You can use LVPECL buffer (LMK00301/30x, CDCLVP1204/12xx) and level-translate to interface to HSTL inputs.
See Figure 8 in this app note: www.ti.com/.../scaa059c.pdf
Alan
Part Number: LMX2582 Other Parts Discussed in Thread: CDCLVP1204 , CDCLVC1103 Hi team,
The customer would like to use CDCLVP1204 + LMX2582. The input frequency is 100MHZ. He needs to output 100MHZ, 2GHZ and 4GHZ.
The output frequency 100MHZ is used…
Hi Amit,
From the CDCLVP1204 datasheet, max VOH = Vcc-0.9 V and min VOL = Vcc-1.7 V. This gives a maximum single ended swing of 0.8V. The unused output can be terminated as explained earlier. It should be possible to AC couple the single ended output…
Hi Hori-San,
We have the following thermal data for CDCLVP1204.
Theta JA-High K (standard datasheet value)
51.8
Theta JC, top (standard datasheet value)
79
Theta JB (standard datasheet value)
20
Psi JT …
Hi Mickey,
1. Yes, Vac_ref can be left floating if unused.
2. The difference between these parts is as follows. See also the block diagram in the respective datasheets. CDCLVP1102: 1:2 LVPECL buffer CDCLVP2102: 2x 1:2 LVPECL buffer (it is like having…
Brian,
HCSL driver interface to DIFF input of CDCLVP1102. The double termination attenuates the HCSL swing in half to stay within the differential input swing specifications. Rb resistors are used to bias the AC coupled inputs within the input common…
Hi Waqas,
The resistors are necessary for terminating the oscillator's LVPECL output by biasing the internal transistors and cannot be omitted unless the receiver features internal termination at its input. The capacitors are used to AC couple the…
Hi Omid,
What is the preffered output type for the reference clock - Single ended or differential?
We have an 5X7 oscillator family in the design pipeline (Samples April 2015) that can support this frequency with different flavors of output drivers…
Other Parts Discussed in Thread: CDCLVP1204 , CDCLVP1102 I am using the CDCLVP1102 (same family as the CDCLVP1204) to drive PCIexpress 100MHz reference to the input clock pins of Xilinx Virtex6 device. I have two questions:
Where should I locate…
