DSC1103CI5-300.0000

## **General Description** 

The DSC1103 & DSC1123 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. 

DSC1103 has a standby feature allowing it to completely power-down when EN pin is pulled low; whereas for DSC1123, only the outputs are disabled when EN is low.  Both oscillators are available in industry standard packages, including the small 3.2x2.5 mm[2] , and are “drop-in” replacements for standard 6-pin LVDS quartz crystal oscillators. 

## **Block Diagram** 

## **Features** 

- **Low RMS Phase Jitter: <1 ps (typ)** 

- **High Stability: ±10, ±25, ±50 ppm** 

- **Wide Temperature Range** 

- Industrial: -40° to 85° C 

- Ext. commercial: -20° to 70° C 

- **High Supply Noise Rejection: -50 dBc** 

- **Short Lead Time: 2 Weeks** 

- **Wide Freq. Range: 2.3 to 460 MHz** 

- **Small Industry Standard Footprints** `o` 2.5x2.0, 3.2x2.5, 5.0x3.2, & 7.0x5.0 mm 

- **Excellent Shock & Vibration Immunity** `o` Qualified to MIL-STD-883 

- **High Reliability** 

- 20x better MTF than quartz oscillators 

- **Low Current Consumption** 

- **Supply Range of 2.25 to 3.6 V** 

- **Standby & Output Enable Function Lead Free & RoHS Compliant** 

- **LVPECL & HCSL Versions Available** 

## **Applications** 

- **Storage Area Networks** 

- SATA, SAS, Fibre Channel 

- **Passive Optical Networks** 

- EPON, 10G-EPON, GPON, 10G-PON 

- **Ethernet** 

## **Output Enable Modes** 

|EN Pin<br>~~e~~|DSC1103<br>~~ee~~|DSC1123<br>~~eee~~|
|---|---|---|
|High<br>NC<br>Low<br>~~e~~|Outputs Active<br>Outputs Active<br>Standby<br>~~ee ~~|Outputs Active<br>Outputs Active<br>Outputs Disabled<br> ~~eee~~|



- 1G, 10GBASE-T/KR/LR/SR, and FCoE 

- **HD/SD/SDI Video & Surveillance PCI Express: Gen 1 & Gen 2 DisplayPort** 

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DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator SA, © ciscera 

## **Absolute Maximum Ratings** 

|**Item**|**Min**|**Max**|**Unit**|**Condition**|
|---|---|---|---|---|
|Supply Voltage|-0.3|+4.0|V||
|Input Voltage|-0.3|VDD+0.3|V||
|Junction Temp|-|+150|°C||
|Storage Temp|-55|+150|°C||
|Soldering Temp|-|+260|°C|40sec max.|
|ESD<br>HBM<br>MM<br> CDM|-|4000<br>400<br>1500|V||



## **Ordering Code** 

Temp Range Enable Modes E: -20 to 70 Packing 0: Enable/Standby I: -40 to 85 T: Tape & Reel 2: Enable/Disable L: -40 to 105 : Tube ~~Gos~~ **DSC11** 0 **3** C I 5 - 125.0000 T ~~—~~ Package — ~~——~~ Stability — Freq (MHz) A: 7.0x5.0mm 1: ±50ppm 125.0000 B: 5.0x3.2mm 2: ±25ppm C: 3.2x2.5mm 5: ±10ppm D: 2.5x2.0mm 

N: 7.0x5.0mm (no center pad) 

