HMC787A

Data Sheet

Rev. 0 | Page 16 of 17

APPLICATIONS INFORMATION

TYPICAL APPLICATION CIRCUIT

Figure 49 shows the typical application circuit for the HMC787A.

The LO and RF pins are internally ac-coupled. When IF operation

is not required until dc, it is recommended to use an ac-coupled

capacitor at the IF port. When IF operation to dc is required,

do not exceed the IF source and sink currents specified in the

Absolute Maximum Ratings section.

9

8

1

37

2

RF

LO

IF

Figure 49. Typical Applications Circuit

EVALUATION PCB INFORMATION

The circuit board used in the application must use RF circuit

design techniques. Signal lines must have 50 Ω impedance, and

the package ground leads and exposed pad must be connected

directly to the ground plane similarly to that shown in Figure 50.

Use a sufficient number of via holes to connect the top and

bottom ground planes. The evaluation circuit board shown in

Figure 50 is available from Analog Devices, Inc., upon request.

Figure 50. Evaluation PCB Top Layer

Table 6. Bill of Materials for the EV1HMC787ALC3B Evaluation PCB

Quantity

Reference Designator

Part Number

Description

1

117611-1

PCB, evaluation board

2

J1 to J2

104935

2.92 mm connectors, SRI

1

J3

105192

SMA connector, Johnson

1

U1

HMC787ALCB

Device under test (DUT)