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preliminary rev. 0.3 3/07 copyright ? 2007 by silicon laboratories si5368 this information applies to a product under dev elopment. its characteristics and specifications are s ubject to change without n otice. si5368 a ny -r ate p recision c lock m ultiplier /j itter a ttenuator description the si5368 is a jitter-attenuating precision clock multiplier for applications requiring sub 1 ps rms jitter performance. the si5368 accepts four clock inputs ranging from 2 khz to 710 mhz and generates five i ndependent, synchronous clock outputs ranging from 2 khz to 945 mhz and select frequencies to 1.4 ghz. the device provides virtually any frequency translation combination across this operating range. the outputs are divided down separately from a common source. the si5368 input clock frequency and clock multiplication ratio are programmable through an i 2 c or spi interface. the si5368 is based on silicon laboratories' 3rd- generation dspll ? technology, which provides any-rate frequency synthesis and jitter attenuation in a highly integrated pll solution that eliminates the need for external vcxo and loop filter components. the dspll loop bandwidth is digitally programmable, providing jitter performance optimization at the application level. operating from a single 1.8 or 2.5 v supply, the si5368 is ideal for providing clock multiplication a nd jitter attenuation in high performance timing applications. applications sonet/sdh oc-48/oc-192 line cards gbe/10gbe, 1/2/4/ 8/10gfc line cards itu g.709 and custom fec line cards wireless basestations data converter clocking xdsl sonet/sdh + pdh clock synthesis test and measurement features generates any frequency from 2 khz to 945 mhz and select frequencies to 1.4 ghz from an input frequency of 2 khz to 710 mhz ultra-low jitter clock outputs w/jitter generation as low as 0.3 ps rms (50 khz?80 mhz) integrated loop filter with selectable loop bandwidth (60hz to 8.4khz) meets oc-192 gr-253-cor e jitter specifications four clock inputs w/manual or automatically controlled hitless switching five clock outputs with selectable signal format (lvpecl, lvds, cml, cmos) sonet frame sync switching and regeneration support for itu g.709 and custom fec ratios (255/238, 255/237, 255/236) lol, los, fos alarm outputs digitally-controlled ou tput phase adjust i 2 c or spi programmable settings on-chip voltage regulator for 1.8 or 2.5 v 10% operation small size: 14 x 14 mm 100-pin tqfp pb-free, rohs compliant p reliminary d ata s heet rate select i 2 c/spi port clock select xtal or refclock ckout2 ckin1 ckout1 ckin2 control nc1 nc2 latency control ckin3 ckin4 ckout4 nc4 ckout5/fs_out input clock 3 input clock 4 output clock 2 nfs vdd (1.8 or 2.5 v) gnd n32 n31 dspll ? n2 ckout3 nc3 n33 n34 device interrupt lol/los/fos alarms fsync realignment
si5368 2 preliminary rev. 0.3 table 1. performance specifications (v dd = 1.8 or 2.5 v 10%, t a =?40 to 85oc) parameter symbol test condition min typ max unit temperature range t a ?40 25 85 oc supply voltage v dd 2.25 2.5 2.75 v 1.62 1.8 1.98 v supply current i dd f out = 622.08 mhz all ckouts enabled lvpecl format output ? 394 435 ma only ckout1 enabled ? 253 284 ma f out = 19.44 mhz all ckouts enabled cmos format output ? 278 321 ma only ckout1 enabled ? 229 261 ma tristate/sleep mode ? tbd tbd ma input clock frequency (ckin1, ckin2, ckin3, ckin4) ck f input frequency and clock mul- tiplication ratio determined by programming device pll divid- ers. consult silicon laborato- ries configuration software dspll sim or any-rate preci- sion clock family reference manual at www.silabs.com/tim- ing to determine pll divider settings for a given input fre- quency/clock multiplication ratio combination. 0.002 ? 710 mhz input clock frequency (ckin3, ckin4 used as fsync inputs) ck f 0.002 ? 0.512 mhz output clock frequency (ckout1, ckout2, ckout3, ckout4, ckout5 used as fifth high-speed out- put) ck of 0.002 970 1213 ? ? ? 945 1134 1417 mhz ckout5 used as frame sync output (fs_out) ck of 0.002 ? 710 mhz input clocks (ckin1, ckin2, ckin3, ckin4) differential voltage swing ckn dpp 0.25 ? 1.9 v pp common mode voltage ckn vcm 1.8 v 10% 0.9 ? 1.4 v 2.5 v 10% 1.0 ? 1.7 v rise/fall time ckn trf 20?80% ? ? 11 ns duty cycle ckn dc whichever is less 40 ? 60 % 50 ? ? ns note: for a more comprehensive listing of device specifications , please consult the silicon laboratories any-rate precision clock family reference manual. this document can be downloaded from www.silabs.com/timing .
