Micrel DSC1122CE5 Low-jitter precision lvpecl oscillator Datasheet

DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Features
General Description
The DSC1102 & DSC1122 series of high
performance oscillators utilizes a proven
silicon MEMS technology to provide excellent
jitter and stability over a wide range of
supply voltages and temperatures.
By
eliminating the need for quartz or SAW
technology, MEMS oscillators significantly
enhance reliability and accelerate product
development, while meeting stringent clock
performance criteria for a variety of
communications, storage, and networking
applications.
DSC1102 has a standby feature allowing it to
completely power-down when EN pin is
pulled low; whereas for DSC1122, 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” replacements for standard
6-pin LVPECL quartz crystal oscillators.
 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
 High Supply Noise Rejection: -50 dBc
 Short Lead Time: 2 Weeks
 Wide Freq. Range: 2.3 to 460 MHz
 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
Block Diagram
 Lead Free & RoHS Compliant
 LVDS & HCSL Versions Available
Applications
Output Enable Modes
EN Pin
High
NC
Low
DSC1102
Outputs Active
Outputs Active
Standby
DSC1122
Outputs Active
Outputs Active
Outputs Disabled
 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
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 1
MK-Q-B-P-D-110410-02-6
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Absolute Maximum Ratings
Ordering Code
Item
Min
Max
Unit
Supply Voltage
-0.3
+4.0
V
Input Voltage
-0.3
VDD+0.3
V
Junction Temp
-
+150
°C
Storage Temp
-55
+150
°C
Soldering Temp
-
+260
°C
ESD
HBM
MM
CDM
-
Condition
Enable Modes
0: Enable/Standby
2: Enable/Disable
DSC11 0 2 C I 5
40sec max.
V
Temp Range
E: -20 to 70
I: -40 to 85
L: -40 to 105
-
Package
A: 7.0x5.0mm
B: 5.0x3.2mm
C: 3.2x2.5mm
D: 2.5x2.0mm
N: 7.0x5.0mm (no center pad)
4000
400
1500
Packing
T: Tape & Reel
: Tube
125.0000
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
T
Freq (MHz)
125.0000
Note: 1000+ years of data retention on internal memory
Specifications
Parameter
Supply Voltage
1
Supply Current
Condition
VDD
IDD
Frequency Stability
Δf
Aging
Startup Time2
Input Logic Levels
Input logic high
Input logic low
Δf
tSU
VIH
VIL
Output Disable Time3
tDA
Output Enable Time
tEN
Enable Pull-Up Resistor4
Min.
Typ.
2.25
EN pin low – outputs are disabled
DSC1102
DSC1122
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
1 year @25°C
T=25°C
20
0.75xVDD
-
Unit
3.6
V
0.095
22
±10
±25
±50
±5
5
mA
0.25xVDD
DSC1102
DSC1122
Pull-up resistor exist
Max.
ppm
ppm
ms
V
5
ns
5
20
ms
ns
40
kΩ
LVPECL Outputs
Supply Current
IDD
Output Enabled, RL=50Ω
Output Logic Levels
Output logic high
Output logic low
VOH
VOL
RL=50Ω
Pk to Pk Output Swing
Output Transition time3
Rise Time
Fall Time
Frequency
tR
tF
56.5
VDD-1.08
-
58
mA
VDD-1.55
V
Single-Ended
800
mV
20% to 80%
RL=50Ω, CL= 0pF
250
ps
f0
Single Frequency
2.3
460
MHz
Output Duty Cycle
SYM
Differential
48
52
%
Period Jitter
JPER
Integrated Phase Noise
JPH
Notes:
1.
2.
3.
4.
2.5
200kHz to 20MHz @156.25MHz
100kHz to 20MHz @156.25MHz
12kHz to 20MHz @156.25MHz
0.25
0.38
1.7
psRMS
2
psRMS
Pin 6 VDD should be filtered with 0.1uf capacitor.
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.
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 2
MK-Q-B-P-D-110410-02-6
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Nominal Performance Parameters (Unless specified otherwise: T=25° C, VDD=3.3 V)
2.5
0
-10
100-mV
-20
Phase Jitter (ps RMS)
Rejection (dBc)
156MHz-LVPECL
50-mV
-30
-40
-50
-60
212MHz-LVPECL
2.0
320MHz-LVPECL
1.5
410MHz-LVPECL
1.0
0.5
-70
0.0
-80
0.1
1
10
100
1000
0
10000
200
400
600
800
1000
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
Output
tF
80%
830 mv
50%
Output
20%
tEN
1/f o
tDA
VIH
Enable
VIL
Typical Termination Scheme
VDD
VDD
0.1uF
130 Ω
130 Ω
6
2
5
3
4
100 Ω
82 Ω
82 Ω
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 3
MK-Q-B-P-D-110410-02-6
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Test Circuit
LVPECL
IDD
VDD
LVPECL
0.1uF
6
5
4
1
2
3
VDA
50Ω
50Ω
0.01uF
VTT
VTT= VDD- 2.0V
Solder Reflow Profile
20-40
Sec
Se
3C
/
217°C
200°C
60-150
Sec
S
6C/
ax
cM
Se
3C
/
25°C
60-180
Sec
Pre heat
8 min max
Reflow
x.
