HMC129ALC4TR-R5 datasheet(15/16 Pages) AD

15 / 16 page

Data Sheet

HMC129ALC4

Rev. 0 | Page 15 of 16

APPLICATIONS INFORMATION

TYPICAL APPLICATION CIRCUIT

Figure 39 shows the typical application circuit for the

HMC129ALC4. The HMC129ALC4 is a passive device

and does not require any external components. The LO pin

is internally ac-coupled. The RF and IF pins are internally

dc-coupled. When IF operation to dc is not required, using an

external series capacitor is recommended, of a value chosen to

pass the necessary IF frequency range. When IF operation to dc

is required, do not exceed the IF source and sink current rating

specified in the Absolute Maximum Ratings section.

Figure 39. Typical Application Circuit

EVALUATION PCB INFORMATION

Use RF circuit design techniques for the circuit board used in

the application. Ensure that signal lines have 50 Ω impedance,

and connect the package ground leads and the exposed pad

directly to the ground plane (see Figure 40). Use a sufficient

number of via holes to connect the top and bottom ground

planes. The evaluation circuit board shown in Figure 40 is

available from Analog Devices, Inc., upon request.

Table 5. List of Materials for Evaluation PCB

EV1HMC129ALC4

Item

Description

J1 to J3

PCB mount SMA connector

HMC129ALC4

PCB1

109726 evaluation board on Rogers 4350

1 109726 is the raw bare PCB identifier. Reference EV1HMC129ALC4 when

ordering the complete evaluation PCB.

Figure 40. Evaluation PCB Top Layer

NIC

GND

NIC

14 NIC

15 GND

16 LO

17 GND

18 NIC

HMC129ALC4

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