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ADL5390ACPZ-WP

RF/IF Vector Multiplier

Analog Devices 

ADL5390

REF –26.6dBm

*ATT 5dB

*RBW 10kHz

*VBW 300kHz

*SWT 4s

–30

POS –26.623dBm

A

–40

–50

1 RM * –60

AVG

–70

–80

–90

–100

NOR

–110

–120

CENTER 880MHz

1.29MHz/

SPAN 12.9MHz

STANDARD: CDMA IS95C CLASS 0 FWD

Tx CHANNELS

CH1 (REF)

CH2

CH3

–22.93dBm

–22.83dBm

–22.95dBm

TOTAL

–18.13dBm

ADJACENT CHANNEL

LOWER –59.25dB

UPPER –59.43dB

ALTERNATE CHANNEL

LOWER –62.79dB

UPPER –63.11dB

2ND ALTERNATE CHANNEL

LOWER –60.71dB

UPPER –60.32dB

Figure 41. ADL5390 as a Quadrature Modulator with the Use of an External

90° Phase Splitter, RF/LO Power = −1 dBm and Gain Control Inputs Driven

Differentially with 0.353 VP-P, 3-Carrier CDMA2000 I/Q Data

–69

NOISE (dBc) - 8MHz OFFSET - 1MHz RBW

–70

–71

–72

–73

–74

–75

–76

–77

–78

–25

–20

–15

–10

–5

0

OUTPUT POWER (dBm)

Figure 42. Noise vs. Output Power

RF MULTIPLEXER

The ADL5390 may also be used as an RF multiplexer. In this

application, two RF signals are applied to the INPI and INPQ

inputs, and the baseband voltages control which of the two RF

signals appears at the output. Figure 43 illustrates this applica-

tion and shows that with VIBB = 0.5 and VQBB = 0.0 (with refer-

ence to a common-mode voltage of 0.5 V). The INPI signal is

presented to the output. Then, when VIBB transitions to VIBB =

0.0 and VQBB remains equal to zero, there is no RF output.

Lastly, as VQBB transitions to 0.5 V, the INPQ signal appears at

the output. With VIBB = 0.0 and VQBB = 0.0, the isolation to the

output is typically >40 dB at 380 MHz.

TEK STOPPED 200 Acqs

24 AUG 04 11:08:40

CH2

2

CH3

CH1

3

1

VIBB

VQBB

RF OUTPUT

CH1 200mV Ω CH2 500mV Ω DS M 40.0ns 1.25GS/s 800ps/pt

CH3 500mV Ω DS

A CH2 780mV

Figure 43. ADL5390 in RF Multiplexer Application

Rev. 0 | Page 18 of 24

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