Overview
The ADRF5721BCCZN-R7 is a silicon, 4-bit digital attenuator produced by Analog Devices Inc. This device offers a 30 dB attenuation control range in 2 dB steps and operates over a wide frequency range from 9 kHz to 40 GHz. It is designed for high-performance applications requiring precise attenuation control and high input linearity. The ADRF5721 features a dual supply voltage of +3.3 V and −3.3 V and supports both serial peripheral interface (SPI) and parallel mode control, with CMOS/LVTTL-compatible digital inputs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Frequency Range | 9 kHz | 40 GHz | ||
| Insertion Loss (IL) | 1.3 dB (9 kHz to 10 GHz) | 1.6 dB (10 GHz to 18 GHz) | 3.4 dB (35 GHz to 40 GHz) | dB |
| Return Loss | 20 dB (9 kHz to 10 GHz) | 19 dB (10 GHz to 18 GHz) | 16 dB (35 GHz to 40 GHz) | dB |
| Attenuation Range | 30 dB | dB | ||
| Step Size | 2 dB | dB | ||
| Input Power Handling | 26 dBm (average), 30 dBm (peak) | dBm | ||
| Input Linearity (P0.1dB) | 30 dBm (insertion loss state), 26 dBm (other states) | dBm | ||
| Third-Order Intercept (IP3) | 50 dBm | dBm | ||
| RF Amplitude Settling Time | 8.5 μs (0.1 dB of final RF output) | μs | ||
| Package | 16-terminal, 2.5 mm × 2.5 mm, LGA | |||
| Operating Temperature | -40°C | 105°C | °C |
Key Features
- Wide frequency range: 9 kHz to 40 GHz
- 30 dB attenuation control range in 2 dB steps
- High input linearity: P0.1dB of 30 dBm in insertion loss state and 26 dBm in other states
- High RF input power handling: 26 dBm average, 30 dBm peak
- Low insertion loss: better than 3.4 dB across the frequency range
- SPI and parallel mode control, CMOS/LVTTL-compatible
- Fast RF amplitude settling time: 8.5 μs to 0.1 dB of final RF output
- Pin compatible with ADRF5731, the fast switching version
- RoHS compliant, 16-terminal LGA package
Applications
- Industrial scanners
- Test and instrumentation
- Cellular infrastructure: 5G millimeter wave
- Military radios, radars, and electronic counter measures (ECMs)
- Microwave radios and very small aperture terminals (VSATs)
Q & A
- What is the frequency range of the ADRF5721?
The ADRF5721 operates from 9 kHz to 40 GHz.
- What is the attenuation control range of the ADRF5721?
The ADRF5721 has a 30 dB attenuation control range in 2 dB steps.
- What are the input power handling capabilities of the ADRF5721?
The ADRF5721 can handle 26 dBm average and 30 dBm peak RF input power.
- What are the control interfaces available for the ADRF5721?
The ADRF5721 supports SPI and parallel mode control, with CMOS/LVTTL-compatible digital inputs.
- What is the package type and size of the ADRF5721?
The ADRF5721 comes in a 16-terminal, 2.5 mm × 2.5 mm, LGA package.
- Is the ADRF5721 RoHS compliant?
Yes, the ADRF5721 is RoHS compliant.
- What are the operating temperature limits of the ADRF5721?
The ADRF5721 operates from -40°C to +105°C.
- What is the typical RF amplitude settling time of the ADRF5721?
The typical RF amplitude settling time is 8.5 μs to 0.1 dB of the final RF output.
- Is the ADRF5721 pin compatible with any other models?
Yes, the ADRF5721 is pin compatible with the ADRF5731, the fast switching version.
- What are some typical applications of the ADRF5721?
The ADRF5721 is used in industrial scanners, test and instrumentation, cellular infrastructure, military radios, radars, and microwave radios.
