2 dB LSB, 4-Bit, Silicon Digital Attenuator, 9 kHz to 40 GHz

The ADRF5721 is a silicon, 4-bit digital attenuator with a 30 dB attenuation control range in 2 dB steps.

This device operates from 9 kHz to 40 GHz with better than 3.4 dB of insertion loss. The ATTIN port of the ADRF5721 has a radio frequency (RF) input power handling capability of 26 dBm average and 30 dBm peak for all states.

The ADRF5721 requires a dual supply voltage of +3.3 V and −3.3 V. The device features serial peripheral interface (SPI), parallel mode control, and complementary metal-oxide semiconductor (CMOS)-/low voltage transistor to transistor logic (LVTTL)-compatible controls.

The ADRF5721 is pin compatible with the ADRF5731, the fast switching version, which operates from 100 MHz to 40 GHz.

The ADRF5721 RF ports are designed to match a characteristic impedance of 50 Ω.

The ADRF5721 comes in a 16-terminal, 2.5 mm × 2.5 mm, RoHS compliant, land grid array (LGA) package and operates from −40°C to +105°C.

Applications

* Industrial scanners

* Test and instrumentation

* Cellular infrastructure: 5G millimeter wave

* Military radios, radars, electronic counter measures (ECMs)

* Microwave radios and very small aperture terminals (VSATs)

* Ultrawideband frequency range: 9 kHz to 40 GHz

* Attenuation range: 2 dB steps to 30 dB

* Low insertion loss

* 1.6 dB to 18 GHz

* 2.0 dB to 26 GHz

* 3.4 dB to 40 GHz

* Attenuation accuracy

* ±(0.1 + 1.0%) of attenuation state up to 18 GHz

* ±(0.1 + 2.5%) of attenuation state up to 26 GHz

* ±(0.6 + 10.0%) of attenuation state up to 40 GHz

* Typical step error

* ±0.15 dB to 18 GHz

* ±0.20 dB to 26 GHz

* ±0.60 dB to 40 GHz