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-110410-01-2
DSC1101
DSC1121
Low-Jitter Precision CMOS 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
L: -40 to 105
M: -55 to 125
Packing
T: Tape & Reel
: Tube
DSC11
0
1
C I 5
Package
A: 7.0x5.0mm
B: 5.0x3.2mm
C: 3.2x2.5mm
-
125.0000
T
Freq (MHz)
125.0000
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
Note: 1000+ years of data retention on internal memory
Specifications
Parameter
Supply Voltage
1
Supply Current
Frequency Stability
Ext Comm. & Ind. only
All temp ranges
All temp ranges
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
V
DD
I
DD
EN pin low – output is disabled
DSC1101
DSC1121
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
1 year @25°C
T=25°C
0.75xV
DD
-
DSC1101
DSC1121
Pull-up resistor exist
40
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
Δf
Δf
t
SU
V
IH
V
IL
t
DA
t
EN
ppm
ppm
ms
V
ns
ms
ns
kΩ
CMOS Output
Supply Current
4
Output Logic Levels
Output logic high
Output logic low
Output Transition time
3
Rise Time
Fall Time
Frequency
Output Duty Cycle
Period Jitter
Integrated Phase Noise
1.
2.
3.
4.
I
DD
V
OH
V
OL
t
R
t
F
f
0
SYM
J
PER
J
PH
output is enabled
C
L
=15pF, F
0
=125 MHz
I=±6mA
20% to 80%
C
L
=15pF
All temp range except Auto
Auto temp range
Fout=125MHz
200kHz to 20MHz @ 125MHz
100kHz to 20MHz @ 125MHz
12kHz to 20MHz @ 125MHz
10
45
0.9xV
DD
-
31
35
-
0.1xV
DD
mA
V
1.1
1.3
2
2
170
100
55
ns
MHz
%
ps
RMS
ps
RMS
3
0.3
0.38
1.7
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-110410-01-2
DSC1101
DSC1121
Low-Jitter Precision CMOS Oscillator
Nominal Performance Parameters
(Unless specified otherwise: T=25° C, V
DD
=3.3 V)
0
2.5
-10
50-mV
100-mV
25MHz-CMOS
Phase Jitter (ps RMS)
2.0
50MHz-CMOS
106MHz-CMOS
125MHz-CMOS
Rejection (dBc)
-20
-30
-40
-50
-60
-70
-80
1.5
1.0
0.5
0.0
0.1
0
200
400
600
800
1000
1
10
100
1000
10000
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
V
OH
t
F
Output
V
OL
1/f
o
t
DA
V
IH
t
EN
Enable
V
IL
Typical Termination Scheme
V
DD
0.1uF
6
2
3
5
4
C
L
CMOS load
capacitance
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-110410-01-2
DSC1101
Test Circuit
DSC1121
Low-Jitter Precision CMOS Oscillator
I
DD
4
6
5
2
3
4
V
DD
0.1uF
1
1
2
3
15pF
V
DA
Board Layout (recommended)
Solder Reflow Profile
ax
260
°
C
Temperature (°C)
Se
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
/
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-110410-01-2
S
S
S
6C
6C
6C/
M
cM
cM
ec
a.
a.
a x.
DSC1101
DSC1121
Low-Jitter Precision CMOS Oscillator
Package Dimensions
7.0 x 5.0 mm Plastic Package
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 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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