ADL5592

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CONFIGURATION OPTIONS

Table 6. Evaluation Board Configuration Options

Component

Designator

Component Name

Description

Default

Conditions

TP1A, TP2A

Supply and ground vector pins

Not applicable

L1A, L2A, C4A to

C11A, R4A, R5A

Power supply decoupling

The nominal power supply decoupling is accomplished by using

a 100 pF (C4A, C6A, and C10A) in addition to either a 0.1 μF (C5A

and C7A) or a 10 μF (C11A) capacitor at each power supply pin. A

series inductor, L2A, is used to bias the open collector at Pin 21. To

tune the ADL5592 for the low bands (450 MHz, 850 MHz, and 900

MHz), the value should be 270 nH. For the high bands (1800 MHz

and 1900 MHz), the inductor should be changed to 33 nH.

L2A = 270 nH or

33 nH (Size 0603)

(Coilcraft 0603CS);

C4A, C6A, C10A =

100 pF (Size 0402);

C5A, C7A = 0.1 μF

(Size 0402); C11A =

10 μF (Size 0402);

R4A, R5A = 0 Ω

(Size 0402); C8A,

C9A = open (Size

0402)

C14A, C17A

Input and output interfaces

C14A and C17A are dc blocks. The SMA labeled IN_ATTA is used to

drive the RF input. The SMA labeled RF_OUTA corresponds to the RF

output.

C14A, C17A =

1000 pF (Size 0402)

C1A to C3A

Mixer input and output interfaces

C1A to C3A are dc blocks. The SMA labeled LOPA drives the

balanced differential mixer input with a single-ended LO source.

The unused differential input is ac-coupled to ground. The SMA

labeled MX_OUTA corresponds to the mixer output. To use this

function, the loopback mode must be enabled.

C1A = 1000 pF (Size

0402); C2A, C3A =

0.1 μF (Size 0402)

SW1A, SW2A,

R8A, R12A

Loopback enable interface

Normal transmit mode is exercised by applying a logic high voltage

to the LOOP EN pin, setting Switch SW1A to the position opposite

Label O. For loopback mode, a logic low voltage must be applied to

the LOOP EN pin by setting both Switch SW1A and Switch SW2A to

the positions closest to the O labels. To exercise the control function

from an external source, Switch SW1A must be set to the position

closest to the O label and Switch SW2A must be set to the opposite

position. The signal is driven from the LBENBA SMA.

SW1A, SW2A =

installed; R8A = 0 Ω

(Size 0402); R12A =

10 kΩ (Size 0402)

R1A to R3A, R9A

to R11A

Serial control interface

The evaluation board can be controlled using most PCs. Windows®-

based control software is shipped with the evaluation kit. A 25-pin

D-subadapter and cable are required to connect the PC to the SPI

port test points on the evaluation board. In some cases, the quality

of the PC port signals can be improved by adding capacitance to

R1A to R3A. The addition of 50 Ω values for R1A to R3A allow for SPI

port control from digital generators driven from the SMAs

connectors, SPI_DATA-A, SPI_CLK-A, and SPI_SEL-A.

R1A, R2A, R3A =

open (Size 0402);

R9A, R10A, R11A =

0 Ω (Size 0402)