ADRF6614ACPZ-R7 datasheet(59/61 Pages) AD

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Data Sheet

ADRF6614

Rev. 0 | Page 59 of 61

Table 47. Evaluation Board Bill of Materials

Components

Description

Default Conditions

C1, C2, C8, C11, C12,

C13, C14, C15, C18,

C19, C20, C23, C26,

C27

Power supply decoupling. Nominal supply decoupling consists of a

0.1 μF capacitor to ground in parallel with a 10 pF capacitor to

ground positioned as close to the device as possible.

C1, C2, C26, C27 = 0.1 μF (size 0402)

C8, C11, C12, C13, C14, C15, C18, C19

C20, C23 = 10 pF (size 0402)

C6, C7, C24, C25

RF input interface. The input channels are ac-coupled through C6 and

C24. C7 and C25 provide bypassing for the center tap of the RF input

baluns.

C6, C24 = 22 pF (size 0402)

C7, C25 = 22 pF (size 0402)

C3, C4, C5, C28, C29,

C30, L1, L2, L3, L4,

R20, R21, R22, R23,

T1, T2

IF output interface. The open-collector IF output interfaces are biased

through pull-up choke Inductors L1, L2, L3, and L4. T1 and T2 are 4:1

impedance transformers used to provide single-ended IF output

interfaces, with C5 and C30 providing center tap bypassing. Remove

R21 and R22 for balanced output operation.

C3, C4, C5, C28, C29, C30 = 120 pF (size 0402)

L1, L2, L3, L4 = 470 nH (size 0603)

R20, R23 = open

R21, R22 = 0 Ω (size 0402)

T1, T2 = TC4-1W+ (Mini-Circuits®)

C17

LO interface. C17 provides ac coupling for the local oscillator input.

C17 = 22 pF (size 0402)

R1, R2

Bias control. R1and R2 set the bias point for the internal IF amplifier.

R1, R2 = 910 Ω (size 0402)

Figure 122. Evaluation Board, Top Layer

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