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The ADAR4001ACPZ is a 2 GHz to 18 GHz quad-input, single-output beamformer IC (BFIC) that is optimized for phased array receive applications. A true, time delay based, core ensures beam-squint free wideband operation. The full-scale delay of the time delay unit (TDU) can be set to either 254 ps or 508 ps with a minimum step size of 2 ps and 4 ps, respectively. At 2 GHz, this results in a phase adjustment range of 365°, and at 18 GHz, the minimum phase step size is 13°.

Each path also has a 31.5 dB digital step attenuator (DSA) with a step size of 0.5 dB.

Control of all the on-chip registers is through a simple 3-wire or 4-wire serial port interface (SPI). Four address pins allow SPI control of up to 16 devices on the same serial lines.

The on-chip, random access memory (RAM) and first in, first out (FIFO) memory have storage for up to 64 and 16 beamstates, respectively. The on-chip sequencer can be used to select and advance the beamstate, which can be sourced from the RAM or FIFO.

The ADAR4001ACPZ is available in a 36-lead 6 mm × 6 mm LFCSP and is specified from −40°C to +85°C.

Features Of ADAR4001ACPZ

Wideband, 2 GHz to 18 GHz frequency range

Quad input, single output

True time delay core for wideband beam-squint free operation

0 ps to 508 ps range with 4 ps resolution

0 ps to 254 ps range with 2 ps resolution

31.5 dB gain adjustment range with 0.5 dB step size

4-bit pin-programmable device address setting

On-chip sequencer

Beam update via register, RAM, or FIFO

Programmable amplifier bias

APPLICATIONS Of ADAR4001ACPZ

Phased array communications links

Satellite communications (SATCOM)

Phased array radar

Electronic warfare

Test and measurement equipment

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