Low-Jitter Precision CMOS Oscillator
DSC1101 DSC1121
Absolute Maximum Ratings
Ordering Code
Item
Min
-0.3
-0.3
-
Max
+4.0
Unit Condition
Temp Range
E: -20 to 70
I: -40 to 85
L: -40 to 105
M: -55 to 125
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
V
V
Enable Modes
0: Enable/Standby
2: Enable/Disable
Packing
T: Tape & Reel
: Tube
VDD+0.3
+150
°C
°C
-55
-
+150
DSC11 0 1 C I 5
125.0000
T
+260
°C
V
40sec max.
ESD
HBM
MM
-
Package
A: 7.0x5.0mm
B: 5.0x3.2mm
C: 3.2x2.5mm
Stability
1: ±50ppm
2: ±25ppm
5: ±10ppm
Freq (MHz)
125.0000
4000
400
1500
CDM
D: 2.5x2.0mm
N: 7.0x5.0mm (no center pad)
Note: 1000+ years of data retention on internal memory
Specifications
Parameter
Condition
Min.
Typ.
Max.
Unit
Supply Voltage1
VDD
IDD
2.25
3.6
V
EN pin low – output is disabled
DSC1101
Supply Current
0.095
22
mA
DSC1121
20
Frequency Stability
Ext Comm. & Ind. only
All temp ranges
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
±10
±25
±50
Δf
ppm
All temp ranges
Aging
Startup Time2
Δf
tSU
1 year @25°C
T=25°C
±5
5
ppm
ms
Input Logic Levels
Input logic high
Input logic low
VIH
VIL
0.75xVDD
-
-
V
0.25xVDD
Output Disable Time3
Output Enable Time
Enable Pull-Up Resistor4
tDA
5
ns
DSC1101
DSC1121
5
20
ms
ns
tEN
Pull-up resistor exist
40
31
kΩ
CMOS Output
output is enabled
CL=15pF, F0=125 MHz
Supply Current4
IDD
35
mA
V
Output Logic Levels
Output logic high
Output logic low
Output Transition time3
Rise Time
VOH
VOL
I=±6mA
0.9xVDD
-
-
0.1xVDD
20% to 80%
CL=15pF
tR
tF
1.1
1.3
2
2
ns
Fall Time
All temp range except Auto
Auto temp range
2.3
45
170
100
Frequency
f0
MHz
%
Output Duty Cycle
Period Jitter
SYM
JPER
55
Fout=125MHz
3
psRMS
200kHz to 20MHz @ 125MHz
100kHz to 20MHz @ 125MHz
12kHz to 20MHz @ 125MHz
0.3
0.38
1.7
Integrated Phase Noise
JPH
psRMS
2
1.
2.
3.
4.
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.
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DSC1101 | DSC1121 Page 2 MK-Q-B-P-D-110410-01-6
MICREL [ MICREL SEMICONDUCTOR ]
