Part A
ADRF5020BCCZN-R7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2390 PCS
- Package
- LGA-20
- Series
- RF Switches
Replacement verdict
Not a drop-in replacement
The ADRF5720BCCZN and ADRF5020BCCZN-R7 are fundamentally different RF components: the ADRF5720BCCZN is a 6-bit digital step attenuator, while the ADRF5020BCCZN-R7 is an absorptive SPDT RF switch. They serve distinct signal-chain functions and cannot be substituted for one another in a given design.
Different function
Different RF topology
Different control interface
Different signal path role
Parts at a glance
Part B
ADRF5720BCCZN
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6772 PCS
- Package
- LGA-24
- 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 | ADRF5720BCCZN | ADRF5020BCCZN-R7 | Why it matters |
|---|---|---|---|
| Function | Digital attenuator (6-bit, 0.5 dB LSB) | SPDT RF switch | These are fundamentally different device types; one attenuates signal amplitude while the other routes signals between ports, so they are not functionally interchangeable. |
| Frequency range | 9 kHz to 40 GHz | 100 MHz to 40 GHz | The usable bandwidth determines whether the part can support the application's signal spectrum; the attenuator extends to much lower frequencies. |
| Attenuation range / switching configuration | 0 to 31.5 dB in 0.5 dB steps | SPDT (single-pole double-throw), non-reflective | Defines the core signal-processing capability: precise amplitude control versus two-way signal routing. |
| Insertion loss | ~1.6 dB (typical, mid-band) | ~1.5 dB (typical, mid-band) | Insertion loss directly impacts system link budget and signal-to-noise performance; both are low-loss but serve different signal paths. |
| Control interface | 6-bit parallel / serial (SPI-compatible) control | Single digital control (TTL/CMOS) with enable | The control scheme affects board layout, microcontroller pin count, and firmware complexity for the host system. |
| Package | 24-lead LGA (4 mm x 4 mm) | 20-lead LGA (4 mm x 4 mm) | Footprint and pin count must match the PCB land pattern; different lead counts prevent drop-in replacement. |
| Supply voltage | 3.3 V (typical single supply) | 3.3 V (typical single supply) | Supply compatibility affects power-rail design; both operate from a common 3.3 V rail, easing integration. |
| Input IP3 / linearity | High linearity (IIP3 ~50 dBm typical) | High linearity (IIP3 ~55 dBm typical) | Linearity governs distortion under high signal power; both are high-linearity parts but the switch offers slightly better headroom. |
| Operating temperature range | -40 °C to +105 °C | -40 °C to +105 °C | Industrial temperature range ensures reliable operation in harsh environments; both meet the same grade. |
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 | ADRF5720BCCZN |
|---|---|---|
| Part Status | Active | Active |
| RF Type | VSAT | - |
| Topology | Absorptive | - |
| Circuit | SPDT | - |
| Frequency Range | 100MHz ~ 30GHz | 9 kHz ~ 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 | - | 0.5dB ~ 31.5dB |
| Power (Watts) | - | 500mW |
Frequently asked questions
What are the primary functional differences between the ADRF5720BCCZN and the ADRF5020BCCZN-R7?
The ADRF5720BCCZN is a 6-bit digital attenuator with a frequency range of 9 kHz to 40 GHz, while the ADRF5020BCCZN-R7 is an absorptive, non-reflective SPDT RF switch operating from 100 MHz to 30 GHz. One device provides signal amplitude control, and the other provides signal routing.
Are the ADRF5720BCCZN and ADRF5020BCCZN-R7 pin-to-pin or footprint compatible?
No. Both devices are supplied in a 20-terminal LGA package, but they are different functional blocks with different pin assignments and internal circuitry. The ADRF5720BCCZN is an attenuator and the ADRF5020BCCZN-R7 is an SPDT switch, so they are not interchangeable on the same PCB land pattern without redesign.
What are the operating frequency ranges of these two components?
The ADRF5720BCCZN is specified for operation from 9 kHz to 40 GHz. The ADRF5020BCCZN-R7 is specified for operation from 100 MHz to 30 GHz. The attenuator therefore covers a wider and lower-frequency range, while the switch is specified from 100 MHz upward.
How do the control interfaces of the ADRF5720BCCZN and ADRF5020BCCZN-R7 differ?
The ADRF5720BCCZN uses a 6-bit parallel control interface to set attenuation states. The ADRF5020BCCZN-R7 uses a single control voltage (CTRL) input to select between the two switch states. The attenuator requires multiple control lines, whereas the switch requires one logic control line.
What are the typical attenuation and insertion loss specifications for these parts?
The ADRF5720BCCZN provides a 6-bit attenuation range with a typical attenuation step of 0.5 dB and a maximum attenuation of 31.5 dB. The ADRF5020BCCZN-R7 is an SPDT switch specified with low insertion loss, typically around 1.5 dB at lower frequencies, and provides isolation between its two output ports. Exact values should be confirmed from the respective manufacturer datasheets for the frequency of interest.
Can the ADRF5720BCCZN and ADRF5020BCCZN-R7 be used together in the same RF signal chain?
Yes. Because they perform different functions, they can be combined in a signal chain: the ADRF5020BCCZN-R7 can route the RF signal between paths, and the ADRF5720BCCZN can then adjust the signal level. Both are silicon-based RF ICs in LGA packages and are intended for RF and microwave signal-chain applications.
What are the supply voltage and package characteristics shared by these two devices?
Both the ADRF5720BCCZN and ADRF5020BCCZN-R7 are manufactured by Analog Devices and are supplied in a 20-terminal LGA package. Both are designed for RF signal-chain use and require external DC blocking and control decoupling as specified in their datasheets. Supply voltage and current ratings differ between the two functions and must be verified individually from the manufacturer documentation.