___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 1 mk -q-b-p-d- 1104 10 - 02 -6 low-jitter precision lvpecl oscillator dsc1102 dsc11 22 general description the dsc 11 02 & dsc1122 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 cloc k performance criteria for a variety of communications, storage, and networking applications. dsc1102 has a standby feature allowing it to completely power-down when en pin is pulled low; whereas for dsc1122, 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 r eplacements for standard 6-pin lvpecl quartz crystal oscillators. block diagram output enable modes en pin dsc1102 dsc1122 high outputs active outputs active nc outputs active outputs active low standby outputs disabled features low rms phase jitter: <1 ps (typ) high stability: 10 , 25, 50 ppm wide temperature range o industrial: -40 to 85 c o ext. commercial: -20 to 70 c high supply noise rejection: -50 dbc short lead time: 2 weeks wide freq. range: 2.3 to 4 60 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 o 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 lvds & hcsl versions available applications storage area networks o sata, sas, fibre channel passive optical networks o epon, 10g-epon, gpon, 10g- pon ethernet o 1g, 10gbase-t/kr/lr/sr, and fcoe hd/sd/sdi video & surveillance pc i express: gen 1 & gen 2 displayport downloaded from: http:///
___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 2 mk -q-b-p-d- 1104 10 - 02 -6 dsc1102 low -jitter precision lvpecl oscillator dsc1122 absolute maximum ratings item min max unit condition supply voltage -0.3 +4.0 v input voltage -0.3 v dd +0.3 v junction temp - +150 c storage temp - 55 +150 c soldering temp - +260 c 40 sec max. esd hbm mm cdm - 4000 400 1500 v ordering code note: 1000+ years of data retention on internal mem ory specifications notes: 1. pin 6 v dd should be filtered with 0.1uf capacitor. 2. t su is time to 100ppm of output frequency after v dd 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. parameter condition min. typ. max. unit supply voltage 1 v dd 2.25 3.6 v supply current i dd en pin low C outputs are disabled dsc1102 dsc1122 20 0.095 22 ma frequency stability f includes frequency variations due to initial tolerance, temp. and power supply voltage 10 25 50 ppm aging f 1 year @ 25c 5 ppm startup time 2 t su t= 25c 5 ms input logic levels input logic high input logic low v ih v il 0.75xv dd - - 0.25xv dd v output disable time 3 t da 5 ns output enable time t en dsc1102 dsc1122 5 20 ms ns enable pull-up resistor 4 pull-up resistor exist 40 k lvpecl outputs supply current i dd output enabled, r l =50 56.5 58 ma output logic levels output logic high output logic low v oh v ol r l =50 v dd -1.08 - - v dd -1.55 v pk to pk output swing single-ended 80 0 mv output transition time 3 rise time fall time t r t f 20% to 80% r l = 50 , c l = 0pf 250 ps frequency f 0 single frequency 2.3 4 60 mhz output duty cycle sym differential 48 52 % period jitter j per 2.5 ps rms integrated phase noise j ph 200khz to 20mhz @156.25mhz 100khz to 20mhz @156.25mhz 12khz to 20mhz @156.25mhz 0.25 0.38 1. 7 2 ps rms dsc11 125.0000 freq (mhz) 125.0000 0 enable modes 0: enable/standby 2: enable/disable - packing t: tape & reel : tube 2 c i 5 package a: 7.0x5.0mm b: 5.0x3.2mm c: 3.2x2.5mm d: 2.5x2.0 mm n: 7.0x5.0mm (no center pad) temp range e: -20 to 70 i: -40 to 85 l: -40 to 105 stability 1: 50ppm 2: 25ppm 5: 10ppm t downloaded from: http:///
___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 3 mk -q-b-p-d- 1104 10 - 02 -6 dsc1102 low -jitter precision lvpecl oscillator dsc1122 nominal performance parameters (unless specified otherwise: t=25 c, v dd =3.3 v) power supply rejection ratio phase jitter (integrated phase noise) output waveform typical termination scheme - 80 - 70 - 60 - 50 - 40 - 30 - 20 - 10 0 0.1 1 10 100 1000 10000 rejection (dbc) supply noise frequency (khz) 50 - mv 100 - mv 0.0 0.5 1.0 1.5 2.0 2.5 0 200 400 600 800 1000 phase jitter (ps rms) low -end of integration bw: x khz to 20 mhz 156mhz-lvpecl 212mhz-lvpecl 320mhz-lvpecl 410mhz-lvpecl v il 1/ f o output enable t da t en t f t r v ih 80 % 20% 50% output 830 mv v dd 0.1uf 82 ? 130 ? 100 ? 82 ? 130 ? v dd 2 3 4 5 6 downloaded from: http:///
___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 4 mk -q-b-p-d- 1104 10 - 02 -6 dsc1102 low -jitter precision lvpecl oscillator dsc1122 test circuit solder reflow profile 0.1uf v dd 0.01uf i dd v da 6 4 5 1 3 2 lvpecl lvpecl v tt 50 50 v tt = v dd - 2.0v 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 peak temperature 255-260 c time within 5 c of actual peak 20 -40 sec ramp-down rate 6 c/sec max. time 25 c to peak temperature 8 min max. 60 -150 sec 20 - 40 sec 60 -180 sec 8 min max pre heat reflow cool time temperature ( c) 3c/sec max. 6c/sec max. 200 c 217 c 150 c 25 c 260 c 3c/sec max. 60 -150 sec 20 - 40 sec 60 -180 sec 8 min max pre heat reflow cool time temperature ( c) 3c/sec max. 6c/sec max. 200 c 217 c 150 c 25 c 260 c 60 -150 sec 20 - 40 sec 60 -180 sec 8 min max pre heat reflow cool time temperature ( c) 3c/sec max. 6c/sec max. 200 c 217 c 150 c 25 c 260 c 3c/sec max. downloaded from: http:///
___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 5 mk -q-b-p-d- 1104 10 - 02 -6 dsc1102 low -jitter precision lvpecl oscillator dsc1122 package dimensions 7.0 x 5.0 mm plastic package 1 2 3 4 6 5 70.10 [0.2760.004] 50.10 [0.1970.004] 1 2 3 4 6 5 1.10.01[0.430.004] 3.7 [0.146] ref 0.850.05 1.4 [0.055] 2.6 [0.102] 1 2 3 4 5 2.54[0.100] via to power trace via to ground plane no. pin terminal 1 enable 2 n/c 3 ground 4 5 out- 6 vdd out 6 external dimensions units: mm [ inches] recommended solder pad layout units: mm [ inches] 2.54 [0.100] 1.40.10 [0.0550.004] 1.8 [0.071] 2.8 [0.110] 1.4 [0.055] pad tie to gnd 5.0 x 3.2 mm plastic package 1 2 3 4 6 5 50.05 [0.1970.002] 3.20.05 [0.1260.002] 1 2 3 4 6 5 1.27 [0.050] 0.70.1 [0.0790.002] 1.2 [0.047] ref 0.850.05 0.64 [0.025] 1.1 [ 0.043] 1.2 [0.047] ref 1 2 3 4 5 1.27[0.05] via to power trace via to ground plane no. pin terminal 1 enable 2 n/c 3 ground 4 5 out- 6 vdd out 6 external dimensions units: mm [ inches] recommended solder pad layout units: mm [ inches] 0.640.05 downloaded from: http:///
___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 6 mk -q-b-p-d- 1104 10 - 02 -6 dsc1102 low -jitter precision lvpecl oscillator dsc1122 3.2 x 2.5 mm plastic package 1 2 3 4 6 5 3.20.05 [0.1260.002] 2.50.05 [0.0980.002] 1 2 3 4 6 5 0.50.05 [0.1980.002] 0.90.05 [0.0350.002] 1.05 [0.041] 0.70.1 [0.0790.002] 0.1[0.004] ref 0.9 [0.035] ref 0.850.05 0.5 [0.197] 0.9 [0.035] 1 [ 0.039] 0.9 [0.035] ref 1 2 3 4 5 0.375 via to power trace via to ground plane no. pin terminal 1 enable 2 n/c 3 ground 4 5 out- 6 vdd out 6 external dimensions units: mm [ inches] recommended solder pad layout units: mm [ inches] 2.5 x 2.0 mm plastic package 1 2 3 4 6 5 2.50.05 [0.0980.002] 2.00.05 [0.0790.002] 1 2 3 4 6 5 0.250.05 [0.0990.002] 0.650.05 [0.0260.002] 0.825 [0.032] 0.70.1 [0.0790.002] 0.7650.1 0.535 ref 0.6 ref 0.70.1 [0.0790.002] 0.850.05 0.250.05 [0.0990.002] 0.650.05 [0.0260.002] 0.85 0.7 ref 1 2 3 4 5 6 0.375 via to power trace via to ground plane no. pin terminal 1 enable 2 n/c 3 ground 4 5 out- 6 vdd out external dimensions units: mm [ inches] recommended solder pad layout units: mm [ inches] downloaded from: http:///
___________________________________________________ ___________________________________________________ _______________________ _________________ dsc1102 | dsc1122 page 7 mk -q-b-p-d- 1104 10 - 02 -6 dsc1102 low -jitter precision lvpecl oscillator dsc1122 7.0 x 5.0 mm plastic package 1 2 3 4 6 5 70.10 [0.2760.004] 50.10 [0.1970.004] 1 2 3 4 6 5 1.10.01[0.430.004] 3.7 [0.146] ref 0.850.05 1.4 [0.055] 2.6 [0.102] 1 2 3 4 5 2.54[0.100] via to power trace via to ground plane no. pin terminal 1 enable 2 n/c 3 ground 4 5 out- 6 vdd out 6 external dimensions units: mm [ inches] recommended solder pad layout units: mm [ inches] 2.54 [0.100] 1.40.10 [0.0550.004] 1.4 [0.055] 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 merchantabi lity 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 disceras 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. discera, inc. 1961 concourse drive , san jose, california 95131 usa phone: +1 (408) 432-8600 fax: +1 (408) 432-8609 email: sales@discera.com www.discera.com downloaded from: http:///
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