HMC521ALC4TR-R5 datasheet(22/24 Pages) AD

22 / 24 page

HMC521ALC4

Data Sheet

Rev. 0 | Page 22 of 24

APPLICATIONS INFORMATION

TYPICAL APPLICATION CIRCUIT

Figure 86 shows the typical application circuit for the

HMC521ALC4. The HMC521ALC4 is a passive device and

does not require any external components. The LO and RF pins

are internally ac-coupled. The IFx pins are internally dc-coupled.

For applications not requiring operation to dc, dc block this

port externally using a series capacitor of a value chosen to pass

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

required, do not exceed the IFx source and sink current rating

specified in the Absolute Maximum Ratings section. To select

the upper sideband when using the HMC521ALC4 as an

upconverter, connect the IF1 pin to the 90° port of the hybrid,

and connect 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. The input

is from the sum port of the hybrid, and the difference port is

50 Ω terminated.

To select the upper sideband (low-side LO) when using as

downconverter, connect the IF1 pin to the 0° port of the hybrid,

and connect the IF2 pin to the 90° port of the hybrid. To select

the lower sideband (high-side LO), connect the IF1 pin to the

90° port of the hybrid and connect the IF2 pin to the 0° port of

the hybrid. The output is from the sum port of the hybrid, and

the difference port is 50 Ω terminated.

PACKAGE

BASE

IF1

IF2

90°

HYBRID

50Ω

SUPPLY

FOR IF1

SUPPLY

FOR IF2

BIAS TEE/

DC FEED FOR IF2

BIAS TEE/

DC FEED FOR IF1

DC BLOCKING

CAPACITORS

EXTERNAL

90° HYBRID

NOTES

1. DASHED SECTIONS ARE OPTIONAL AND MEANT FOR LO NULLING.

Figure 86. Typical Application Circuit

HMC521ALC4TR-R5 Datasheet(PDF) 22 Page - Analog Devices

HMC521ALC4TR-R5 Datasheet(HTML) 22 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL