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ADRF5720BCCZN-R7

0.5DB LSB,6-BIT,SILICON DIGITAL

Part Number: ADRF5720BCCZN-R7

Manufacturer: Analog Devices Inc.

Category: Attenuators

Package: 24-VFLGA Exposed Pad

Datasheet:: ADRF5720BCCZN-R7.pdf

Description: 0.5DB LSB,6-BIT,SILICON DIGITAL

Select Quantity Stock: 2,684

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

ADRF5720BCCZN-R7 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator, 9 kHz to 40 GHz

A comprehensive technical overview of the ADRF5720BCCZN-R7, an ultrawideband 6-bit silicon digital attenuator from Analog Devices featuring a 9 kHz to 40 GHz frequency range, 31.5 dB attenuation control range in 0.5 dB steps, low insertion loss of 2.0 dB up to 18 GHz and 4.5 dB up to 40 GHz, high RF input power handling of 27 dBm average and 30 dBm peak, SPI and parallel mode control, and a 24-terminal 4 mm × 4 mm LGA package. Covers device function, core features, electrical specifications, pin configuration, typical applications, and replacement selection guidance.

Analog Devices 24-Terminal LGA (4mm × 4mm) 9 kHz to 40 GHz

Device Classification 6-Bit Silicon Digital Attenuator

Part Number: ADRF5720BCCZN-R7

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +105°C

PRODUCT OVERVIEW

What Is the ADRF5720BCCZN-R7?

ADRF5720BCCZN-R7 is an ultrawideband, high-precision 6-bit silicon digital attenuator from Analog Devices that operates from 9 kHz to 40 GHz with a 31.5 dB attenuation control range in 0.5 dB steps. The device provides better than 4.5 dB of insertion loss and excellent attenuation accuracy, making it ideal for demanding RF and microwave applications.

The ADRF5720 handles a maximum input power of 27 dBm average and 30 dBm peak for all states, with high input linearity (P0.1dB of 30 dBm in insertion loss state, 27 dBm in other attenuation states; IP3 of 50 dBm typical). The ATTIN and ATTOUT ports are internally matched to 50 Ω and DC-coupled to 0 V, eliminating the need for DC blocking capacitors when the RF line potential is equal to 0 V DC.

The device requires a dual supply voltage of +3.3 V and −3.3 V and features serial peripheral interface (SPI), parallel mode control, and CMOS/LVTTL-compatible controls. The ADRF5720 is pin-compatible with the ADRF5730, the fast switching version, which operates from 100 MHz to 40 GHz. The device is available in a 24-terminal, 4 mm × 4 mm, RoHS-compliant land grid array (LGA) package and operates from –40°C to +105°C.

Ultrawideband 9 kHz to 40 GHz 31.5 dB attenuation control range in 0.5 dB steps with low insertion loss of 2.0 dB up to 18 GHz and 4.5 dB up to 40 GHz.

High RF Power Handling 27 dBm average and 30 dBm peak input power handling for all states, with high input linearity (IP3 of 50 dBm typical).

SPI and Parallel Control CMOS/LVTTL-compatible serial and parallel control interfaces with RF amplitude settling time of 8 µs and no low frequency spurious signals.

DEVICE HIGHLIGHTS

Key Features and Benefits of ADRF5720BCCZN-R7

Ultrawideband Frequency Range (9 kHz to 40 GHz)

Operates from 9 kHz to 40 GHz, covering a broad spectrum of RF and microwave applications including 5G millimeter wave, military radios, radars, and VSATs.

6-Bit Attenuation Control (0.5 dB Steps)

31.5 dB attenuation control range in 0.5 dB steps with excellent attenuation accuracy: ±(0.20 + 1.0% of attenuation state) up to 18 GHz, ±(0.20 + 1.5%) up to 26 GHz, ±(0.40 + 3.0%) up to 40 GHz.

High Input Power Handling

ATTIN port handles 27 dBm average and 30 dBm peak RF input power for all states, with P0.1dB of 30 dBm (insertion loss state) and 27 dBm (other attenuation states).

SPI and Parallel Mode Control

Features serial peripheral interface (SPI), parallel mode control, and CMOS/LVTTL-compatible controls for flexible system integration.

Fast RF Settling Time (8 µs)

RF amplitude settling time of 8 µs to 0.1 dB of final RF output, enabling rapid attenuation switching in time-critical applications.

Compact 24-Terminal LGA Package

24-terminal, 4 mm × 4 mm land grid array (LGA) package with exposed pad, RoHS compliant and pin-compatible with the ADRF5730 fast switching version.

