Part A
ADRF5021BCCZN
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3911 PCS
- Package
- LGA-20
- Series
- RF Switches
Replacement verdict
Compatible functional replacement candidate
The ADRF5020BCCZN-R7 and ADRF5021BCCZN are both absorptive SPDT RF switches from the same manufacturer family, sharing a common LGA-20 footprint and single-supply architecture, making them strong functional replacement candidates. However, the ADRF5021BCCZN offers a higher frequency operating range and a different control logic threshold, so designers must validate RF performance at the target frequency and confirm control voltage compatibility before substituting in existing designs.
Frequency Range
High match
Package Type
High match
Control Logic
Validation required
Insertion Loss
Validation required
Parts at a glance
Part B
ADRF5020BCCZN-R7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2390 PCS
- Package
- LGA-20
- Series
- RF Switches
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADRF5020BCCZN-R7 | ADRF5021BCCZN | Why it matters |
|---|---|---|---|
| Switch Configuration | SPDT | SPDT | Both are single-pole double-throw switches, so the basic signal routing function is the same. |
| Frequency Range | 100 MHz to 30 GHz | 9 kHz to 30 GHz | The ADRF5021 extends operation down to 9 kHz, enabling low-frequency and DC-adjacent applications the ADRF5020 cannot cover. |
| Insertion Loss (Typical) | 1.5 dB at 30 GHz | 1.3 dB at 30 GHz | Lower insertion loss directly improves signal chain budget and receiver sensitivity at high frequencies. |
| Isolation (Typical) | 60 dB at 30 GHz | 55 dB at 30 GHz | Higher isolation reduces leakage between ports, which is critical for switching accuracy and crosstalk in RF front ends. |
| Input P1dB (Typical) | 28 dBm | 27 dBm | Power handling determines the maximum linear signal level the switch can pass without compression. |
| Input IP3 (Typical) | 52 dBm | 50 dBm | Higher IP3 indicates better linearity, reducing intermodulation distortion in multi-carrier systems. |
| Control Voltage Logic | 0 V / 3.3 V (CMOS/TTL compatible) | 0 V / 3.3 V (CMOS/TTL compatible) | Compatible control logic allows direct interfacing with standard digital circuitry without level shifting. |
| Supply Voltage | 3.3 V | 3.3 V | Matching supply voltage simplifies power rail design and allows drop-in replacement in existing boards. |
| Package | 20-lead LGA (3 mm x 3 mm) | 20-lead LGA (3 mm x 3 mm) | Identical package and footprint enable direct PCB substitution without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature range ensures equivalent environmental robustness for industrial and commercial applications. |
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 | ADRF5021BCCZN | ADRF5020BCCZN-R7 |
|---|---|---|
| Part Status | Active | Active |
| RF Type | VSAT | VSAT |
| Topology | Absorptive | Absorptive |
| Circuit | SPDT | SPDT |
| Frequency Range | 9kHz ~ 30GHz | 100MHz ~ 30GHz |
| Isolation | 60dB | 65dB |
| Insertion Loss | 2dB | 2dB |
| Test Frequency | 30GHz | 20GHz |
| P1d B | 28dBm | 28dBm |
| IIP3 | 52dBm | 52dBm |
| Impedance | 50Ohm | 50Ohm |
| Voltage - Supply | 3.3V | 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADRF5020BCCZN-R7 and the ADRF5021BCCZN?
Both are Analog Devices silicon SPDT switches in a 20-terminal LGA package, but they differ in frequency range and isolation performance. The ADRF5020BCCZN-R7 operates from 100 MHz to 30 GHz, while the ADRF5021BCCZN operates from 9 kHz to 30 GHz. The ADRF5021BCCZN also specifies higher isolation at lower frequencies, making it better suited for applications requiring low-frequency coverage.
Are the ADRF5020BCCZN-R7 and ADRF5021BCCZN pin-compatible?
Yes. Both devices are offered in the same 20-terminal LGA package (BCCZN) with the same pinout and footprint, so they are pin-compatible and can share a common PCB land pattern. However, designers should still verify the control logic and supply requirements against the respective datasheets before substituting one for the other.
What is the operating frequency range of each device?
The ADRF5020BCCZN-R7 is specified from 100 MHz to 30 GHz. The ADRF5021BCCZN is specified from 9 kHz to 30 GHz, extending coverage down to the audio/very-low-frequency range. Both cover the upper 30 GHz limit, but the ADRF5021BCCZN is the choice when sub-100 MHz operation is required.
What supply voltage and control interface do these switches use?
Both devices operate from a dual supply of +3.3 V and −3.3 V (VDD and VSS) and use a single positive control voltage (VCTRL) for switching. The control input is CMOS/TTL compatible, allowing direct interfacing with standard logic. Designers should confirm the exact control thresholds and current consumption in the respective datasheets.
How do the insertion loss and isolation compare between the two parts?
Both switches offer low insertion loss across their bands, but the ADRF5021BCCZN provides higher isolation at low frequencies due to its extended 9 kHz lower limit. At higher frequencies (above 100 MHz) the two parts have comparable isolation and insertion loss performance. For precise values at a specific frequency, consult the insertion loss and isolation curves in each datasheet.
What is the difference between the ADRF5020BCCZN-R7 and the ADRF5020BCCZN?
The "-R7" suffix indicates a tape-and-reel packaging option (7-inch reel) for the ADRF5020BCCZN. The electrical and mechanical specifications of the device are identical; only the packaging and order quantity differ. This is relevant for automated assembly and inventory planning.
Can the ADRF5021BCCZN be used as a drop-in replacement for the ADRF5020BCCZN-R7?
Because both share the same package, pinout, and supply/control scheme, the ADRF5021BCCZN can generally serve as a drop-in replacement where the extended low-frequency range is beneficial. However, the designer must verify that the control logic, RF matching, and performance at the target frequency meet the system requirements, since the two parts are not identical in all RF parameters.
What are typical applications for these SPDT switches?
Both devices are suited for RF and microwave signal routing in test and measurement equipment, wireless infrastructure, military and aerospace systems, and phased-array antennas. The ADRF5021BCCZN's extended low-frequency range also makes it suitable for baseband and low-frequency signal switching applications.