si5368 preliminary rev. 0.3 3 output clocks (ckout1, ckout2 , ckout3, ckout4, ckout5/fs_out) common mode v ocm lvpecl 100 ? load line-to-line v dd ?1.42 ? v dd ?1.25 v differential output swing v od 1.1 ? 1.9 v dd single ended output swing v se 0.5 ? 0.93 vpp pll performance jitter generation j gen f out = 622.08 mhz, lvpecl output format 50 khz?80 mhz ?0.3tbdps rms 12 khz?20 mhz ? 0.3 tbd ps rms jitter transfer j pk ?0.050.1 db external reference jitter transfer j pkextn ?tbdtbddb phase noise cko pn f out = 622.08 mhz 100 hz offset ? tbd tbd dbc/hz 1 khz offset ? tbd tbd dbc/hz 10 khz offset ? tbd tbd dbc/hz 100 khz offset ? tbd tbd dbc/hz 1 mhz offset ? tbd tbd dbc/hz subharmonic noise sp subh phase noise @ 100 khz offset ? tbd tbd dbc spurious noise sp spur max spur @ n x f3 (n > 1, n x f3 < 100 mhz) ? tbd tbd dbc package thermal resistance junction to ambient ja still air ? 40 ? oc/w table 1. performance specifications (continued) (v dd = 1.8 or 2.5 v 10%, t a =?40 to 85oc) parameter symbol test condition min typ max unit note: for a more comprehensive listing of device specifications , please consult the silicon laboratories any-rate precision clock family reference manual. this document can be downloaded from www.silabs.com/timing .
si5368 4 preliminary rev. 0.3 figure 1. typical phase noise plot table 2. absolute maximum ratings parameter symbol value unit dc supply voltage v dd ?0.5 to 2.75 v lvcmos input voltage v dig ?0.3 to (v dd + 0.3) v junction temperature t jct ?55 to 150 oc storage temperature range t stg ?55 to 150 oc esd hbm tolerance (100 pf, 1.5 k ? )2kv esd mm tolerance 200 v latch-up tolerance jesd78 compliant note: permanent device damage may occur if the absolute maxi mum ratings are exceeded. functional operation should be restricted to the conditions as specified in the operation se ctions of this data sheet. exposure to absolute maximum rating conditions for extended periods of time may affect device reliability. 155.52 mhz in, 622.08 mhz out -160 -140 -120 -100 -80 -60 -40 -20 0 100 1000 10000 100000 1000000 10000000 100000000 offset frequency (hz) phase noise (dbc/hz )
si5368 preliminary rev. 0.3 5 figure 2. si5368 typical application circuit (i 2 c control mode) figure 3. si5368 typical application circuit (spi control mode)
si5368 6 preliminary rev. 0.3 1. functional description the si5368 is a jitter-attenuating precision clock multiplier for applications requiring sub 1 ps rms jitter performance. the si5368 accepts four clock inputs ranging from 2 khz to 710 mhz and generates five independent, synchronous clock outputs ranging from 2 khz to 945 mhz and select frequencies to 1.4 ghz. the device provides virtually any frequency translation combination across this operating range. independent dividers are available for every input clock and output clock, so the si5368 can acc ept input clocks at different frequencies and it can ge nerate output clocks at different frequencies. the si5368 input clock frequency and clock multiplication ratio are programmable through an i 2 c or spi interface. optionally, the fifth clock output can be configured as a 2 to 512 khz sonet/sdh frame synchron ization output that is phase aligned with one of t he high-speed output clocks. silicon laboratories offers a pc-based software utility, dspll sim , that can be used to determine the optimum pll divider settings for a given input frequency/clock multiplication ratio combinat ion that minimizes phase noise and power consumpt ion. this utility can be downloaded from www.silabs.com/timing . the si5368 is based on s ilicon laboratories' 3rd- generation dspll ? technology, which provides any- rate frequency synthesis and jitter attenuation in a highly integrated pll solution that eliminates the need for external vcxo and loop filter components. the si5368 pll loop bandwidth is digitally programmable and supports a range from 60 hz to 8.4 khz. the dspll sim software utility