Note: 1000+ years of data retention on internal memory 

## **Specifications** 

|**Parameter**<br>~~aS~~<br>~~a~~|~~2)~~|**Condition**<br>~~2)~~|**Min.**<br>~~2)~~<br>~~0) OT)~~|**Typ. **<br>~~2)~~<br>~~OT)~~|**Max.**<br>~~2)~~|**Unit**<br>~~2)~~|
|---|---|---|---|---|---|---|
|SupplyVoltage1<br>~~aS~~<br>~~a~~<br>~~e~~|VDD<br>~~2)~~<br>~~ae~~<br>~~ee~~|~~2)~~<br>~~Rs~~<br>~~e~~|2.25<br>~~2)~~<br>~~0) OT)~~<br>~~Rs~~<br>~~eee~~|~~2)~~<br>~~OT)~~<br>~~Rs~~<br>~~eee~~|3.6<br>~~2)~~<br>~~Rs~~<br>~~eee~~|V<br>~~2)~~<br>~~Rs~~<br>~~eee~~|
|Supply Current<br>~~e~~|IDD<br>~~ae~~<br>~~ee~~|EN pin low – outputs are disabled<br>DSC1103<br>DSC1123<br>~~Rs~~<br>~~e~~|~~Rs~~<br>~~eee~~|20<br>~~Rs~~<br>~~eee~~|0.095<br>22<br>~~Rs~~<br>~~eee~~|mA<br>~~Rs~~<br>~~eee~~|
|Frequency Stability<br>~~e~~|Δf<br>~~ee~~|Includes frequency variations due<br>to initial tolerance, temp. and<br>power supply voltage<br>~~e ~~|~~eee~~|~~eee~~|±10<br>±25<br>±50<br>~~eee~~|ppm<br>~~eee~~|
|Aging|Δf|1year@25°C|||±5|ppm|
|Startup Time2<br>~~a~~|tSU|T=25°C<br>~~ee eee~~|~~eee~~|~~eee~~|5<br>~~eee~~|ms<br>~~eee~~|
|Input Logic Levels<br>Input logic high<br>Input logic low<br>~~a~~<br>~~a~~|VIH<br>VIL<br>~~ae~~|~~ee eee~~<br>~~a~~|0.75xVDD<br>-<br>~~eee~~<br>~~ss~~|~~eee~~<br>~~ss~~|-<br>0.25xVDD<br>~~eee~~|V<br>~~eee~~|
|Output Disable Time3<br>~~a~~<br>~~a~~|tDA<br>~~ae~~|~~ee eee~~<br>~~a~~|~~eee~~<br>~~ss~~|~~eee~~<br>~~ss~~|5<br>~~eee~~|ns<br>~~eee~~|
|Output Enable Time<br>~~a~~<br>~~ee~~<br>~~ae~~|tEN<br>~~ae~~<br>~~ee~~<br>~~a~~|DSC1103<br>DSC1123<br>~~a~~<br>~~ee~~<br>~~ae~~|~~ss~~<br>~~ee~~<br>~~ae~~<br>~~ee~~|~~ss~~<br>~~ee~~<br>~~ae~~<br>~~ee~~|5<br>20<br>~~ee~~<br>~~ae~~<br>~~ee~~|ms<br>ns<br>~~ee~~<br>~~ae~~<br>~~ee~~|
|Enable Pull-UpResistor4<br>~~ae~~|~~a~~|Pull-upresistor exist<br>~~ae~~|~~ae~~<br>~~ee~~|40<br>~~ae~~<br>~~ee~~|~~ae~~<br>~~ee~~|kΩ<br>~~ae~~<br>~~ee~~|
|**LVDS Outputs**<br>~~ae aae~~<br>~~ee~~<br>~~ee~~<br>~~ee ee~~<br>~~a~~<br>~~aea~~|||||||
|SupplyCurrent<br>~~a~~<br>~~a~~|IDD<br>~~ae~~<br>~~ae~~|Output Enabled, RL=100Ω<br>~~a~~<br>~~a~~||29|32|mA|
|Output offset Voltage<br>~~a~~<br>~~a~~<br>~~as~~|VOS<br>~~ae~~<br>~~ae~~<br>~~ie~~|R=100Ω Differential<br>~~a~~<br>~~a~~|1.125||1.4|V|
|Delta Offset Voltage<br>~~a~~<br>~~as~~<br>~~a~~|∆VOS<br>~~ae~~<br>~~ie~~<br>~~Oe~~|~~a~~|||50|mV|
|Pk to Pk Output Swing<br>~~as ~~<br>~~a~~<br>~~ee~~|VPP<br> ~~ie~~<br>~~Oe~~<br>~~ee~~|Single-Ended<br>~~ee ee~~|~~ee~~|350<br>~~ee~~|~~ee~~|mV<br>~~ee~~|
|Output Transition time3<br>Rise Time<br>Fall Time<br>~~a~~<br>~~ee~~|tR<br>tF<br>~~Oe~~<br>~~ee~~|20% to 80%<br>RL=50Ω, CL= 2pF<br>~~ee ee~~|~~ee~~|200<br>~~ee~~|~~ee~~|ps<br>~~ee~~|
|Frequency<br>~~ee~~<br>~~a~~|f0<br>~~ee~~|Single Frequency<br>~~ee ee~~|2.3<br>~~ee~~|~~ee~~|460<br>~~ee~~|MHz<br>~~ee~~|
|Output DutyCycle<br>~~a~~<br>~~ee~~|SYM<br>~~ie~~|Differential|48||52|%|
|Period Jitter<br>~~ee~~<br>~~a~~|JPER<br>~~ie~~|~~eee~~|~~eee~~|2.5<br>~~eee~~|~~eee~~|psRMS<br>~~eee~~|
|Integrated Phase Noise<br>~~ee ~~<br>~~a~~|JPH<br> ~~ie~~|200kHz to 20MHz @156.25MHz<br>100kHz to 20MHz @156.25MHz<br>12kHz to 20MHz @156.25MHz<br>~~eee~~|~~eee~~|0.28<br>0.4<br>1.7<br>~~eee~~|2<br>~~eee~~|psRMS<br>~~eee~~|



2. tsu is time to 100ppm of output frequency after VDD is applied and outputs are enabled. 

