Data Sheet

ADL5513

EVALUATION BOARD

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Rev. B | 23 of 25

Figure 47. Evaluation Board Schematic

Figure 48. Component Side Layout

Figure 49. Component Side Silkscreen

Table 5. Evaluation Board Configuration Options

Component

Function

Default Value

C1, C2, R1

Input interface. The 52.3 Ω resistor in Position R1 combines with the internal input impedance of the

ADL5513 to give a broadband input impedance of about 50 Ω. C1 and C2 are dc-blocking capacitors.

A reactive impedance match can be implemented by replacing R1 with an inductor and C1 and C2 with

appropriately valued capacitors.

R1 = 52.3 Ω (Size 0402)

C1 = 47 nF (Size 0402)

C2 = 47 nF (Size 0402)

C3, C4, C5, C6, R11, R12

Power supply decoupling. The nominal supply decoupling consists of a 100 pF filter capacitor placed

physically close to the ADL5513 and a 0.1 µF capacitor placed nearer to the power supply input pin. If

additional isolation from the power supply is required, a small resistance (R11 or R12) can be installed

between the power supply and the ADL5513.

C3 = 0.1 µF (Size 0402)

C4 = 100 pF (Size 0402)

C5 = 100 pF (Size 0402)

C6 = 0.1 µF (Size 0402)

R11 = 0 Ω (Size 0402)

R12 = 0 Ω (Size 0402)

C7

Filter capacitor.The low-pass corner frequency of the circuit that drives the VOUT pin can be lowered

by placing a capacitor between CLPF and ground. Increasing this capacitor increases the overall

rise/fall time of the ADL5513 for pulsed input signals.

C7 = 1000 pF (Size 0402)