All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Discera, Inc. Discera 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
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Absolute Maximum Ratings
Item
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
ESD
HBM
MM
CDM
Ordering Code
Unit
V
V
°C
°C
°C
V
40sec max.
Min
-0.3
-0.3
-
-55
-
-
Max
+4.0
V
DD
+0.3
+150
+150
+260
4000
400
1500
Condition
Enable Modes
0: Enable/Standby
2: Enable/Disable
Temp Range
E: -20 to 70
I: -40 to 85
Packing
T: Tape & Reel
: Tube
DSC11
0
2
C I 5
Package
A: 7.0x5.0mm
B: 5.0x3.2mm
C: 3.2x2.5mm
-
156.2500
T
Freq (MHz)
156.2500
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
Note: 1000+ years of data retention on internal memory
Specifications
Parameter
Supply Voltage
1
Supply Current
V
DD
I
DD
Δf
Δf
t
SU
V
IH
V
IL
t
DA
t
EN
DSC1102
DSC1122
Pull-up resistor exist
40
56.5
V
DD
-1.08
-
800
250
10
48
2.5
200kHz to 20MHz @156.25MHz
100kHz to 20MHz @156.25MHz
12kHz to 20MHz @156.25MHz
0.25
0.38
1.7
460
52
58
-
V
DD
-1.55
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
0.75xV
DD
-
Condition
Min.
2.25
Typ.
Max.
3.6
0.095
22
±10
±25
±50
±5
5
-
0.25xV
DD
5
5
20
Unit
V
mA
20
Frequency Stability
Aging
Startup Time
2
Input Logic Levels
Input logic high
Input logic low
Output Disable Time
3
Output Enable Time
Enable Pull-Up Resistor
4
Supply Current
Output Logic Levels
Output logic high
Output logic low
Pk to Pk Output Swing
Output Transition time
3
Rise Time
Fall Time
Frequency
Output Duty Cycle
Period Jitter
Integrated Phase Noise
Notes:
1.
2.
3.
4.
ppm
ppm
ms
V
ns
ms
ns
kΩ
mA
V
mV
ps
MHz
%
ps
RMS
ps
RMS
LVPECL Outputs
I
DD
V
OH
V
OL
Output Enabled, R
L
=50Ω
R
L
=50Ω
Single-Ended
t
R
t
F
f
0
SYM
J
PER
J
PH
20% to 80%
R
L
=50Ω, C
L
= 0pF
Single Frequency
Differential
2
Pin 6 V
DD
should be filtered with 0.1uf capacitor.
t
su
is time to 100ppm of output frequency after V
DD
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 Discera, Inc. Discera 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
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
Nominal Performance Parameters
(Unless specified otherwise: T=25° C, V
DD
=3.3 V)
0
-10
2.5
50-mV
Phase Jitter (ps RMS)
156MHz-LVPECL
2.0
Rejection (dBc)
-20
-30
100-mV
212MHz-LVPECL
320MHz-LVPECL
1.5
410MHz-LVPECL
-40
-50
-60
-70
-80
0.1
1
10
100
1000
10000
1.0
0.5
0.0
0
200
400
600
800
1000
Supply Noise Frequency (kHz)
Low-end of integration BW: x kHz to 20 MHz
Power supply rejection ratio
Phase jitter (integrated phase noise)
Output Waveform
t
R
t
F
Output
Output
80
%
50%
20%
830 mv
1/
f
o
t
EN
t
DA
V
IH
Enable
V
IL
Typical Termination Scheme
V
DD
V
DD
0.1uF
130 Ω
6
2
3
5
4
130 Ω
100 Ω
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 Discera, Inc. Discera 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
DSC1102
Test Circuit
DSC1122
Low-Jitter Precision LVPECL Oscillator
LVPECL
I
DD
LVPECL
6
1
5
2
4
3
50Ω
50Ω
V
DD
0.1uF
0.01uF
V
DA
V
TT
V
TT
= V
DD
- 2.0V
Solder Reflow Profile
ax
260
°
C
Temperature (°C)
cM
.
20-40
Sec
217
°
C
200
°
C
ax
.
60-150
Sec
150
°
C
3C
/Se
60-180
Sec
cM
Reflow
Pre heat
8 min max
Cool
Time
25
°
C
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.
3C
/
Se
S
S
S
6C
6C
6C/
M
cM
cM
ec
a.
a.
a x.
External Dimensions
Package Dimensions
units: mm[inch]
7.00
5
4
4
2.54
7.0 x 5.0
1.40
mm Plastic Package
5
6
1.10
5.00
3.70
1.80
2
3
3
2
1
2.80
0.85
No.
1
2
3
4
5
6
Pin terminal
Enable
nc
GND
Output
Output
VDD
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Discera, Inc. Discera 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
DSC1102
DSC1122
Low-Jitter Precision LVPECL Oscillator
5.0 x 3.2 mm Plastic Package
3.2 x 2.5 mm Plastic Package
DISCERA, Inc.
●
Phone: +1 (408) 432-8600
1961 Concourse Drive,
San Jose, California
95131
●
Fax: +1 (408) 432-8609 ● Email: sales@discera.com
●
●
USA
www.discera.com
All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written permission of Discera, Inc. Discera 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.
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