10 GHz to 40 GHz, 1:4 Channel,

4× Frequency Multiplier/Filter

Data Sheet

ADAR2001

Rev. 0

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FEATURES

4× input frequency multiplier with programmable harmonic

filter

Quad differential output PAs with independent enable control

Input frequency range: 2.5 GHz to 10 GHz

Output frequency range: 10 GHz to 40 GHz

Input power: −20 dBm (50 Ω)

Output power: 5 dBm differential (100 Ω)

Harmonic rejection: −20 dBc to −40 dBc at all frequencies

3-wire or 4-wire SPI control of all functions

On-chip programmable state machines for fast

multiplier/filter and transmitter switching and control

On-chip temperature sensor, output power detectors, and ADC

DC power: 450 mW (2.5 V supply)

6 mm × 6 mm, 40-terminal LGA package

APPLICATIONS

Millimeter wave imaging

Security

Medical

Industrial

Wideband local oscillator (LO) multiplier/distributor

GENERAL DESCRIPTION

The ADAR2001 is a transmitter IC optimized for millimeter

wave body scanning applications. Accepting a single-ended

continuous wave (CW) input signal between 2.5 GHz and 10 GHz,

the ADAR2001 provides gain, 4× frequency multiplication,

harmonic filtering, 1:4 signal splitting, and four independently

controllable power amplifiers (PAs) with differential outputs

designed to directly drive dipole antennas with differential inputs.

All device functions and configuration options can be accessed by a

3-wire or 4-wire Analog Devices, Inc., serial peripheral interface

(SPI).

Two state machines are also integrated into the ADAR2001,

which facilitate easy configuration, control, and fast switching

of the frequency multiplier, filter, and transmitter sections.

These sequencers are programmed through the SPI and are

then operated by pulsed inputs (reset and advance).

The output power and chip temperature can be monitored by

four on-chip detectors and a temperature sensor whose outputs

are multiplexed to an 8-bit ADC.

The ADAR2001 requires only a single 2.5 V supply with power

consumption of 450 mW with one channel turned on.

The ADAR2001 is available in a compact, 40-terminal, 6 mm ×

6 mm LGA package and is specified from −40°C to +85°C.

FUNCTIONAL BLOCK DIAGRAM

ADAR2001

RFIN

BUFFER

×4

×4

×4

MULTIPLIER/FILTER SEQUENCER

TRANSMITTER SEQUENCER

ADC

RFOUT1+

RFOUT1–

RFOUT2+

RFOUT2–

RFOUT3+

RFOUT3–

RFOUT4+

RFOUT4–

CS

SDIO

SCLK

SDO

SPI

CONTROL

MRST

MADV

TxRST

TxADV

PA

PA

PA

PA

TEMP.

SENSOR

MULTIPLIER/FILTER

STATE MACHINE

(16 STATES)

TRANSMITTER

STATE MACHINE

(70 STATES)

Figure 1.