REFERENCE DATA

Technical Specifications for ADRF5720BCCZN-R7

Part Number	ADRF5720BCCZN-R7	Manufacturer	Analog Devices
Device Type	6-Bit Silicon Digital Attenuator	Attenuation Range	31.5 dB in 0.5 dB Steps
Frequency Range	9 kHz to 40 GHz	Insertion Loss	2.0 dB (up to 18 GHz), 2.8 dB (up to 26 GHz), 4.5 dB (up to 40 GHz)
Attenuation Accuracy	±(0.20 + 1.0%) up to 18 GHz; ±(0.20 + 1.5%) up to 26 GHz; ±(0.40 + 3.0%) up to 40 GHz	Step Error (Typical)	±0.25 dB up to 26 GHz; ±0.65 dB up to 40 GHz
P0.1dB (Insertion Loss State)	30 dBm	P0.1dB (Other Attenuation States)	27 dBm
IP3 (Typical)	50 dBm	RF Input Power Handling	27 dBm Average, 30 dBm Peak (All States)
Supply Voltage (V_DD)	+3.3 V	Supply Voltage (V_SS)	−3.3 V
Control Interface	SPI, Parallel Mode, CMOS/LVTTL Compatible	RF Settling Time (0.1 dB)	8 µs
Impedance	50 Ω (Internal Match)	DC Coupling	ATTIN and ATTOUT DC-Coupled to 0 V
Package / Case	24-Terminal LGA (4 mm × 4 mm × 0.75 mm)	Supplier Device Package	LGA-24 (CC-24-5)
Exposed Pad	2.4 mm EP (Must Be Connected to RF and DC Ground)	Pin Count	24 (Plus Exposed Pad)
Mounting Type	Surface Mount	Operating Temperature	-40°C to +105°C
ESD Rating (HBM)	Class 1B (1000 V)	RoHS	ROHS3 Compliant
REACH Status	REACH Unaffected	MSL Level	MSL 3 (168 Hours)
ECCN	EAR99	HTSUS	8542.39.0070
Product Status	Active	Packaging	Tape & Reel (500 per Reel)
Pin-Compatible With	ADRF5730 (Fast Switching Version, 100 MHz to 40 GHz)	Evaluation Board	ADRF5720-EVALZ

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for ADRF5720BCCZN-R7

Control Interface & Attenuation Programming

The ADRF5720BCCZN-R7 offers flexible control interface and attenuation programming:

Parallel Mode (PS = Low): The six attenuation bits are controlled directly by pins D0 (0.5 dB), D1 (1 dB), D2 (2 dB), D3 (4 dB), D4 (8 dB), and D5 (16 dB). Latch Enable (LE) latches the parallel data.
Serial Mode (PS = High): The SPI interface uses SERIN (serial data input), CLK (serial clock), and LE (latch enable) to shift in the 6-bit attenuation word. SEROUT provides serial data output for daisy-chain operation.
Control Pin Compatibility: All digital inputs (LE, PS, D3/SEROUT, D4/SERIN, D5/CLK) are CMOS/LVTTL compatible. D0, D1, and D2 have internal 100 kΩ pull-up resistors.
Attenuation Word: The 6-bit binary word sets attenuation from 0 dB (000000) to 31.5 dB (111111) in 0.5 dB steps.

PCB and System-Level Guidance

Attenuator performance depends on layout and component selection:

Power Supply Decoupling: Place low-ESR decoupling capacitors close to the VDD and VSS pins for stable dual-supply operation (+3.3 V and −3.3 V).
RF Ports (ATTIN and ATTOUT): Both ports are internally DC-coupled to 0 V and AC-matched to 50 Ω. No DC blocking capacitors are necessary when the RF line potential is equal to 0 V DC.
Exposed Pad: The exposed pad (EP) must be connected to the RF and DC ground of the PCB for optimal performance and thermal dissipation.
Impedance Matching: For wideband applications, impedance matching on the RF transmission lines can further optimize high frequency insertion loss, return loss, and attenuation accuracy characteristics. Optimal footprint and land pattern design improves attenuation accuracy above 35 GHz.
Ground Vias: Use multiple ground vias near the GND pins and exposed pad to minimize parasitic inductance and ensure a low-impedance ground return path.
Verify the recommended PCB footprint from the official datasheet prior to production.

24-TERMINAL LGA (4 mm × 4 mm)

Pin Configuration Reference for ADRF5720BCCZN-R7

ADRF5720

LGA TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The LGA package has 24 terminals with a 4 mm × 4 mm body size and 0.75 mm package height. The exposed pad (2.4 mm) must be connected to the RF and DC ground of the PCB.

