ADRF5721

RECOMMENDED FOR NEW DESIGNS

ADRF5721

2 dB LSB, 4-Bit, Silicon Digital Attenuator, 9 kHz to 40 GHz

RECOMMENDED FOR NEW DESIGNS

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1ku List Price Starting From $85.17

Features

Ultrawideband frequency range: 9 kHz to 40 GHz
Attenuation range: 2 dB steps to 30 dB
Low insertion loss
- 1.6 dB to 18 GHz
- 2.0 dB to 26 GHz
- 3.4 dB to 40 GHz
Attenuation accuracy
- ±(0.1 + 1.0%) of attenuation state up to 18 GHz
- ±(0.1 + 2.5%) of attenuation state up to 26 GHz
- ±(0.6 + 10.0%) of attenuation state up to 40 GHz
Typical step error
- ±0.15 dB to 18 GHz
- ±0.20 dB to 26 GHz
- ±0.60 dB to 40 GHz

High input linearity
- P0.1dB insertion loss state: 30 dBm
- P0.1dB other attenuation states: 26 dBm
- IP3: 50 dBm typical
High RF input power handling: 26 dBm average, 30 dBm peak
Tight distribution in relative phase
No low frequency switching spurs
SPI and parallel mode control, CMOS/LVTTL compatible
RF amplitude settling time (0.1 dB of final RF output): 8.5 μs
2.5 mm × 2.5 mm, 16-terminal LGA package
Pin compatible with ADRF5731, fast switching version

Additional Details

The ADRF5721 is a silicon, 4-bit digital attenuator with a 30 dB attenuation control range in 2 dB steps.

This device operates from 9 kHz to 40 GHz with better than 3.4 dB of insertion loss. The ATTIN port of the ADRF5721 has a radio frequency (RF) input power handling capability of 26 dBm average and 30 dBm peak for all states.

The ADRF5721 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 ADRF5721 is pin compatible with the ADRF5731, the fast switching version, which operates from 100 MHz to 40 GHz.

The ADRF5721 RF ports are designed to match a characteristic impedance of 50 Ω.

The ADRF5721 comes in a 16-terminal, 2.5 mm × 2.5 mm, RoHS compliant, land grid array (LGA) package and operates from −40°C to +105°C.

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)

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $85.17

Technical Documents 1

ADRF5721: 2 dB LSB, 4-Bit, Silicon Digital Attenuator, 9 kHz to 40 GHz Data Sheet (Rev.A) 05/24/2018

Reference Materials 1

RF, Microwave, and Millimeter Wave Product Selection Guide 07/13/2018

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADRF5721BCCZN	16-Lead LGA (2.5mm x 2.5mm x 0.75mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
ADRF5721BCCZN-R7	16-Lead LGA (2.5mm x 2.5mm x 0.75mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

ADRF5721BCCZN
Pin/Package Drawing
16-Lead LGA (2.5mm x 2.5mm x 0.75mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

ADRF5721BCCZN-R7
Pin/Package Drawing
16-Lead LGA (2.5mm x 2.5mm x 0.75mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

Alternative Parts 3

Parts	Product Life Cycle	Description
ADRF5731	RECOMMENDED FOR NEW DESIGNS	2 dB LSB, 4-Bit, Silicon Digital Attenuator, 100 MHz to 40 GHz
ADRF5720	RECOMMENDED FOR NEW DESIGNS	0.5 dB LSB, 6-Bit, Silicon Digital Attenuator, 9 kHz to 40 GHz
ADRF5730	RECOMMENDED FOR NEW DESIGNS	0.5 dB LSB, 6-Bit, Silicon Digital Attenuator, 100 MHz to 40 GHz

EVAL-ADRF5721

ADRF5721 Evaluation Board

Download

EVAL-ADRF5721

ADRF5721 Evaluation Board

Buy Now View Details

Product Detail

The ADRF5721-EVALZ is a 4-layer evaluation board. The top and bottom copper layers are 2.2 mil (1.5oz) and are separated by dielectric materials.

All RF and dc traces are routed on the top copper layer whereas the inner and bottom layers are grounded planes that provide a solid ground for the RF transmission lines. Top dielectric material is 12 mil Rogers RO4003, offering optimal high frequency performance. The middle and bottom dielectric materials provide mechanical strength. The overall board thickness is 62 mil, which allows 2.4 mm RF launchers to be connected at the board edges.

Resources

ZIP

ADRF5721/ADRF5731 Gerber Files

325.24 K

EVAL-ADRF5721

ADRF5721 Evaluation Board

S-Parameter 1

Simulation Model

S-Parameter

ADRF5721 S-Parameters

310.68 KB

IBIS Model 1

Simulation Model

IBIS Model

ADRF5720/ADRF5721ADRF5730/ADRF5731 IBIS Model

97.27 KB

ADIsimRF

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