Cml driver termination

 · CDCM LVPECL-like output termination. Table 4 gives a detailed comparison between traditional LVPECL driver and CML driver with LVPECL-like swing. It shows the great advantages of this LVPECL-like output. Table 4. Driver/Termination Current Level Normalized Current Level Current-Mode/SE V d,pp/Z 0 1x Current-Mode/Diff V d,pp/Z 0 1x Voltage-Mode/SE V d,pp/2Z 0 x Voltage-Mode/Diff V d,pp/4Z 0 x CML Driver w/ Higher Output Stage Supply 28 CK0 D CK90 Vbias VCC_HV VCC_NOM Vcs=~1V PGen ESD ESD Kim, ISSCC V/V CML Line Driver/Receiver. The SYAR can process clock signals as fast as GHz or data patterns up to Gbps. The differential input includes Micrel’s unique, 3-pin input termination architecture that interfaces to LVPECL, LVDS or CML differential signals, as small as mV (mV. pp) without any level-shifting or termination.

• An ideal voltage-mode driver with differential RX termination enables a potential4x reduction in driver power • Actualdriver power levels also depend on • Output impedance control • Pre-driver power • Equalization implementation 23 Driver/Termination Current Level Normalized Current Level Current-Mode/SE V d,pp/Z 0 1x Current-Mode. The CML interface drivers provide several design features, including high-speed capabilities, adjustable logic output swing, level adjustment, and adjustable slew rate. Current Texas Instruments serial gigabit solution devices that have an integrated CML driver are the TLK, TLK, TLK, and TLK CML Output Stage. Driver CML Receiver Ω Figure 6. LVPECL to CML The most widely used method of translating from LVPECL to CML is through ac-coupling. AC-coupling is recommended for dc-balanced signals. AC-coupling generates base-line wander in high-speed serial data transmission such as SONET and NRZ encoded data (non dc-balanced).

Ensure that output drivers are terminated correctly and impedance matching Current-Mode Logic (CML) outputs provide similar performance to LVPECL but do. STATUS. Up to Gb/sec CML data rate,; Internal calibrated 50ohm termination,; 6bit programmable CML output. In this work we propose an active termination scheme at the receiver-end for The transmitter is realized by differential current-mode logic(CML) driver.