can be used to calculate valid loop bandwidth settings for a given input clock frequency/clock mu ltiplication ratio. the si5368 supports hitless switching between input clocks in compliance with gr-253-core and gr-1244- core that greatly minimizes the propagation of phase transients to the clock outputs during an input clock transition (<200 ps typ). manual, automatic revertive and non-revertive input clock switching options are available. the si53 68 monitors the f our input clocks for loss-of-signal and provides a los alarm when it detects missing pulses on any of the four input clocks. the device monitors the lock status of the pll. the lock detect algorithm works by continuously monitoring the phase of the input clock in relation to the phase of the feedback clock. the si5368 monitors the frequency of ckin1, ckin3, and ckin4 with respect to a reference frequency applied to ckin2, and generates a frequency offset alarm (fos) if the th reshold is exceeded. this fos feature is available for sonet applications in which both the monitored fr equency on ckin1, ckin3, and ckin4 and the reference frequency are integer multiples of 19.44 mhz. both stratum 3/3e and sonet minimum clock (smc) fos thresholds are supported. the si5368 provides a digital hold capability that allows the device to continue generation of a stable output clock when the selected input reference is lost. during digital hold, the dspll generates an output frequency based on a historical average that existed a fixed amount of time before the error event occurred, eliminating the effects of phase and frequency transients that may occur immediately preceding digital hold. fine phase adjustment is available and is set using the flat register bits. the nominal range and resolution of the flat[14:0] latency adjustment word are: 110 ps and 3.05 ps, respectively. the si5368 has five differential clock outputs. the electrical format of the clock outputs is programmable to support lvpecl, lvds, cml, or cmos loads. if not required, unused clock outputs can be powered down to minimize power consumption. the phase difference between the selected input clock and the output clocks is adjustable in 200 ps increments for system skew control. in addition, the phase of one output clock may be adjusted in relation to the phase of the other output clock. the resolution varies from 800 ps to 2.2 ns depending on the pll divider settings. consult the dspll sim configuration software to determine the phase offset resolution for a given input clock/clock multiplication ratio comb ination. for system-level debugging, a bypass mode is available which drives the output clock directly from the input clock, bypassing the internal dspll. the device is powered by a single 1.8 or 2.5 v supply. 1.1. external reference an external, 38.88 mhz clock or a low-cost 114.285 mhz 3rd overtone crystal is used as part of a fixed-frequency oscillator within the dspll. this external reference is required for the device to perform jitter attenuation. silic on laboratories recommends using a high-quality crystal from txc ( www.txc.com.tw ), part number 7ma1400014. an external 38.88 mhz clock from a high quality ocxo or tcxo can also be used as a reference for the device. in digital hold, the dspl l remains locked to this external reference. any changes in the frequency of this reference when the dspll is in digital hold, will be tracked by the output of th e device. note that crystals can have temperature sensitivities. 1.2. further documentation consult the silicon laborato ries any-rate precision clock family reference manual (frm) for more detailed information about the si5368. the frm can be downloaded from www.silabs.com/timing . silicon laboratories has developed a pc-based software utility called dspll sim to simplify device configuration, including frequency planning and loop bandwidth selection. this utility can be downloaded from www.silabs.com/timing .