3. Output Waveform and Test Circuit figures below define the parameters. 

4. Output is enabled if pad is floated or not connected. 

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DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator PTie = discera 

**Nominal Performance Parameters** (Unless specified otherwise: T=25° C, VDD=3.3 V) 

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0<br>50-mV<br>-10<br>100-mV<br>-20<br>-30<br>-40<br>-50<br>-60<br>-70 SSS<br>-80<br>0.1 1 10 100 1000 10000<br>Supply Noise Frequency (kHz)<br>Power supply rejection ratio<br>Rejection (dBc)<br>**----- End of picture text -----**<br>


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2.5<br>156MHz-LVDS<br>2.0 212MHz-LVDS<br>= a n<br>320MHz-LVDS<br>1.5 Se eeS 410MHz-LVDS<br>1.0<br>0.5 pe \e fase Say<br>0.0<br>0 200 400 600 800 1000<br>Low-end of integration BW: x kHz to 20 MHz<br>Phase Jitter (ps RMS)<br>**----- End of picture text -----**<br>


Phase jitter (integrated phase noise) 

## **Output Waveform** 

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tR tF<br>Output 80%<br>50% 830 mv350 mV<br>20%<br>Output<br>1/f o tEN<br>tDA<br>VIH<br>Enable<br>VIL<br>VDD<br>an 0.1uF<br>6<br>I 2 5 [<br>100 Ω 100 Ω<br>3 4<br>|<br>( FO 3<br>**----- End of picture text -----**<br>


## **Typical Termination Scheme** 

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DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator A, 

## **Test Circuit** 

## **Solder Reflow Profile** 

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260°C  at 20-40Sec e<br>217°C<br>60-150<br>200°C  Sec<br>150°C  60-180 Reflow<br>Sec<br>Pre heat Cool<br>25°C<br>8 min max Time<br>3C/Sec Max.<br>3C/Sec Max.<br>6C/Sec Max.<br>°C)<br>Temperature  (<br>**----- End of picture text -----**<br>


|**MSL 1@ 260°C refer to JSTD-020C**|**MSL 1@ 260°C refer to JSTD-020C**|
|---|---|
|Ramp-UpRate (200°C toPeak Temp)|3°C/SecMax.|
|Preheat  Time 150°C to 200°C|60-180  Sec|
|Timemaintained above217°C|60-150 Sec|
|Peak Temperature|255-260°C|
|Timewithin5°C ofactual Peak|20-40 Sec|
|Ramp-Down Rate|6°C/SecMax.|
|Time 25°C to Peak Temperature|8 min Max.|



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DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator CEne, = discera 

## **Package Dimensions** 

## **7.0 x 5.0 mm Plastic Package** 

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EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT<br>Units: mm [ inches] Units: mm [ inches]<br>Via to Ground<br>Via to Power<br>1.4±0.10 [0.055±0.004] Plane Trace<br>7±0.10 [0.276±0.004] 2.54 [0.100] 2.54[0.100]<br>m— 6 5 st 4 4 t 5 tt 6<br>6 5 4<br>lhe | oie<br>1 2 3<br>_<br>1 2 3 3 2 1<br>2.8 [0.110]<br>5±0.10 [0.197±0.004]<br>in m e | —<br>No. Pin Terminal<br>1.4 [0.055]<br>1 Enable<br>2 N/C<br>0.85±0.05  3 Ground<br>4 OUT<br>5 OUT-<br>6 VDD<br>PAD TIE TO GND<br>a<br>5.0 x 3.2 mm Plastic Package<br>EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT<br>Units: mm [ inches] Units: mm [ inches]<br>1.27 [0.050] 0.64±0.05 Via to Power<br>5±0.05 [0.197±0.002] Trace<br>1.27[0.05]<br>6 5 4 4 5 6 Via to Ground<br>TO 4 ora e Plane Wy<br>ai<br>6 5 4<br>1.2 [0.047] REF<br>1 2 3<br>1 2 3 3 2 1<br>0.7±0.1 [0.079±0.002]<br>3.2±0.05 [0.126±0.002] SLL<br>1.1 [ 0.043]<br>No. Pin Terminal<br>0.64 [0.025]<br>1 Enable<br>2 N/C<br>3 Ground<br>0.85±0.05  4 OUT<br>5 OUT-<br>6 VDD<br>—= af<br>______________________________________________________________________________________________________________________________________________ DSC1103 | DSC1123  Page 5               MK-Q-B-P-D-110410-03-6<br>3.7 [0.146] REF 1.8 [0.071] 1.1±0.01[0.43±0.004] 2.6 [0.102]<br>1.4 [0.055]<br>1.2 [0.047] REF<br>**----- End of picture text -----**<br>


