Part A
ADRF5021BCCZN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3911 Stückzahl
- Package
- LGA-20
- Series
- HF-Schalter
Replacement verdict
Compatible functional replacement candidate
The ADRF5020BCCZN and ADRF5021BCCZN are functionally compatible RF switches sharing the same package, pinout, supply, and control interface, with the ADRF5021BCCZN offering a higher operating frequency range. The ADRF5021BCCZN can serve as a functional replacement candidate for the ADRF5020BCCZN where extended frequency coverage is required, subject to validation of application-specific RF performance.
Package Type
High match
Supply Voltage
High match
Control Interface
High match
Frequency Range
Validation required
Parts at a glance
Part B
ADRF5020BCCZN
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2678 Stückzahl
- Package
- LGA-20
- Series
- HF-Schalter
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 | ADRF5021BCCZN | Why it matters |
|---|---|---|---|
| Frequency Range | 100 MHz to 30 GHz | 9 kHz to 30 GHz | The ADRF5021 extends operation down to 9 kHz, enabling use in low-frequency and baseband applications where the ADRF5020 cannot operate. |
| Switch Configuration | SPDT | SPDT | Both are single-pole double-throw switches, so the same RF routing topology can be used with either part. |
| Package | 20-lead LGA (BCCZN) | 20-lead LGA (BCCZN) | Identical package and footprint allows drop-in board replacement without layout changes. |
| Insertion Loss (typical, mid-band) | ~1.0 dB | ~1.3 dB | Lower insertion loss improves signal chain budget; the ADRF5020 has a slight advantage in pass-band attenuation. |
| Isolation (typical) | ~50 dB | ~45 dB | Higher isolation reduces leakage between ports, which is critical in sensitive receive and measurement paths. |
| Control Interface | CMOS/TTL compatible | CMOS/TTL compatible | Both accept standard logic-level control, simplifying driver circuitry and microcontroller interfacing. |
| Supply Voltage | 3.3 V (dual supply options) | 3.3 V (dual supply options) | Matching supply requirements means the same power rail design can support either device. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +105 °C | The wider temperature range of the ADRF5021 suits harsher environments and higher-reliability applications. |
| Input P1dB / Power Handling | ~30 dBm | ~27 dBm | Higher power handling in the ADRF5020 supports higher-power RF signals before compression, relevant for transmit paths. |
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 |
|---|---|---|
| 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 and ADRF5021BCCZN?
Both are absorptive SPDT RF switches from Analog Devices in a 20-terminal LGA package. The ADRF5020BCCZN is specified for operation from 100 MHz to 30 GHz, while the ADRF5021BCCZN is specified for operation from 9 kHz to 30 GHz. The ADRF5021BCCZN extends low-frequency coverage down to 9 kHz, whereas the ADRF5020BCCZN starts at 100 MHz. Both use a single positive supply and negative control voltage, and both are non-reflective (absorptive) designs.
Are the ADRF5020BCCZN and ADRF5021BCCZN pin-compatible and package-compatible?
Yes. Both devices are offered in the same 20-terminal LGA package (BCCZN suffix) with the same footprint and pinout, so they are package- and pin-compatible. However, designers must still verify the control-voltage and frequency-range differences against the target design before substituting one for the other.
What supply and control voltages do the ADRF5020BCCZN and ADRF5021BCCZN require?
Both devices operate from a single positive supply (VDD) and require a negative control voltage (VSS) for the control inputs. The control logic uses complementary signals (CTRL and CTRL-bar). Designers should consult the respective Analog Devices datasheets for the exact specified VDD and VSS ranges and control thresholds, since these must be respected for reliable switching.
What is the operating frequency range of each device?
The ADRF5020BCCZN is specified from 100 MHz to 30 GHz. The ADRF5021BCCZN is specified from 9 kHz to 30 GHz. The ADRF5021BCCZN is therefore the appropriate choice when operation below 100 MHz is required, while both cover the upper range up to 30 GHz.
Are these switches absorptive or reflective?
Both the ADRF5020BCCZN and ADRF5021BCCZN are absorptive (non-reflective) SPDT switches. In the off state, the unselected port is internally terminated, which improves return loss and reduces reflections in 50-ohm systems compared with reflective designs.
What are the typical insertion loss and isolation specifications?
Both devices are wideband SPDT switches with low insertion loss and high isolation across their specified frequency ranges. Because insertion loss and isolation vary with frequency, designers should refer to the insertion loss versus frequency and isolation versus frequency curves in the respective Analog Devices datasheets for the exact values at the frequency of interest.
Can the ADRF5020BCCZN and ADRF5021BCCZN be used in 50-ohm RF signal chains?
Yes. Both are designed as 50-ohm RF switches suitable for signal-chain applications such as test and measurement, military and aerospace, and wireless infrastructure. Matching and termination are specified for a 50-ohm environment, and the absorptive design terminates unselected ports accordingly.
Which device should be selected for low-frequency or DC-adjacent applications?
The ADRF5021BCCZN should be selected when operation below 100 MHz is required, since its specified range extends down to 9 kHz. The ADRF5020BCCZN is specified only from 100 MHz upward, so it is not the appropriate choice for sub-100 MHz operation.