10 GHz to 40 GHz, 4-Channel Rx Mixer with

4× LO Multiplier/Filter

Data Sheet

ADAR2004

Rev. 0

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FEATURES

Quad LNA, mixer, IF VGA

4× LO multiplier with programmable harmonic filter

RF input frequency range: 10 GHz to 40 GHz

IF output frequency range: 0 MHz to 800 MHz

LO input frequency range: 2.4 GHz to 10.1 GHz

Gain range: 21 dB to 41 dB

Input P1dB: −20 dBm typical (at minimum gain)

Noise figure: 9 dB typical (at maximum gain)

3-wire or 4-wire SPI control

On-chip programmable state machines for fast

multiplier/filter and receiver switching and control

On-chip temperature sensor and ADC

DC power: 910 mW (2.5 V supply)

7 mm × 7 mm, 48-terminal LGA package

APPLICATIONS

Millimeter wave imaging

Security

Medical

Industrial

Multichannel receivers

GENERAL DESCRIPTION

The ADAR2004 is a 4-channel receiver IC that is optimized for

millimeter wave body scanning applications. Accepting differential

input signals from 10 GHz to 40 GHz, the ADAR2004 provides a

low intermediate frequency (IF) output up to 800 MHz. Each

receive channel also has independent gain control.

The mixer local oscillator (LO) path includes a 4× multiplier

requiring an applied LO frequency between 2.4 GHz and

10.1 GHz. The 4× multiplier block includes a programmable filter

that helps keep harmonics down before reaching the mixer.

Two programmable state machines are included to facilitate

simple configuration, control, and fast switching of the frequency

multiplier, filter, and receiver sections. These sequencers are

programmed through the serial peripheral interface (SPI) and

are then operated by pulsed inputs (reset and advance).

The ADAR2004 requires only a single 2.5 V supply with power

consumption of 910 mW with all channels turned on.

The ADAR2004 is available in a 7 × 7 mm, 48-terminal LGA

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

FUNCTIONAL BLOCK DIAGRAM

LNA

VGA

IFOUT1+

RECEIVER SEQUENCER

IFOUT1–

RFIN1+

RFIN1–

LNA

VGA

IFOUT2+

IFOUT2–

RFIN2+

RFIN2–

LNA

VGA

IFOUT3+

IFOUT3–

RFIN3+

RFIN3–

LNA

×4

VGA

IFOUT4+

IFOUT4–

RFIN4+

RFIN4–

LOIN

ADAR2004

×4

BUFFER

SPI

CONTROL

MULTIPLIER/FILTER SEQUENCER

×4

CS

SDIO

SCLK

MRST

MADV

RxRST

RxADV

SDO

MULTIPLIER/FILTER

STATE MACHINE

(16 STATES)

RECEIVER

STATE MACHINE

(16 STATES)

ADC

TEMPERATURE

SENSOR

Figure 1.