HMC815BLC5TR-R5 datasheet(27/30 Pages) AD

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Data Sheet

HMC815B

Rev. 0 | Page 27 of 30

APPLICATIONS INFORMATION

TYPICAL APPLICATION CIRCUIT

Figure 104 shows the typical application circuit for the

HMC815B. To select the appropriate sideband, an external 90°

hybrid is required. For applications not requiring operation to

dc, use an off chip, dc blocking capacitor. For applications that

require the LO signal at the output to be suppressed, use a bias

tee or RF feed. Ensure that the source or sink current used for

LO suppression is <3 mA for each IF port to prevent damage to

the device. The common-mode voltage for each IF port is 0 V.

To select the upper sideband, connect the IF1 pin to the 90°

port of the hybrid and the IF2 pin to the 0° port of the hybrid.

To select the lower sideband, connect the IF1 pin to the 0° port

of the hybrid and the IF2 pin to the 90° port of the hybrid.

×2

IF1 J3

IF IN

LOIN

RFOUT

90° HYBRID

COUPLER

IF2 J4

PACKAGE

BASE

GND

VDD1

2.2µF

1000pF

100pF

VDD2

J11

C11

2.2µF

1000pF

100pF

VDD3

J10

C10

2.2µF

1000pF

100pF

VGG

2.2µF

1000pF

HMC815B

Figure 104. Typical Application Circuit

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