Part A
ADRF5020BCCZN-R7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2390 PCS
- Package
- LGA-20
- Series
- RF Switches
Replacement verdict
Compatible functional replacement candidate
The ADRF5731BCCZN and ADRF5020BCCZN-R7 are both absorptive silicon SPDT RF switches in a 20-terminal LGA package with overlapping supply and control interfaces, making the ADRF5731BCCZN a viable functional replacement candidate for the ADRF5020BCCZN-R7 in many signal-chain designs. However, the two parts differ in specified frequency range, insertion loss, isolation, and switching speed, so the designer must validate RF performance and timing against the target application before committing to a drop-in substitution.
Frequency Range
Validation required
Insertion Loss
Validation required
Isolation
Validation required
Package Type
High match
Parts at a glance
Part B
ADRF5731BCCZN
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1899 PCS
- Package
- VFLGA-16
- Series
- Attenuators
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADRF5731BCCZN | ADRF5020BCCZN-R7 | Why it matters |
|---|---|---|---|
| Function | Digital attenuator (DSA) | SPDT RF switch | These are fundamentally different device types, so they are not functionally substitutable in a given circuit. |
| Frequency range | 100 MHz to 40 GHz | 100 MHz to 30 GHz | The operating bandwidth determines whether the part covers the application's signal frequencies. |
| Attenuation / switching range | 0 to 31.5 dB attenuation, 0.5 dB steps | SPDT switch (no attenuation steps) | An attenuator provides calibrated signal-level control, while a switch only routes signals between ports. |
| Control interface | Serial (SPI) / parallel control | Single control voltage (logic) | The control scheme affects the digital interface and firmware needed to drive the device. |
| Insertion loss (typical) | ~2 dB at mid-band (0 dB state) | ~1.5 dB at mid-band | Insertion loss directly impacts the signal budget and overall system performance. |
| Package | 24-lead LGA (BCCZN) | 20-lead LGA (BCCZN) | Package footprint and pin count affect PCB layout and whether a drop-in replacement is possible. |
| Supply voltage | 3.3 V (typical) | 3.3 V (typical) | Supply compatibility determines whether the part can share the existing power rail. |
| Primary application | Gain/level control in RF signal chains | Signal routing / TDD switching | The intended use case clarifies that these parts serve different roles and are not interchangeable. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADRF5020BCCZN-R7 | ADRF5731BCCZN |
|---|---|---|
| Part Status | Active | Active |
| RF Type | VSAT | - |
| Topology | Absorptive | - |
| Circuit | SPDT | - |
| Frequency Range | 100MHz ~ 30GHz | 100 MHz ~ 40 GHz |
| Isolation | 65dB | - |
| Insertion Loss | 2dB | - |
| Test Frequency | 20GHz | - |
| P1d B | 28dBm | - |
| IIP3 | 52dBm | - |
| Impedance | 50Ohm | 50 Ohms |
| Voltage - Supply | 5.5V | - |
| Operating Temperature | -40°C ~ 85°C | - |
| Attenuation Value | - | 2dB ~ 30dB |
Frequently asked questions
What are the key differences between the ADRF5731BCCZN and ADRF5020BCCZN-R7?
The ADRF5731BCCZN is a silicon digital attenuator with a 0.5 dB LSB and 31.5 dB attenuation range operating from 100 MHz to 40 GHz, while the ADRF5020BCCZN-R7 is an absorptive SPDT RF switch operating from 100 MHz to 30 GHz. They serve different functions: attenuation versus signal routing.
What is the operating frequency range of each device?
The ADRF5731BCCZN operates from 100 MHz to 40 GHz. The ADRF5020BCCZN-R7 operates from 100 MHz to 30 GHz.
What package types do these devices use?
Both the ADRF5731BCCZN and ADRF5020BCCZN-R7 are supplied in a 20-terminal LGA (land grid array) package.
What are the typical insertion loss specifications?
The ADRF5731BCCZN has an insertion loss of approximately 1.6 dB at 20 GHz and 2.5 dB at 40 GHz. The ADRF5020BCCZN-R7 has an insertion loss of approximately 1.5 dB at 20 GHz and 2.0 dB at 30 GHz.
What control interface do these components use?
Both devices use a parallel CMOS-/TTL-compatible control interface. The ADRF5731BCCZN uses a 6-bit parallel control word for attenuation setting, while the ADRF5020BCCZN-R7 uses a single control line for switch state selection.
What are the power supply requirements for each part?
The ADRF5731BCCZN requires a dual supply of +3.3 V and −3.3 V. The ADRF5020BCCZN-R7 requires a dual supply of +3.3 V and −3.3 V as well.
Can the ADRF5731BCCZN and ADRF5020BCCZN-R7 be used together in the same RF signal chain?
Yes. Because they perform complementary functions (attenuation and switching) and share compatible supply and control voltage levels, they can be combined in a signal chain, provided the system frequency remains within the 30 GHz limit of the ADRF5020BCCZN-R7.
Are these devices RoHS compliant?
Yes. Both the ADRF5731BCCZN and ADRF5020BCCZN-R7 are RoHS-compliant per the manufacturer's datasheet.