre heat
Time 25°C to Peak Temperature
25°C
Time
8 min max
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 4 |
MK-Q-B-P-D-110410-02-2
Programmable Low-Jitter Precision LVPECL Oscillator
DSC8102 DSC8122
Package Dimensions
7.0 x 5.0 mm Plastic Package
No.
1
2
Pin terminal
Enable
nc
3
GND
4
Output
5
6
Output
VDD
5.0 x 3.2 mm Plastic Package
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 5 |
MK-Q-B-P-D-110410-02-2
Programmable Low-Jitter Precision LVPECL Oscillator
DSC8102 DSC8122
3.2 x 2.5 mm Plastic Package
2.5 x 2.0 mm Plastic Package
2.5±0.05 [0.098±0.002]
0.825 [ .032 ]
0.7±0.10 [0.028±0.004]
0.1 [.004] REF
0.375 [0.015]
0.65±0.05 [0.026±0.002]
2.0±0.05 [0.079±0.002]
0.25±0.05 [0.099±0.002]
0.85 [0.033]
0.70 [0.028]
0.65 [0.026]
0.25 [0.0098]
Disclaimer:
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, Inc.
Phone: +1 (408) 944-0800
●
●
2180 Fortune Drive,
Fax: +1 (408) 474-1000
San Jose, California
95131
●
●
USA
●
Email: hbwhelp@micrel.com
www.micrel.com
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Micrel, Inc. Micrel Inc. may update or make changes
to the contents, products, programs or services described at any time without notice. This document neither states nor implies any kind of warranty, including, but not limited to
implied warranties of merchantability or fitness for a particular use.
Page 6 |
MK-Q-B-P-D-110410-02-2
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