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NBSG86A Fiches technique(PDF) 9 Page - ON Semiconductor |
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NBSG86A Fiches technique(HTML) 9 Page - ON Semiconductor |
9 / 20 page NBSG86ABAEVB http://onsemi.com 9 2:1 MUX Function Setup (continued) Connect the Inputs Step 2: For Differential Mode (3.3 V and 2.5 V operation) 2a: Connect the differential outputs of the generator to the differential inputs of the device (D1/D1). 2b: Connect the D0 input to VTT and the D0 input to VCC. 2c: Connect the SEL input to VCC and the SEL input to VTT. 2d: Connect the generator trigger to the oscilloscope trigger. For Single-Ended Mode (3.3 V operation only) 2a: Connect an AC-coupled output of the generator to the desired differential input of the device. 2b: Connect the unused differential input of the device to VTT (GND) through a 50 W resistor. 2c: Connect the D0 input to VTT and the D0 input to VCC. 2d: Connect the SEL input to VCC and the SEL input to VTT. 2e: Connect the generator trigger to the oscilloscope trigger. All Function Setups Connect OLS (Output Level Select) to the required voltage to obtain desired output amplitude. Refer to the NBSG86A device data sheet page 2 OLS voltage table. Setup Input Signal Step 3: 3a: Set the signal generator amplitude to 400 mV. Note that the signal generator amplitude can vary from 75 mV to 900 mV to produce a 400 mV DUT output. 3b: Set the signal generator offset to 660 mV (the center of a nominal RSECL output). Note that the VIHCMR (Input High Voltage Common Mode Range) allows the signal generator offset to vary as long as VIH is within the VIHCMR range. Refer to the device data sheet for further information. 3c: Set the generator output for a square wave clock signal with a 50% duty cycle, or for a PRBS data signal. Connect Output Signals Step 4: 4a: Connect the outputs of the evaluation board (Q, Q) to the oscilloscope. The oscilloscope sampling head must have internal 50 W termination to ground. NOTE: Where a single output is being used, the unconnected output for the pair must be terminated to VTT through a 50 W resistor for best operation. Unused pairs may be left unconnected. Since VTT = 0 V, a standard 50 W SMA termination is recommended. |
Numéro de pièce similaire - NBSG86A |
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Description similaire - NBSG86A |
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