si5368 preliminary rev. 0.3 7 2. pin descriptions: si5368 table 3. si5368 pin descriptions pin # pin name i/o signal level description 1, 2, 4, 20, 22, 23, 24, 25, 37, 47, 48, 50, 51, 52, 53, 56, 66, 67, 72, 73, 74, 75, 80, 85, 95 nc no connect. these pins must be left unc onnected for normal operation. 3rst ilvcmos external reset. active low input that performs external hardware reset of device. resets all inte rnal logic to a known state and forces the device registers to their default value. clock outputs are tristated during reset. after rising edge of rst signal, the device will perform an internal self-calibration. this pin has a weak pull-up. note: internal register names are indicated by underlined italics, e.g. int_pin . see si5368 register map. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 31 30 29 28 27 26 32 64 61 62 63 57 58 59 60 50 51 52 53 54 55 56 49 nc fs_align c2b gnd c1b c3b xa xb vdd ckin3+ ckin3? rate1 ckin1+ ckin1? ckin2+ ckin2? rate0 ckin4+ ckin4? lol sdi nc nc a1 a0 gnd vdd sda_sdo scl c2a c1a cs1_c4a nc dec inc ckout3+ cmode ckout3? nc ckout1+ ckout1? fs_out+ fs_out? vdd ckout2+ ckout2? nc ckout4+ nc ckout4? 17 20 19 18 24 23 22 21 25 74 73 72 71 70 69 68 67 66 65 75 100 89 90 91 92 93 94 95 96 97 98 99 76 77 78 79 80 81 82 83 84 85 86 87 88 rst nc nc vdd gnd cs0_c3a gnd gnd gnd nc nc nc gnd vdd gnd gnd gnd gnd gnd gnd gnd gnd vdd a2_ss gnd nc vdd vdd vdd vdd vdd vdd vdd vdd vdd vdd nc nc nc nc nc vdd nc nc nc nc nc nc nc si5368 gnd pad int_alm
si5368 8 preliminary rev. 0.3 5, 6, 15, 27, 62, 63, 76, 79, 81, 84, 86, 89, 91, 94, 96, 99, 100 v dd vdd supply v dd . the device operates from a 1.8 or 2.5 v supply. bypass capaci- tors should be associated with the following v dd pins: pins bypass cap 5, 6 0.1 f 15 0.1 f 27 0.1 f 62, 63 0.1 f 76, 79 1.0 f 81, 84 0.1 f 86, 89 0.1 f 91, 94 0.1 f 96, 99, 100 0.1 f 7, 8, 14, 18, 19, 26, 28, 31, 33, 36, 38, 41, 43, 46, 64, 65 gnd gnd supply ground. this pin must be connected to system ground. minimize the ground path impedance for optimal performance. 9c1bolvcmos ckin1 invalid indicator. this pin performs the ck1_bad function if ck1_bad_pin =1 and is tristated if ck1_bad_pin = 0. active polarity is con- trolled by ck_bad_pol . 0 = no alarm on ckin1. 1 = alarm on ckin1. 10 c2b o lvcmos ckin2 invalid indicator. this pin performs the ck2_bad function if ck2_bad_pin =1 and is tristated if ck2_bad_pin = 0. active polarity is con- trolled by ck_bad_pol . 0 = no alarm on ckin2. 1 = alarm on ckin2. 11 c3b o lvcmos ckin3 invalid indicator. this pin performs the ck3_bad function if ck3_bad_pin =1 and is tristated if ck3_bad_pin = 0. active polarity is con- trolled by ck_bad_pol . 0 = no alarm on ckin3. 1 = alarm on ckin3. 12 int_alm o lvcmos interrupt/alarm output indicator. this pin functions as a maskabl e interrupt output with active polarity controlled by the int_pol register bit. the int output function can be turned off by setting int_pin = 0. if the alr- mout function is desired instead on this pin, set alrmout_pin = 1 and int_pin =0. 0= alrmout not active. 1= alrmout active. the active polarity is controlled by ck_bad_pol . if no function is selected, the pin tristates. table 3. si5368 pin descriptions (continued) pin # pin name i/o signal level description note: internal register names are indicated by underlined italics, e.g. int_pin . see si5368 register map.
