Datasheet

DS25BR100EVK User Manual
DS25BR110 (U2) Evaluation
The DS25BR110 is a 3.125 Gbps LVDS buffer featuring four levels of receive equalization (Off, Low,
Medium and High). The following is a recommended test setup procedure for the device evaluation. Figure
3 depicts a typical setup and instrumentation used for the device evaluation.
1. Apply the power to the device (3.3V typical) between VDD and VSS banana plug receptacles.
2. Connect desired STRIPLINE to the input of the device using short 50-ohm coaxial cables (e.g.
PE-SR402-AL from www.pasternack.com).
3. Connect a signal source (i.e. signal generator or an LVDS driver) to the IN2 inputs on the board
and adjust the signal parameters (VOH, VOL, VCM) so that they comply with the device input
recommendations.
4. Select equalization level by setting the EQ0 (CON4) and EQ1 (CON3) pins to L or H. Refer to
Table 2.
EQ1 EQ0 Equalization Level
0 0 Off
0 1 Low
1 0 Medium
1 1 High
Table 2. Equalization Level Selection
5. Connect the OUT2 outputs to an oscilloscope and view the output signals with an oscilloscope
with the bandwidth of at least 5 GHz.
Figure 3. DS25BR110 Test Setup Example
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