0.5 dB LSB, 6-Bit, Silicon Digital

Attenuator, 100 MHz to 40 GHz

Data Sheet

ADRF5730

Rev. 0

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

©2018 Analog Devices, Inc. All rights reserved.

Technical Support

www.analog.com

FEATURES

Ultrawideband frequency range: 100 MHz to 40 GHz

Attenuation range: 0.5 dB steps to 31.5 dB

Low insertion loss with impedance match

2.1 dB up to 18 GHz

2.9 dB up to 26 GHz

4.8 dB up to 40 GHz

Attenuation accuracy with impedance match

±(0.10 + 1.0% of attenuation state) up to 18 GHz

±(0.15 + 0.8% of attenuation state) up to 26 GHz

±(0.35 + 2.5% of attenuation state) up to 40 GHz

Typical step error with impedance match

±0.18 dB up to 18 GHz

±0.23 dB up to 26 GHz

±0.51 dB up to 40 GHz

High input linearity

P0.1dB insertion loss state: 30 dBm

P0.1dB other attenuation states: 27 dBm

IP3: 50 dBm typical

High RF input power handling: 27 dBm average, 30 dBm peak

Tight distribution in relative phase

No low frequency spurious signals

SPI and parallel mode control, CMOS/LVTTL compatible

RF settling time (0.1 dB of final RF output): 250 ns

24-terminal, 4 mm × 4 mm LGA package

Pin compatible with ADRF5720, low frequency cutoff version

APPLICATIONS

Industrial scanners

Test and instrumentation

Cellular infrastructure: 5G millimeter wave

Military radios, radars, electronic counter measures (ECMs)

Microwave radios and very small aperture terminals (VSATs)

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

GENERAL DESCRIPTION

The ADRF5730 is a silicon, 6-bit digital attenuator with 31.5 dB

attenuation control range in 0.5 dB steps.

This device operates from 100 MHz to 40 GHz with better than

4.8 dB of insertion loss and excellent attenuation accuracy. The

ADRF5730 has a radio frequency (RF) input power handling

capability of 27 dBm average and 30 dBm peak for all states.

The ADRF5730 requires a dual supply voltage of +3.3 V and

−3.3 V. The device features serial peripheral interface (SPI), parallel

mode control, and complementary metal-oxide semiconductor

(CMOS)-/low voltage transistor to transistor logic (LVTTL)-

compatible controls.

The ADRF5730 is pin-compatible with the ADRF5720 low

frequency cutoff version, which operates from 9 kHz to 40 GHz.

The ADRF5730 RF ports are designed to match a characteristic

impedance of 50 Ω. For wideband applications, impedance

matching on the RF transmission lines can further optimize high

frequency insertion loss, return loss, and attenuation accuracy

characteristics. Refer to the Electrical Specifications section, the

Typical Performance Characteristics section, and the Applications

Information section for more details.

The ADRF5730 comes in a 24-terminal, 4 mm × 4 mm, RoHS-

compliant, land grid array (LGA) package and operates from

−40°C to +105°C.

PS

LE

GND

GND

ATTIN

GND

VSS

VDD

GND

GND

ATTOUT

PACKAGE

BASE

GND

GND

10

18

13

17

16

15

14

11

12

7

8

9

21

20

19

24

23

22

1

6

2

3

4

5

6-BIT DIGITAL

ATTENUATOR

SERIAL/

PARALLEL

INTERFACE