si5368 preliminary rev. 0.3 9 13 57 cs0_c3a cs1_c4a i/o lvcmos input clock select/ckin3 or ckin4 active clock indicator. if manual clock selection is chosen, and if cksel_pin =1, the cksel pins control cl ock selection and the cksel_reg bits are ignored. if cksel_pin =0, the cksel_reg register bits control this function and these inputs tristate. if these pins are not function- ing as the cs[1:0] inputs and auto clock selection is enabled, then they serve as the ckin_n active clock indicator. 0 = ckin3 (ckin4) is not the active input clock 1 = ckin3 (ckin4) is currently the active input to the pll the ckn_actv_reg bit always reflects the active clock status for ckin_n. if ckn_actv_pin = 1, this status will also be reflected on the cna pin with active polarity controlled by the ck_actv_pol bit. if ckn_actv_pin = 0, this output tristates. this pin has a weak pull-down. 16 17 xa xb ianalog external crystal or reference clock. external crystal should be connected to these pins to use exter- nal oscillator base d reference. if a sing le-ended external refer- ence is used, ac couple reference clock to xa input and leave xb pin floating. external reference must be from a high-quality clock source (tcxo, ocxo). fr equency of crystal or external clock is set by the rate pins. 21 fs_align i lvcmos fsync alignment control. if fsync_align_pin = 1 and ck_config = 1, a logic high on this pin causes the fs_out phase to be realigned to the ris- ing edge of the currently active input sync (ckin_3 or ckin_4). if fsync_align_pin = 0, this pin is ignored and the fsync_align_reg bit performs this function. 0 = no realignment. 1 = realign. this pin has a weak pull-down. 29 30 ckin4+ ckin4? imulti clock input 4. differential clock input. this inpu t can also be driven with a sin- gle-ended signal. ckin4 serves as the frame sync input associ- ated with the ckin2 clock when ck_config_reg =1. table 3. si5368 pin descriptions (continued) pin # pin name i/o signal level description note: internal register names are indicated by underlined italics, e.g. int_pin . see si5368 register map. cs[1:0] active input clock 00 ckin1 01 ckin2 10 ckin3 11 ckin4
si5368 10 preliminary rev. 0.3 32 42 rate1 rate0 i 3-level external crystal or reference clock rate. three level inputs that select the type and rate of external crys- tal or reference clock to be applied to the xa/xb port. settings: hh = no crystal or reference clock. converts part to a si5367 device. see si5367 data sheet for operation. (wideband). mm = 114.285 mhz 3rd ot crystal (narrowband). lm = 38.88 mhz external clock (narrowband). all others = reserved. 34 35 ckin2+ ckin2? imulti clock input 2. differential input clock. this inpu t can also be driven with a sin- gle-ended signal. 39 40 ckin3+ ckin3? imulti clock input 3. differential clock input. this inpu t can also be driven with a sin- gle-ended signal. ckin3 serves as the frame sync input associ- ated with the ckin1 clock when ck_config_reg =1. 44 45 ckin1+ ckin1? imulti clock input 1. differential clock input. this inpu t can also be driven with a sin- gle-ended signal. 49 lol o lvcmos pll loss of lock indicator. this pin functions as the active high pll loss of lock indicator if the lol_pin register bit is set to one. 0 = pll locked. 1 = pll unlocked. if lol_pin = 0, this pin will tristate. active polarity is controlled by the lol_pol bit. the pll lock status will always be reflected in the lol_int read only register bit. 54 dec i lvcmos coarse latency decrement. a pulse on this pin decreases the input to output device latency by 1/fosc (approximately 200 ps). detailed operations and tim- ing characteristics for this pin may be found in the any-rate precision clock family reference manual. there is no limit on the range of latency adjustment by this method. pin control is enabled by setting incdec_pin = 1 (default). if incdec_pin = 0, this pin is ignored and coarse output latency is controlled via the clat register. if both inc and dec are tied high, phase buildout is disabled and the device maintains a fixed-phase relationship between the selected input clock and the output clock during an input clock switch. detailed operations and timing characteristics for these pins may be found in the any-rate precision clock fam- ily reference manual. this pin has a weak pull-down. table 3. si5368 pin descriptions (continued) pin # pin name i/o signal level description note: internal register names are indicated by underlined italics, e.g. int_pin . see si5368 register map.
