Silicon Digital Attenuator, 0.25dB LSB, 7-Bit, 9kHz to 20GHz

The ADRF5703 is a 7-bit digital attenuator with a 31.75dB attenuation range and 0.25dB step size manufactured in a silicon on insulator (SOI) process.

This device operates from 9kHz to 20GHz with an insertion loss better than 1.7dB and excellent attenuation accuracy. The ADRF5703 has RF input power handling capabilities of 27dBm average and 30dBm peak for all states from the ATTIN pin.

The ADRF5703 operates with a dual-supply voltage +3.3V and −3.3V. The device can also operate with a single-supply voltage (VDD) applied while the negative supply voltage (VSS) is tied to ground. In this operating condition, the small signal performance is maintained while the switching characteristics, linearity, and power handling performance are derated, see Table 2 in the Data Sheet.

The device features serial or parallel mode control and complementary metal-oxide semiconductor (CMOS)-/low voltage transistor to transistor logic (LVTTL)-compatible controls.

The ADRF5703 comes in a 24-terminal, 4.0mm × 4.0mm, land grid array (LGA) package and can operate 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)

* Frequency range: 9kHz to 20GHz

* Attenuation range: 31.75dB with 0.25dB step size

* Low insertion loss

* 1dB typical up to 6GHz

* 1.3dB typical up to 12GHz

* 1.7dB typical up to 20GHz

* Attenuation accuracy: −(4% of the attenuation state) or +(0.1) typical up to 20GHz

* Step error: 0.20dB typical up to 20GHz

* High linearity

* Input P0.1dB

* Attenuation state < 16dB: 33dBm typical at ATTIN

* Attenuation state ≥ 16dB: 31dBm typical at ATTIN

* Input IP3: 55dBm typical at ATTIN