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-110410-01-2
Programmable Low-Jitter Precision CMOS Oscillator
DSC8112
1
Absolute Maximum Ratings
Ordering Code
Item
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
ESD
HBM
MM
CDM
DSC8101
Min
-0.3
-0.3
-
-55
-
-
Max
+4.0
V
DD
+0.3
+150
+150
+260
4000
400
1500
Unit
V
V
°C
°C
°C
V
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
40sec max.
DSC81
0
1
C I 5
Package
A: 7.0x5.0mm
B: 5.0x3.2mm
C: 3.2x2.5mm
D: 2.5x2.0mm
-
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
T
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
DSC8101
DSC8121
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
1 year @25°C
T=25°C
0.75xV
DD
-
DSC8101
DSC8121
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 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-110410-01-2
Programmable Low-Jitter Precision CMOS Oscillator
DSC8112
1
Nominal Performance Parameters
(Unless specified otherwise: T=25° C, V
DD
=3.3 V)
2.5
DSC8101
0
25MHz-CMOS
Phase Jitter (ps RMS)
2.0
-10
50-mV
100-mV
50MHz-CMOS
106MHz-CMOS
Rejection (dBc)
1000
-20
-30
-40
-50
-60
-70
1.5
125MHz-CMOS
1.0
0.5
0.0
-80
0
200
400
600
800
0.1
1
10
100
1000
10000
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
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
Rs
50 Ω
Rs = 0 Ω f or test
Rs serves to match the trace
impedances. Depending on
board layout, the value may
range from 0 to 30 ohms.
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 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-110410-01-2
DSC8101
Test Circuit
DSC8112
1
Programmable 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)
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
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-110410-01-2
S
S
S
6C
6C
6C/
M
cM
cM
ec
a.
a.
a x.
DSC8112
1
Package Dimensions
DSC8101
Programmable Low-Jitter Precision CMOS Oscillator
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 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.
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