DSC1103 DSC1123 Low-Jitter Precision LVDS Oscillator i ie, 

## **3.2 x 2.5 mm Plastic Package** 

**EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT Units: mm [ inches] Units: mm [ inches]** 

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Via to Power<br>Trace<br>3.2±0.05 [0.126±0.002]<br>1.05 [0.041] Via to Ground  0.375<br>0.7±0.1 [0.079±0.002] Plane<br>6 5 4 4 5 6<br>0.9 [0.035] REF<br>0.9 [0.035] REF<br>6 5 4<br>1 2 3<br>1 [ 0.039]<br>1 2 3 3 2 1<br>2.5±0.05 [0.098±0.002] | 0.9±0.05 [0.035±0.002] al 0.1[0.004] REF 0.9 [0.035] 4 0.5 [0.197]<br>7 OL t . ae<br>0.5±0.05 [0.198±0.002]<br>No. Pin Terminal<br>1 Enable<br>0.85±0.05  2 N/C<br>3 Ground<br>4 OUT<br>5 OUT-<br>6 VDD<br>**----- End of picture text -----**<br>


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2.5 x 2.0 mm Plastic Package<br>EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT<br>Units: mm [ inches] Units: mm [ inches]<br>2.5±0.05 [0.098±0.002]<br>0.7±0.1 [0.079±0.002]<br>0.825 [0.032]<br>Via to<br>Power Trace<br>6 5 4 4 5 6<br>Via to Ground  0.375<br>0.6 REF<br>a5, a Plane<br>0.535 REF<br>0.7 REF<br>6 5 4<br>1 2 3 0.7±0.1 [0.079±0.002] 3 2 1 0.765±0.1 1 2 3<br>te he<br>2.0±0.05 [0.079±0.002]<br>0.65±0.05 [0.026±0.002] 0.25±0.05 [0.099±0.002]<br>0.85<br>via tty<br>0.65±0.05 [0.026±0.002]<br>No. Pin Terminal<br>1 Enable<br>0.25±0.05 [0.099±0.002]<br>0.85±0.05  2 N/C<br>3 Ground<br>4 OUT<br>5 OUT-<br>6 VDD<br>a"<br>______________________________________________________________________________________________________________________________________________ DSC1103 | DSC1123  Page 6               MK-Q-B-P-D-110410-03-6<br>**----- End of picture text -----**<br>


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DSC1103   DSC1123   Low-Jitter Precision LVDS Oscillator<br>CRA<br>7.0 x 5.0 mm Plastic Package<br>EXTERNAL DIMENSIONS RECOMMENDED SOLDER PAD LAYOUT<br>Units: mm [ inches] Units: mm [ inches]<br>Via to Ground<br>Via to Power<br>1.4±0.10 [0.055±0.004] Plane Trace<br>7±0.10 [0.276±0.004] 2.54 [0.100] 2.54[0.100]<br>tt 6 5 4 4 5 6<br>6 5 4<br>1 2 3<br>1 2 3 3 2 1<br>5±0.10 [0.197±0.004]<br>oer<br>No. Pin Terminal<br>1.4 [0.055]<br>1 Enable<br>2 N/C<br>0.85±0.05  3 Ground<br>4 OUT<br>5 OUT-<br>6 VDD<br>a<br>2.6 [0.102]<br>3.7 [0.146] REF 1.1±0.01[0.43±0.004]<br>1.4 [0.055]<br>**----- End of picture text -----**<br>


## **Disclaimer:** 

Discera makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.  Discera reserves the right to make changes without further notice to materials described herein.  Discera does not assume any liability arising from the application or use of any product or circuit described herein.  Discera does not authorize its products for use a critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user.  The inclusion of Discera’s product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Discera against all charges. 

**● 1961 Concourse Drive, San Jose, California 95131 ● USA ● Fax:  +1 (408) 432-8609   ●   Email:  sales@discera.com ● www.discera.com** 

**DISCERA, Inc. ● Phone:   +1 (408) 432-8600** 

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