GENERAL DESCRIPTION

The ADRF5700 is a silicon, 5-bit digital attenuator with 46 dB

attenuation control range in 2 dB steps.

This device operates from 100 MHz to 22 GHz with better than

2.0 dB of insertion loss and high attenuation accuracy. The

ADRF5700 supports bidirectional operation and has a RF input

power handling capability of 24 dBm average and 30 dBm peak for

all attenuation states.

The ADRF5700 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 ADRF5700 can also operate with a single positive 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).

FEATURES

► Wideband frequency range: 100 MHz to 22 GHz

► Attenuation range: 46 dB with 2 dB steps

► Low insertion loss

► 1.6 dB typical up to 10 GHz

► 2.0 dB typical up to 20 GHz

► High attenuation accuracy

► +(0.1 + 0.5 of attenuation state) typical up to 10 GHz

► −(0.1 + 2.0 of attenuation state) typical up to 10 GHz

► +(0.1 + 0.5 of attenuation state) typical up to 20 GHz

► −(0.1 + 3.0 of attenuation state) typical up to 20 GHz

► Low step error

► ±0.2 dB typical up to 10 GHz

► ±0.3 dB typical up to 20 GHz

► High input linearity

► P0.1dB: >27 dBm typical at all attenuation states

► P1dB: >30 dBm typical at all attenuation states

► IP3: >47 dBm typical at all attenuation states

► High RF power handling

► 24 dBm steady state average

► 30 dBm steady state peak

► Consistent return loss at all attenuation states

► 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): 130 ns

► 20-terminal, 3.0 mm × 3.0 mm LGA package

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)