150°C
Ma
.
ec
Temperature (°C)
cM
ax
.
260°C
Cool
MSL 1 @ 260°C refer to JSTD-020C
Ramp-Up Rate (200°C to Peak Temp) 3°C/Sec Max.
Preheat Time 150°C to 200°C
60-180 Sec
Time maintained above 217°C
60-150 Sec
255-260°C
Peak Temperature
Time within 5°C of actual Peak
20-40 Sec
6°C/Sec Max.
Ramp-Down Rate
Time 25°C to Peak Temperature
8 min Max.
Time
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 4
MK-Q-B-P-D-110410-02-6
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Package Dimensions
7.0 x 5.0 mm Plastic Package
EXTERNAL DIMENSIONS
Units: mm [ inches]
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
Via to Ground
Plane
1.4±0.10 [0.055±0.004]
2.54 [0.100]
2.54[0.100]
6
1
2
3
1.8 [0.071]
3
2
2.8 [0.110]
5±0.10 [0.197±0.004]
1
No.
1
2
3
4
5
6
0.85±0.05
Pin Terminal
Enable
N/C
Ground
OUT
OUTVDD
TIE TO GND
PAD
6
5
4
1
2
3
2.6 [0.102]
5
1.4 [0.055]
4
4
3.7 [0.146] REF
5
1.1±0.01[0.43±0.004]
7±0.10 [0.276±0.004]
6
Via to Power
Trace
1.4 [0.055]
5.0 x 3.2 mm Plastic Package
EXTERNAL DIMENSIONS
Units: mm [ inches]
1.27 [0.050]
5±0.05 [0.197±0.002]
5
4
4
5
1
2
3
Via to Power
Trace
1.27[0.05]
0.64±0.05
6
1.2 [0.047] REF
6
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
Via to Ground
Plane
3
5
4
1
2
3
2
1
0.7±0.1 [0.079±0.002]
3.2±0.05 [0.126±0.002]
0.85±0.05
6
1.2 [0.047] REF
No.
1
2
3
4
5
Pin Terminal
Enable
N/C
Ground
OUT
OUT-
6
VDD
1.1 [ 0.043]
0.64 [0.025]
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 5
MK-Q-B-P-D-110410-02-6
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
3.2 x 2.5 mm Plastic Package
EXTERNAL DIMENSIONS
Units: mm [ inches]
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
Via to Power
Trace
3.2±0.05 [0.126±0.002]
1.05 [0.041]
0.7±0.1 [0.079±0.002]
6
5
4
4
5
0.375
Via to Ground
Plane
6
0.9 [0.035] REF
0.9 [0.035] REF
6
5
4
1
2
3
1 [ 0.039]
1
2
3
3
2.5±0.05 [0.098±0.002]
2
1
0.1[0.004] REF
0.9±0.05 [0.035±0.002]
0.5 [0.197]
0.9 [0.035]
0.5±0.05 [0.198±0.002]
No.
1
2
3
4
5
6
0.85±0.05
Pin Terminal
Enable
N/C
Ground
OUT
OUTVDD
2.5 x 2.0 mm Plastic Package
EXTERNAL DIMENSIONS
Units: mm [ inches]
2.5±0.05 [0.098±0.002]
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
0.7±0.1 [0.079±0.002]
0.825 [0.032]
6
5
4
4
5
Via to
Power Trace
6
0.375
Via to Ground
Plane
0.6 REF
0.535 REF
0.7 REF
1
2
3
0.7±0.1 [0.079±0.002]
3
2
1
0.765±0.1
6
5
4
1
2
3
2.0±0.05 [0.079±0.002]
0.65±0.05 [0.026±0.002]
0.85±0.05
0.25±0.05 [0.099±0.002]
No.
1
2
3
4
5
Pin Terminal
Enable
N/C
Ground
OUT
OUT-
6
VDD
0.85
0.65±0.05 [0.026±0.002]
0.25±0.05 [0.099±0.002]
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 6
MK-Q-B-P-D-110410-02-6
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
7.0 x 5.0 mm Plastic Package
EXTERNAL DIMENSIONS
Units: mm [ inches]
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
Via to Ground
Plane
1.4±0.10 [0.055±0.004]
2.54 [0.100]
2.54[0.100]
6
1.1±0.01[0.43±0.004]
5
1
2
3
3
2
1
6
5
4
1
2
3
2.6 [0.102]
4
4
3.7 [0.146] REF
5
1.4 [0.055]
7±0.10 [0.276±0.004]
6
Via to Power
Trace
5±0.10 [0.197±0.004]
No.
1
2
3
4
5
6
0.85±0.05
Pin Terminal
Enable
N/C
Ground
OUT
OUTVDD
1.4 [0.055]
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
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Phone: +1 (408) 944-0800
●
●
2180 Fortune Drive,
Fax: +1 (408) 474-1000
San Jose, California
95131
● Email: [email protected]
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www.micrel.com
_____________________________________________________________________________________________________________________________ _________________
DSC1102 | DSC1122
Page 7
MK-Q-B-P-D-110410-02-6
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