Direction marking
No.1 pin

Suggested Land Pattern
Unit:mm(inch) Tolerance:±0.1(±0.004)
		Example for Dielectric Layer
	Solder Resist	Dielectric Layer (εr)
			GND Plane
	εr , t and W

Reflow Soldering Conditions J-STD-020C Pb-Free Standard Storage conditions are as per MSL1. These component families are not moisture-sensitive. Baking prior to reflow is not required. Maximum Cycles: 3x

Typical Applications and Termination Methods

(1) PECL

(2) LVPECL

(3) Twisted Pair Termination

(4) LVDS

Output Waveforms

CDLF05C (Actual measurement) 10Gbps PRBS Response Differential Transmission / Reflection [X-axis: 20ps/Div, Y-axis: 400mV/Div] 12.5Gbps PRBS Response Differential Group Delay [X-axis: 16ps/Div, Y-axis: 400mV/Div] CDLF10C (Actual measurement) 10Gbps PRBS Response Differential Transmission / Reflection [X-axis: 20ps/Div, Y-axis: 400mV/Div] 12.5Gbps PRBS Response Differential Group Delay [X-axis: 16ps/Div, Y-axis: 400mV/Div] CDLF15C (Actual measurement) 10Gbps PRBS Response Differential Transmission / Reflection [X-axis: 20ps/Div, Y-axis: 400mV/Div] 12.5Gbps PRBS Response Differential Group Delay [X-axis: 16ps/Div, Y-axis: 400mV/Div] CDLF20C (Actual measurement) 10Gbps PRBS Response Differential Transmission / Reflection [X-axis: 20ps/Div, Y-axis: 400mV/Div] 12.5Gbps PRBS Response Differential Group Delay [X-axis: 16ps/Div, Y-axis: 400mV/Div] CDLF30C (Actual measurement) 10Gbps PRBS Response Differential Transmission / Reflection [X-axis: 20ps/Div, Y-axis: 400mV/Div] 12.5Gbps PRBS Response Differential Group Delay [X-axis: 16ps/Div, Y-axis: 400mV/Div] Technical Note Within tens of picoseconds of delay time adjustment, a substrate trace can be used for the return circuit. For a 100ps adjustment, either a substrate trace of a coupled differential pair, as shown in Fig.1, or a substrate trace of an uncoupled differential pair, as shown in Fig.2 can be assumed. However, the trace area in either case will become very large. Moreover, as shown in Fig. 1, a time lag arises between the differential pairs due to the imbalance at the corner. Common mode noise will occur at the mid-point, as will the fear of noise radiation. It is very likely that high-quality 10GHz+ band width characteristics cannot be obtained for the circuit shown in Fig.2. Fig.1 and Fig.2 are verified with an electromagnetic simulator and the characteristics are compared to the results utilizing the CDLF10C. The published Recommended Land Pattern is assumed for the substrate: W=0.38mm, t=0.3mm, and εr=4.1. The underside of the substrate is GND plane. Mid-point Fig.1 Fig.2 Fig.3 Trace example of a coupled differential pair (Trace area: 40mm²) Trace example of an uncoupled differential pair (Trace area: 30mm²) CDLF10C Mounting Image (Footprint:2.5mm²) Coupled Trace Comparison (Fig.1) and CDLF10C (Fig.3) Common-mode Waveform Common-mode Spectrum Uncoupled Trace Comparison (Fig.2) and CDLF10C (Fig.3) Differential Transmission Differential Group Delay Differential Output Eye-pattern(10Gbps PRBS、tr/tf=20ps(20%-80%))