1 LE Latch Enable Input - Latches Parallel Data or Serial Data

2 PS Parallel/Serial Control Interface Selection - Low = Parallel, High = Serial

3 GND Ground - Connect to RF and DC Ground

4 GND Ground - Connect to RF and DC Ground

5 ATTIN Attenuator Input - DC-Coupled to 0 V, AC-Matched to 50 Ω

6 GND Ground - Connect to RF and DC Ground

7 GND Ground - Connect to RF and DC Ground

8 GND Ground - Connect to RF and DC Ground

9 GND Ground - Connect to RF and DC Ground

10 GND Ground - Connect to RF and DC Ground

11 GND Ground - Connect to RF and DC Ground

12 GND Ground - Connect to RF and DC Ground

13 GND Ground - Connect to RF and DC Ground

14 ATTOUT Attenuator Output - DC-Coupled to 0 V, AC-Matched to 50 Ω

15 GND Ground - Connect to RF and DC Ground

16 GND Ground - Connect to RF and DC Ground

17 V_SS Negative Supply Input - −3.3 V

18 V_DD Positive Supply Input - +3.3 V

19 D0 Parallel Control Input - 0.5 dB Attenuator Bit (Internal 100 kΩ Pull-Up)

20 D1 Parallel Control Input - 1 dB Attenuator Bit (Internal 100 kΩ Pull-Up)

21 D2 Parallel Control Input - 2 dB Attenuator Bit (Internal 100 kΩ Pull-Up)

22 D3/SEROUT Parallel Control Input - 4 dB Bit / Serial Data Output (SEROUT)

23 D4/SERIN Parallel Control Input - 8 dB Bit / Serial Data Input (SERIN)

24 D5/CLK Parallel Control Input - 16 dB Bit / Serial Clock Input (CLK)

EP EPAD Exposed Pad - Must Be Connected to RF and DC Ground of PCB

APPLICATION AREAS

Typical Applications for ADRF5720BCCZN-R7

Test and Instrumentation

Ultrawideband 9 kHz to 40 GHz frequency range and high attenuation accuracy make this attenuator ideal for precision test and measurement equipment.

Cellular Infrastructure: 5G Millimeter Wave

Supports 5G millimeter wave infrastructure with high linearity (IP3 of 50 dBm typical) and low insertion loss across the wide frequency range.

Military Radios, Radars, ECMs

High RF input power handling (27 dBm average, 30 dBm peak) and robust ESD protection suit military radios, radars, and electronic counter measures.

Microwave Radios and VSATs

Low insertion loss and tight distribution in relative phase enable precise signal level control in microwave radios and very small aperture terminals.

Industrial Scanners

Wide frequency range and fast RF settling time (8 µs) support industrial scanning and imaging applications.

Wideband RF Signal Chains

Pin-compatible with the ADRF5730 fast switching version for design flexibility, and suitable for wideband RF signal chain applications requiring precise attenuation control.

REPLACEMENT GUIDANCE

Selecting an Alternative for ADRF5720BCCZN-R7

A replacement for the ADRF5720BCCZN-R7 should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Analog Devices product pages and datasheets.

Type: 6-Bit Silicon Digital Attenuator

Frequency range: 9 kHz–40 GHz

Attenuation range: 0.5–31.5 dB

Step size: 0.5 dB

Insertion loss: 4.5 dB up to 40 GHz

Package: 24-Terminal LGA

Temperature range: –40°C to 105°C

SPI and parallel control

Pin-compatible and functionally compatible alternatives (same family):

Part Number	Frequency Range	Package	Key Difference
ADRF5720BCCZN-R7	9 kHz to 40 GHz	24-LGA (4 mm × 4 mm)	-
ADRF5730BCCZN-R7	100 MHz to 40 GHz	24-LGA (4 mm × 4 mm)	Pin-Compatible, Fast Switching Version
ADRF5721BCCZN-R7	9 kHz to 40 GHz	24-LGA (4 mm × 4 mm)	Different Attenuation Range / Feature Set

All alternative part numbers listed above are documented in the official Analog Devices product pages and datasheets. The ADRF5720BCCZN-R7 is the standard switching version in a 24-terminal LGA package with tape-and-reel packaging (500 units per reel). For the fast switching version that is pin-compatible and operates from 100 MHz to 40 GHz, consider ADRF5730BCCZN-R7. For a different attenuation range or feature set, consider ADRF5721BCCZN-R7. Select based on switching speed, frequency range, and application requirements.

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MANUFACTURER INFORMATION

Analog Devices

The ADRF5720 (ADRF5720BCCZN-R7) belongs to the family of ultrawideband silicon digital attenuators from Analog Devices. The device is a 6-bit digital attenuator with a 31.5 dB attenuation control range in 0.5 dB steps, operating from 9 kHz to 40 GHz. The ADRF5720 features low insertion loss, excellent attenuation accuracy, high input linearity, and high RF input power handling. The device requires a dual supply voltage of +3.3 V and −3.3 V and supports SPI and parallel mode control with CMOS/LVTTL-compatible interfaces. The ADRF5720 is pin-compatible with the ADRF5730 fast switching version and is available in a 24-terminal, 4 mm × 4 mm, RoHS-compliant LGA package operating from −40°C to +105°C. The device is recommended for new designs in test and instrumentation, 5G millimeter wave infrastructure, military radios, radars, ECMs, microwave radios, and VSAT applications.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: ADRF5720BCCZN-R7

Manufacturer: Analog Devices Inc.

Package: 24-VFLGA Exposed Pad

Package/Case: 24-VFLGA Exposed Pad

Series: ADRF5720

Packaging: Tape & Reel (TR) Cut Tape (CT) Digi-Reel®

Product Status: Active

Attenuation Value: 0.5dB ~ 31.5dB

Frequency Range: 9 kHz ~ 40 GHz

Power (Watts): 500mW

Impedance: 50 Ohms

Grade: -

Qualification: -

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Part Number: ADRF5720BCCZN-R7

Manufacturer: Analog Devices Inc.

Package: 24-VFLGA Exposed Pad

Category: Attenuators

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