Micrel DSC1103CE1 Low-jitter precision lvds oscillator Datasheet

DSC1103
DSC1123
Low-Jitter Precision LVDS Oscillator
General Description
Features
The DSC1103 & DSC1123 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.
DSC1103 has a standby feature allowing it to
completely power-down when EN pin is
pulled low; whereas for DSC1123, 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 LVDS 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
 LVPECL & HCSL Versions Available
Applications
Output Enable Modes
EN Pin
High
NC
Low
DSC1103
Outputs Active
Outputs Active
Standby
DSC1123
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
_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 1
MK-Q-B-P-D-110410-03-6
DSC1103
DSC1123
Low-Jitter Precision LVDS 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 3 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
Condition
Supply Voltage1
VDD
Supply Current
IDD
EN pin low – outputs are disabled
DSC1103
DSC1123
Frequency Stability
Δf
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
Aging
Startup Time2
Δf
tSU
1 year @25°C
T=25°C
Input Logic Levels
Input logic high
Input logic low
VIH
VIL
Output Disable Time3
tDA
Output Enable Time
tEN
Enable Pull-Up Resistor4
Min.
Typ.
2.25
20
Max.
Unit
3.6
V
0.095
22
mA
±10
±25
±50
±5
5
0.75xVDD
-
DSC1103
DSC1123
Pull-up resistor exist
ppm
ppm
ms
0.25xVDD
V
5
ns
5
20
ms
ns
40
kΩ
LVDS Outputs
Supply Current
IDD
Output Enabled, RL=100Ω
Output offset Voltage
VOS
R=100Ω Differential
Delta Offset Voltage
∆VOS
Pk to Pk Output Swing
Output Transition time
Rise Time
Fall Time
VPP
3
Frequency
tR
tF
29
1.125
32
mA
1.4
V
50
mV
Single-Ended
350
mV
20% to 80%
RL=50Ω, CL= 2pF
200
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
0.28
0.4
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.
_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 2
MK-Q-B-P-D-110410-03-6
DSC1103
DSC1123
Low-Jitter Precision LVDS 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-LVDS
50-mV
-30
-40
-50
-60
212MHz-LVDS
2.0
320MHz-LVDS
1.5
410MHz-LVDS
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)
Phase jitter (integrated phase noise)
Power supply rejection ratio
Output Waveform
tR
Output
tF
80%
350mv
mV
830
50%
Output
20%
tEN
1/f o
tDA
VIH
Enable
VIL
Typical Termination Scheme
VDD
0.1uF
6
2
5
3
4
100 Ω
100 Ω
_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 3
MK-Q-B-P-D-110410-03-6
DSC1103
DSC1123
Low-Jitter Precision LVDS Oscillator
Test Circuit
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
_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 4
MK-Q-B-P-D-110410-03-6
DSC1103
DSC1123
Low-Jitter Precision LVDS 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]
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
2.54[0.100]
3.7 [0.146] REF
5
4
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]
_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 5
MK-Q-B-P-D-110410-03-6
DSC1103
DSC1123
Low-Jitter Precision LVDS 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]
_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 6
MK-Q-B-P-D-110410-03-6
DSC1103
DSC1123
Low-Jitter Precision LVDS Oscillator
7.0 x 5.0 mm Plastic Package
EXTERNAL DIMENSIONS
RECOMMENDED SOLDER PAD LAYOUT
Units: mm [ inches]
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,
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Phone: +1 (408) 944-0800
●
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Fax: +1 (408) 474-1000
San Jose, California
95131
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_____________________________________________________________________________________________________________________________ _________________
DSC1103 | DSC1123
Page 7
MK-Q-B-P-D-110410-03-6
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