DSC1104/24
Low Jitter Precision HCSL Oscillator
Features
• Low RMS Phase Jitter: <1 ps (typ.)
• High Stability: ±10 ppm, ±20 ppm, ±25 ppm,
±50 ppm
• Wide Temperature Range
- Industrial: –40°C to +85°C
- Ext. Commercial: –20°C to +70°C
- Ext. Industrial: –40°C to +105°C
• High Supply Noise Rejection: –50 dBc
• Wide Frequency Range: 2.3 MHz to 460 MHz
• Small Industry Standard Footprints:
- 2.5 mm x 2.0 mm, 3.2 mm x 2.5 mm,
5.0 mm x 3.2 mm, and 7.0 mm x 5.0 mm
• Excellent Shock and Vibration Immunity
- Qualified to MIL-STD-883
• High Reliability
- 20x Better MTF than Quartz Oscillators
• Low Current Consumption
• Supply Range of 2.25V to 3.6V
• Standby and Output Enable Function
• Lead Free and RoHS Compliant
General Description
The DSC1104 and DSC1124 series of high
performance oscillators utilizes a proven silicon MEMS
technology to provide excellent jitter and stability over
a wide range of supply voltages and temperatures. By
eliminating the need for quartz or SAW technology,
MEMS oscillators significantly enhance reliability and
accelerate product development, while meeting
stringent clock performance criteria for a variety of
communications, storage, and networking applications.
DSC1104 has a standby feature allowing it to
completely power down when EN pin is pulled low;
whereas for DSC1124, only the outputs are disabled
when EN is low. Both oscillators are available in
industry standard packages, including the small
2.5 mm x 2.0 mm, and are drop-in replacements for
standard 6-pin HCSL quartz crystal oscillators.
Block Diagram
Applications
• Storage Area Networks
- SATA, SAS, Fibre Channel
• Passive Optical Networks
- EPON, 10G-EPON, GPON, 10G-PON
• Ethernet
- 1G, 10GBASE-T/KR/LR/SR, and FCoE
• HD/SD/SDI Video and Surveillance
• PCI Express: Gen 1 to Gen 4
• Display Port
Pin 1
ENABLE
TEMP SENSOR &
COMPENSATION
CIRCUITRY
MEMS
OSCILLATOR
DIVIDER
DRIVER
Pin 6
V
DD
Pin 2
NC
Pin 5
OUTPUT
PLL
Pin 3
GND
Pin 4
OUTPUT
TABLE 1:
EN Pin
High
NC
Low
OUTPUT ENABLE MODES
DSC1104
Outputs Active
Outputs Active
Standby
DSC1124
Outputs Active
Outputs Active
Outputs Disabled
2017 Microchip Technology Inc.
DS20005870A-page 1
DSC1104/24
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage .......................................................................................................................................... –0.3V to +4.0V
Input Voltage .....................................................................................................................................–0.3V to V
DD
+ 0.3V
ESD Protection (HBM) ...............................................................................................................................................4 kV
ESD Protection (MM) ................................................................................................................................................400V
ESD Protection (CDM) ............................................................................................................................................1.5 kV
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
Specifications: V
DD
= 3.3V; T
A
= +25°C unless otherwise specified.
Parameters
Supply Voltage
(Note
1)
Sym.
V
DD
Min.
2.25
—
Supply Current
I
DD
—
—
Frequency Stability
Δf
—
—
—
Aging
Start-up Time (Note
2)
Input Logic Levels
Output Disable Time (Note
3)
Output Enable Time
Enable Pull-Up Resistor
(Note
4)
HCSL Outputs
Supply Current
Output Logic Levels
Peak-to-Peak Output Swing
Output Transition Time
(Note
3)
Frequency
Output Duty Cycle
I
DD
V
OH
V
OL
—
t
r
t
f
f
0
SYM
—
0.725
—
—
200
200
2.3
48
40
—
—
750
—
—
—
—
42
—
0.1
—
400
ps
—
460
52
MHz
%
mA
V
mV
Output Enabled, R
L
= 50Ω
Output logic high, R
L
= 50Ω
Output logic low
Single-Ended
Rise time, 20% to 80%,R
L
=
50Ω, C
L
= 2 pF
Fall time, 20% to 80%,R
L
=
50Ω, C
L
= 2 pF
Single frequency
Differential
Δf
Y1
t
SU
V
IH
V
IL
t
DA
t
EN
R
PU
—
—
0.75 x V
DD
—
—
—
—
—
20
—
—
—
—
—
—
—
—
—
—
—
40
22
±10
±20
±25
±50
±5
5
—
0.25 x V
DD
5
5
20
—
ppm
ms
V
ns
ms
ns
kΩ
ppm
Typ.
—
—
Max.
3.6
0.095
mA
Units
V
—
DSC1104, EN pin low,
Output is disabled
DSC1124, EN pin low,
Output is disabled
Includes frequency variation
due to initial tolerance,
temp., and power supply
voltage
One year at +25°C
T = +25°C
Input logic high
Input logic low
—
DSC1104
DSC1124
Pull-up resistor exists
Conditions
DS20005870A-page 2
2017 Microchip Technology Inc.
DSC1104/24
TEMPERATURE SPECIFICATIONS (Note
1)
Parameters
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Soldering Temperature
Note 1:
Sym.
T
A
T
J
T
S
—
Min.
–20
–40
–40
—
–55
—
Typ.
—
—
—
—
—
—
Max.
+70
+85
+105
+150
+150
+260
Units
°C
°C
°C
°C
°C
°C
Conditions
Ordering Option E
Ordering Option I
Ordering Option L
—
—
40 sec. max.
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
junction temperature, and the thermal resistance from junction to air (i.e., T
A
, T
J
,
JA
). Exceeding the
maximum allowable power dissipation will cause the device operating junction temperature to exceed the
maximum +150°C rating. Sustained junction temperatures above +150°C can impact the device reliability.
DS20005870A-page 4
2017 Microchip Technology Inc.
TI Technology Forum
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