si5368 preliminary rev. 0.3 11 55 inc i lvcmos coarse latency increment. a pulse on this pin increases the input to output device latency by 1/fosc (approximately 200 ps). detailed operations and tim- ing characteristics for this pin may be found in the any-rate precision clock family reference manual. there is no limit on the range of latency adjustment by this method. pin control is enabled by setting incdec_pin = 1 (default). if incdec_pin = 0, this pin is ignored and coarse output latency is controlled via the clat register. if both inc and dec are tied high, phase buildout is disabled and the device maintains a fixed-phase relationship between the selected input clock and the output clock during an input clock switch. detailed operations and timing characteristics for these pins may be found in the any-rate precision clock fam- ily reference manual. this pin has a weak pull-down. 58 c1a o lvcmos ckin1 active cl ock indicator. this pin serves as the ckin1 active clock indicator. the ck1_actv_reg bit always reflects the active clock status for ckin1. if ck1_actv_pin = 1, this status will also be reflected on the c1a pin with active polarity controlled by the ck_actv_pol bit. if ck1_actv_pin = 0, this output tristates. 59 c2a o lvcmos ckin2 active cl ock indicator. this pin serves as the ckin2 active clock indicator. the ck2_actv_reg bit always reflects the active clock status for ckin_2. if ck2_actv_pin = 1, this status will also be reflected on the c2a pin with active polarity controlled by the ck_actv_pol bit. if ck2_actv_pin = 0, this output tristates. 60 scl i lvcmos serial clock. this pin functions as the serial port clock input for both spi and i 2 c modes. this pin has a weak pull-down. 61 sda_sdo i/o lvcmos serial data. in i 2 c microprocessor control mode (cmode = 0), this pin func- tions as the bidirectional serial data port.in spi microprocessor control mode (cmode = 1), this pi n functions as the serial data output. 68 69 a0 a1 ilvcmos serial port address. in i 2 c microprocessor control mode (cmode = 0), these pins function as hardware controlled address bits. in spi micropro- cessor control mode (cmode = 1), these pins are ignored. this pin has a weak pull-down. 70 a2_ss ilvcmos serial port addr ess/slave select . in i 2 c microprocessor control mode (cmode = 0), this pin func- tions as a hardware controlled address bit. in spi microprocessor control mode (cmode = 1), this pin functions as the slave select input. this pin has a weak pull-down. table 3. si5368 pin descriptions (continued) pin # pin name i/o signal level description note: internal register names are indicated by underlined italics, e.g. int_pin . see si5368 register map.
si5368 12 preliminary rev. 0.3 71 sdi i lvcmos serial data in. in spi microprocessor control mode (cmode = 1), this pin functions as the se rial data input. in i 2 c microprocessor control mode (cmode = 0), this pin is ignored. this pin has a weak pull-down. 77 78 ckout3+ ckout3? omulti clock output 3. differential clock output. output signal format is selected by sfout3_reg register bits. output is differential for lvpecl, lvds, and cml compatible modes. for cmos format, both output pins drive identical single-ended clock outputs. 82 83 ckout1? ckout1+ omulti clock output 1. differential clock output. output signal format is selected by sfout1_reg register bits. output is differential for lvpecl, lvds, and cml compatible modes. for cmos format, both output pins drive identical single-ended clock outputs. 87 88 fs_out? fs_out+ omulti frame sync output. differential frame sync output or fifth high-speed clock output. output signal format is selected by sfout_fsync_reg reg- ister bits. output is different ial for lvpecl, lvds, and cml compatible modes. for cmos form at, both output pins drive identical single-ended clock out puts. duty cycle and active polarity are controlled by fsync_pw and fsync_pol bits, respectively. detailed operations and timing characteristics for these pins may be found in the any-rate precision clock fam- ily reference manual. 90 cmode i lvcmos control mode. selects i 2 c or spi control mode for the device. 0=i 2 c control mode. 1 = spi control mode. 92 93 ckout2+ ckout2? omulti clock output 2. differential clock output. output signal format is selected by sfout2_reg register bits. output is differential for lvpecl, lvds, and cml compatible modes. for cmos format, both output pins drive identical single-ended clock outputs. 97 98 ckout4? ckout4+ omulti clock output 4. differential clock output. output signal format is selected by sfout4_reg register bits. output is differential for lvpecl, lvds, and cml compatible modes. for cmos format, both output pins drive identical single-ended clock outputs. gnd pad gnd pad gnd supply ground pad. the ground pad must provide a low thermal and electrical impedance to a ground plane. table 3. si5368 pin descriptions (continued) pin # pin name i/o signal level description note: internal register names are indicated by underlined italics, e.g. int_pin . see si5368 register map.
si5368 preliminary rev. 0.3 13 3. ordering guide ordering part number output clock frequency range package temperature range SI5368A-B-GQ 2 khz?945 mhz 970?1134 mhz 1.213?1.417 ghz 100-pin 14 x 14 mm tqfp ?40 to 85 c si5368b-b-gq 2 khz?808 mhz 100-pin 14 x 14 mm tqfp ?40 to 85 c si5368c-b-gq 2 khz?346 mhz 100-pin 14 x 14 mm tqfp ?40 to 85 c
si5368 14 preliminary rev. 0.3 4. package outl ine: 100-pin tqfp figure 4 illustrates the package details for the si5368. table 4 lis ts the values for the di mensions shown in the illustration. figure 4. 100-pin thin quad flat package (tqfp) table 4. 100-pin package diagram dimensions dimension min nom max dimension min nom max a ? ? 1.20 e 16.00 bsc. a1 0.05 ? 0.15 e1 14.00 bsc. a2 0.95 1.00 1.05 e2 3.85 4.00 4.15 b 0.17 0.22 0.27 l 0.45 0.60 0.75 c 0.09 ? 0.20 aaa ? ? 0.20 d 16.00 bsc. bbb ? ? 0.20 d1 14.00 bsc. ccc ? ? 0.08 d2 3.85 4.00 4.15 ddd ? ? 0.08 e0.50 bsc. 0o 3.5o 7o notes: 1. all dimensions shown are in mil limeters (mm) unless otherwise noted. 2. dimensioning and tolerancing per ansi y14.5m-1994. 3. this package outline conforms to jedec ms-026, variant aed-hd. 4. recommended card reflow profile is per the jede c/ipc j-std-020c specification for small body components.
