Datasheet

CLKoutX
CLKoutX*
LVPECL
Receiver
120:
100:Trace
(Differential)
120:
Vcc
Vcc
LVPECL
Driver
82:82:
CLKoutX
CLKoutX*
LVPECL
Receiver
50:
100:Trace
(Differential)
50:
Vcc - 2 V
Vcc - 2 V
LVPECL
Driver
LMK03000, LMK03000C, LMK03000D, LMK03001
LMK03001C, LMK03001D, LMK03033, LMK03033C
www.ti.com SNAS381O –NOVEMBER 2006–REVISED MARCH 2013
For DC coupled operation of an LVPECL driver, terminate with 50 Ω to Vcc - 2 V as shown in Figure 8-5.
Alternatively terminate with a Thevenin equivalent circuit (120 Ω resistor connected to Vcc and an 82 Ω
resistor connected to ground with the driver connected to the junction of the 120 Ω and 82 Ω resistors) as
shown in Figure 8-6 for Vcc = 3.3 V.
Figure 8-5. Differential LVPECL Operation, DC Coupling
Figure 8-6. Differential LVPECL Operation, DC Coupling, Thevenin Equivalent
Copyright © 2006–2013, Texas Instruments Incorporated Application Information 33
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Product Folder Links: LMK03000 LMK03000C LMK03000D LMK03001 LMK03001C LMK03001D LMK03033
LMK03033C