ADL5802ACPZ-R7 datasheet(25/32 Pages) AD

25 / 32 page

ADL5802

Rev. 0 | Page 25 of 32

APPLICATIONS INFORMATION

BASIC CONNECTIONS

The ADL5802 features dual channel mixers with a common

local oscillator (LO). The mixer is designed to translate between

radio frequencies (RF) and intermediate frequencies (IF). For

both upconversion and downconversion applications, RF1+

(Pin 23), RF1− (Pin 22), RF2+ (Pin 20), and RF2− (Pin 19)

must be configured as the input interfaces. OP1+ (Pin 3), OP1−

(Pin 4), OP2+ (Pin 16), and OP2− (Pin 15) must be configured

as the output interfaces. Figure 68 illustrates the basic connections

for ADL5802 operation.

RF AND LO PORTS

The RF and LO input ports are designed for differential input

impedance of approximately 50 Ω. Figure 69 and Figure 70

illustrate the RF and LO interfaces, respectively. It is recommended

that each of the RF and LO differential ports be driven through a

balun for optimum performance. It is also necessary to ac-

couple both RF and LO ports with the proper size capacitors.

Table 4 lists the recommended components for various RF

frequency bands. The characterization data is available in the

Typical Performance Characteristics section.

GND

ENBL

LOIP LOIN

VPOS

OP2+

RF1–

GND

RF1+

VPOS

OP1+

OP1–

GND

VPOS

ADL5802

GND

RF2–

GND

GND VSET

GND

RF2+

OP2–

C13

C14

C12

C15

C10

RF1

IF1P

C16

IF2P

RF2

VPOS

VSET

VPOS

C11

VPOS

Figure 68. Basic Connections Schematic

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