si5368 preliminary rev. 0.3 15 5. recommended pcb layout figure 5. pcb land pattern diagram
si5368 16 preliminary rev. 0.3 table 5. pcb land pattern dimensions dimension min max e0.50 bsc. e 15.40 ref. d 15.40 ref. e2 3.90 4.10 d2 3.90 4.10 ge 13.90 ? gd 13.90 ? x ? 0.30 y1.50 ref. ze ? 16.90 zd ? 16.90 r1 0.15 ref r2 ? 1.00 notes (general): 1. all dimensions shown are in mil limeters (mm) unless otherwise noted. 2. dimensioning and tolerancing is per the ansi y14.5m-1994 specification. 3. this land pattern design is based on ipc-7351 guidelines. 4. all dimensions shown are at maximum material condition (mmc). least material condition (lmc) is calculated based on a fabrication allowance of 0.05 mm. notes (solder mask design): 1. all metal pads are to be non-solder mask defined (nsmd). clearance between the solder mask and the metal pad is to be 60 m minimum, all the way around the pad. notes (stencil design): 1. a stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release. 2. the stencil thickness shou ld be 0.125 mm (5 mils). 3. the ratio of stencil aperture to land pad size should be 1:1 for the perimeter pads. 4. a 4 x 4 array of 0.80 mm square openings on 1.05 mm pitch should be used for the center ground pad. notes (card assembly): 1. a no-clean, type-3 solder paste is recommended. 2. the recommended card reflow profile is per the jedec/ipc j-std-020c specification for small body components.
si5368 preliminary rev. 0.3 17 d ocument c hange list revision 0.1 to revision 0.2 changed lvttl to lvcmos in table 2, ?absolute maximum ratings,? on page 4. updated figure 2 and figure 3 on page 5. updated ?2. pin descriptions: si5368?. added rate0 to pin description. by changing rate[1:0] the part can emulate a si5367. changed xa/xb pin description to support both differential and single ended external refclk. revision 0.2 to revision 0.3 added figure 1, ?typical phase noise plot,? on page 4. updated figure 2, ?si53 68 typical application circuit (i 2 c control mode),? and figure 3, ?si5368 typical application circuit (spi control mode),? on page 5 to show inc and dec. updated ?2. pin descriptions: si5368?. changed font of register names to underlined italics . updated "3. ordering guide" on page 13. added ?5. recommended pcb layout?.
si5368 18 preliminary rev. 0.3 c ontact i nformation silicon laboratories inc. 400 west cesar chavez austin, tx 78701 tel: 1+(512) 416-8500 fax: 1+(512) 416-9669 toll free: 1+(877) 444-3032 email: clockinfo@silabs.com internet: www.silabs.com silicon laboratories, silicon labs, and dspll are trademarks of silicon laboratories inc. other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. the information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. silicon laboratories assumes no responsibility for errors and omissions, and disclaims responsib ility for any consequences resu lting from the use of information included herein. a dditionally, silicon laboratorie s assumes no responsibility for the functioning of und escribed features or parameters. silicon laboratories reserves the right to make changes without further notice . silicon laboratories makes no wa rranty, rep- resentation or guarantee regarding the suitability of its products for any particular purpose, nor does silicon laboratories as sume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any an d all liability, including wi thout limitation conse- quential or incidental damages. silicon laborat ories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of the silicon laboratories product could create a s ituation where per- sonal injury or death may occur. should buyer purchase or us e silicon laboratories products for any such unintended or unauthor ized ap- plication, buyer shall indemnify and hold silicon laboratories harmless against all claims and damages.

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