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Si5342H Datasheet(PDF) 10 Page - Silicon Laboratories |
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Si5342H Datasheet(HTML) 10 Page - Silicon Laboratories |
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10 / 56 page  Si5344H/42H 10 Rev. 1.0 Differential Output Impedance4 ZO —100 — Power Supply Noise Rejection5 PSRR 10 kHz sinusoidal noise — –101 — dBc 100 kHz sinusoidal noise — –96 — 500 kHz sinusoidal noise — –99 — 1 MHz sinusoidal noise — –97 — Output-output Cross- talk XTALK Measured spur from adjacent output6 —–88 — dBc Table 5. Differential Clock Output Specifications (Continued) (VDD = 1.8 V ±5%, VDDA = 3.3V ±5%, VDDO = 1.8 V ±5%, 2.5 V ±5%, or 3.3 V ±5%, TA = –40 to 85 °C) Parameter Symbol Test Condition Min Typ Max Unit Note: 1. For normal mode, the amplitude and common-mode settings are programmable through register settings and can be stored in NVM. Each output driver can be programmed independently. The typical LVDS maximum is 100 mV (or 80 mV) higher than the TIA/EIA-644 maximum. When in LVPECL mode and fOUT>717.5 MHz note VOUT may not meet standard LVPECL levels, but provides the greatest output voltage swing. Also note that the output voltage swing specifications are given in peak-to- peak single-ended swing. 2. Max frequency using MultiSynth outputs is determined by the VCO frequency. Please use ClockBuilder Pro to determine the maximum output frequency for any given frequency plan. 3. High-speed outputs indicates no multiSynth is used (i.e., not fractional synthesis). 4. Not all combinations of voltage swing and common mode voltages settings are possible. See the reference manual for details. 5. Measured for 156.25 MHz carrier frequency. 100 mVpp sinewave noise added to VDDO = 3.3 V and noise spur amplitude measured. 6. Measured across two adjacent outputs, both in LVDS mode, with the victim running at 155.52 MHz and the aggressor at 156.25 MHz. Refer to “AN862: Optimizing Si534x Jitter Performance in Next Generation Internet Infrastructure Systems” for guidance on crosstalk optimization. Note that all active outputs must be terminated when measuring crosstalk. OUTx OUTx Vpp_se Vpp_se Vpp_diff = 2*Vpp_se Vcm Vcm |
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