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-110410-04-2
DSC8104
DSC8124
Programmable Low-Jitter Precision HCSL 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
DSC81
0
4
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
V
DD
I
DD
EN pin low – outputs are disabled
DSC8104
DSC8124
Includes frequency variations due
to initial tolerance, temp. and
power supply voltage
1 year @25°C
T=25°C
0.75xV
DD
-
DSC8104
DSC8124
Pull-up resistor exist
40
40
0.725
-
750
200
10
48
2.5
200kHz to 20MHz @156.25MHz
100kHz to 20MHz @156.25MHz
12kHz to 20MHz @156.25MHz
0.25
0.37
1.7
400
460
52
42
-
0.1
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.
Δf
Δf
t
SU
V
IH
V
IL
t
DA
t
EN
ppm
ppm
ms
V
ns
ms
ns
kΩ
mA
V
mV
ps
MHz
%
ps
RMS
ps
RMS
HCSL 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
= 2pF
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 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-110410-04-2
DSC8104
DSC8124
Programmable Low-Jitter Precision HCSL 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)
50MHz-HCSL
2.0
Rejection (dBc)
-20
-30
-40
-50
-60
-70
-80
0.1
1
10
100
100-mV
106MHz-HCSL
156MHz-HCSL
1.5
212MHz-HCSL
1.0
0.5
0.0
1000
10000
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%
675 mV
830 mv
1/
f
o
t
EN
t
DA
V
IH
Enable
V
IL
Typical Termination Scheme
V
DD
0.1uF
Rs = 0 Ω f or test
6
2
3
5
4
Rs
100 Ω
Rs
Rs serves to match the trace
impedances. Depending on
board layout, the value may
range from 0 to 30 ohms.
50 Ω
50 Ω
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-110410-04-2
DSC8104
Test Circuit
DSC8124
Programmable Low-Jitter Precision HCSL Oscillator
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 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-110410-04-2
S
S
S
6C
6C
6C/
c
c
ec
Ma
Ma
Ma
.
.
x.
DSC8104
DSC8124
Programmable Low-Jitter Precision HCSL Oscillator
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
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.
main(){
// Step 1. Initialize System Control:// PLL, WatchDog, enable Peripheral Clocks// This example function is found in the DSP2803x_SysCtrl.c file. InitSysCtrl();
// Step 2. ......
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