ADL5721

RECOMMENDED FOR NEW DESIGNS

5.9 GHz to 8.5 GHz, Low Noise Amplifier

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: price unavailable

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Overview

Frequency range: 5.9 GHz to 8.5 GHz
Typical gain of 25 dB
Low noise input
- Noise figure: <1.7 dB typical from 5.9 GHz to 8.5 GHz
High linearity input
- >4.0 dBm typical input third-order intercept (IIP3)
- >−10.6 dBm typical input 1 dB compression point (P1dB)
Matched 50 Ω single-ended input
Matched 100 Ω differential outputs
8-lead, 2.00 mm × 2.00 mm LFCSP microwave packaging

The ADL5721 is a narrow-band, high performance, low noise amplifier targeting microwave radio link receiver designs. The monolithic silicon germanium (SiGe) design is optimized for microwave radio link bands ranging from 5.9 GHz to 8.5 GHz. The unique design offers a single-ended 50 Ω input impedance and provides a 100 Ω balanced differential output that is ideal for driving Analog Devices, Inc., differential downconverters and radio frequency (RF) sampling analog-to-digital converters (ADCs). This low noise amplifier (LNA) provides noise figure performance that, in the past, required more expensive three-five (III-V) compounds process technology to achieve. This LNA uses a band switch feature to allow the input P1dB and noise figure to trade off for optimum system performance.

The ADL5721 and ADL5723 to ADL5726 family of narrow-band LNAs are each packaged in a tiny, thermally enhanced, 2.00 mm × 2.00 mm LFCSP package. The ADL5721 and ADL5723 to ADL5726 family operates over the temperature range of −40°C to +85°C.

Applications

Point to point microwave radios
Instrumentation
Satellite communications (SATCOM)
Phased arrays

Part Models: 2
1ku List Price: price unavailable

Documentation

Data Sheet 1

ADL5721: 5.9 GHz to 8.5 GHz, Low Noise Amplifier Data Sheet (Rev.0) 05/03/2016

Application Note 4

AN-1604: Thermal Management Calculations for RF Amplifiers in LFCSP and Flange Packages 08/01/2019

AN-2591: When It Comes to Long-Term Reliability of RF Amplifier ICs, Focus First on Die Junction Temperature 08/05/2024

AN-1363: Meeting Biasing Requirements of Externally Biased RF/Microwave Amplifiers with Active Bias Controllers 05/13/2020

AN-2622: Selecting an Analog Devices RF Low Noise Amplifier 09/04/2025

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
ADL5721ACPZN	8-Lead LFCSP (2mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADL5721ACPZN-R7	8-Lead LFCSP (2mm x 2mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 1, 2016 - 16_0035 Assembly Relocation of Select LFCSP, Mini-LFCSP and LFCSP Side Solderable Products to STATS ChipPAC China Jiangyin
		PCN16_0035_Form Material_Report Qualification Results Summary Qualification Results Summary Qualification Results Summary
ADL5721ACPZN-R7	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

S-Parameter 1

ADL5721 S-parameters

ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

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Sys-Parameter Models for Keysight Genesys

Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.

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