GENERAL DESCRIPTION

The ADRF5474 is a 4-bit digital attenuator with 22 dB attenuation

control range in 2 dB steps manufactured in a silicon process

attached on a gallium arsenide (GaAs) carrier substrate. The substrate

incorporates the bond pads for chip and wire assembly, and

the bottom of the device is metalized and connected to ground.

This device operates from 10 MHz to 60 GHz with better than

2.7 dB of insertion loss and excellent attenuation accuracy at

55 GHz. The ADRF5474 has a RF input power handling capability

of 23 dBm average and 24 dBm peak for all states.

The ADRF5474 requires a dual-supply voltage of +3.3 V and

−3.3 V. The device features parallel mode control, and complementary

metal-oxide semiconductor (CMOS)-/low voltage transistor to

transistor logic (LVTTL)-compatible controls.

The ADRF5474 is designed to match a characteristic impedance of 50 Ω.

FEATURES

► Ultrawideband frequency range: 10 MHz to 60 GHz

► Attenuation range: 22 dB with 2 dB steps

► Bond pads for wire bond and ribbon bond

► Low insertion loss

► 1.3 dB typical up to 20 GHz

► 2.0 dB typical up to 44 GHz

► 2.7 dB typical up to 55 GHz

► Attenuation accuracy

► ±(0.3 + 1.0 of attenuation state) typical up to 20 GHz

► ±(0.4 + 4.0 of attenuation state) typical up to 44 GHz

► ±(0.4 + 6.0 of attenuation state) typical up to 55 GHz

► Typical step error

► ±0.30 dB typical up to 20 GHz

► ±0.65 dB typical up to 44 GHz

► ±1.10 dB typical up to 55 GHz

► High input linearity

► P0.1dB: 25.5 dBm typical

► IP3: 45 dBm typical

► High RF power handling

► 23 dBm steady state and hot switching, average

► 24 dBm steady state and hot switching, peak

► Tight distribution in relative phase

► No low frequency spurious signals

► Parallel mode control, CMOS/LVTTL compatible

► RF amplitude settling time (0.1 dB of final RF output): 175 ns

► 16-pad, 2.770 mm × 1.620 mm, die on carrier [CHIP]

APPLICATIONS

► Industrial scanners

► Test and instrumentation

► Cellular infrastructure: 5G millimeterwave

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

► Microwave radios and very small aperture terminals (VSATs)