AD8333

PRODUCTION

AD8333

DC to 50 MHz, Dual I/Q Demodulator and Phase Shifter

PRODUCTION

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1ku List Price Starting From $10.67

Features

Dual integrated I/Q demodulator
16 phase select options on each output (22.5° per step)
Quadrature demodulation accuracy
- Phase accuracy: ±0.1°
- Amplitude balance: ±0.05 dB
Bandwidth
- 4 × LO: 10 kHz to 200 MHz
- RF: dc to 50 MHz
- Baseband: determined by external filtering
Output dynamic range: 159 dB/Hz
LO drive > 0 dBm (50 Ω); 4 × LO > 1 MHz
Supply: ±5 V
Power consumption: 190 mW/channel (380 mW total)
Power-down

Additional Details

The AD8333 is a dual-phase shifter and I/Q demodulator that enables coherent summing and phase alignment of multiple analog data channels. It is the first solid-state device suitable for beamformer circuits, such as those used in high performance medical ultrasound equipment featuring CW Doppler. The RF inputs interface directly with the outputs of the dual-channel, low noise preamplifiers included in the AD8332.

A divide-by-4 circuit generates the internal 0° and 90° phases of the local oscillator (LO) that drive the mixers of a pair of matched I/Q demodulators.

The AD8333 can be applied as a major element in analog beamformer circuits in medical ultrasound equipment.

The AD8333 features an asynchronous reset pin. When used in arrays, the reset pin sets all the LO dividers in the same state. Sixteen discrete phase rotations in 22.5° increments can be selected independently for each channel. For example, if Channel 1 is used as a reference and the RF signal applied to Channel 2 has an I/Q phase lead of 45°, Channel 2 can be phase aligned with Channel 1 by choosing the correct code.

Phase shift is defined by the output of one channel relative to another. For example, if the code of Channel 1 is adjusted to 0000 and that of Channel 2 to 0001 and the same signal is applied to both RF inputs, the output of Channel 2 leads that of Channel 1 by 22.5°.

The I and Q outputs are provided as currents to facilitate summation. The summed current outputs are converted to voltages by a high dynamic-range, current-to-voltage (I-V) converter, such as the AD8021, configured as a transimpedance amplifier. The resultant signal is then applied to a high resolution ADC, such as the AD7665 (16 bit/570 kSPS).

The two I/Q demodulators can be used independently in other nonbeamforming applications. In that case, a transimpedance amplifier is needed for each of the I and Q outputs, four in total for the dual I/Q demodulator.

The dynamic range is 159 dB/Hz at each I and Q output, but the following transimpedance amplifier is an important element in maintaining the overall dynamic range, and attention needs to be paid to optimal component selection and design.

The AD8333 is available in a 32-lead LFCSP (5 mm × 5 mm) package for the industrial temperature range of −40°C to +85°C.

Applications

Medical imaging (CW ultrasound beamforming)
Phased array systems (radar and adaptive antennas)
Communication receivers

View All Documentation

Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 3

1ku List Price Starting From $10.67

Technical Documents 4

AD8333: DC to 50 MHz, Dual I/Q Demodulator and Phase Shifter Data Sheet (Rev.F) 10/24/2005

AN-924: Digital Quadrature Modulator Gain 11/20/2020

Streamline medical ultrasound designs with monolithic Doppler phase-shifter 04/25/2005

How Ultrasound System Considerations Influence Front-End Component Choice 07/01/2002

Design Resources 3

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD8333ACPZ-REEL	32-Lead LFCSP (5mm x 5mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8333ACPZ-REEL7	32-Lead LFCSP (5mm x 5mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8333ACPZ-WP	32-Lead LFCSP (5mm x 5mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

AD8333ACPZ-REEL
Pin/Package Drawing
32-Lead LFCSP (5mm x 5mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8333ACPZ-REEL7
Pin/Package Drawing
32-Lead LFCSP (5mm x 5mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8333ACPZ-WP
Pin/Package Drawing
32-Lead LFCSP (5mm x 5mm w/ EP)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Jul 18, 2022

- 21_0271

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

AD8333ACPZ-REEL

PRODUCTION

AD8333ACPZ-REEL7

PRODUCTION

AD8333ACPZ-WP

pdf

PCN21_0271_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Qualification Results Summary

Nov 10, 2014

- 14_0047

Conversion of 5x5mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines.

AD8333ACPZ-REEL

PRODUCTION

AD8333ACPZ-REEL7

PRODUCTION

pdf

PCN14_0047_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Package Outline Drawing

pdf

Qualification Results Summary

Feb 15, 2010

- 07_0061

LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC

AD8333ACPZ-REEL

PRODUCTION

Material_Report.csv

xls

Material_Report

xls

PCN_07_0061_RevB_China

xls

PCN_07_0061_RevB_Korea

pdf

PCN07_0061_Form

Filter by Model

Part Models

Product Lifecycle

PCN

Jul 18, 2022

- 21_0271

Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages

AD8333ACPZ-REEL

PRODUCTION

AD8333ACPZ-REEL7

PRODUCTION

AD8333ACPZ-WP

pdf

PCN21_0271_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Qualification Results Summary

Nov 10, 2014

- 14_0047

Conversion of 5x5mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines.

AD8333ACPZ-REEL

PRODUCTION

AD8333ACPZ-REEL7

PRODUCTION

pdf

PCN14_0047_Form

xls

Material_Report

pdf

Detailed Change Description

pdf

Package Outline Drawing

pdf

Qualification Results Summary

Feb 15, 2010

- 07_0061

LFCSP Package Manufacturing Line Transfer from Amkor Korea to Amkor PRC

AD8333ACPZ-REEL

PRODUCTION

Material_Report.csv

xls

Material_Report

xls

PCN_07_0061_RevB_China

xls

PCN_07_0061_RevB_Korea

pdf

PCN07_0061_Form

Alternative Parts 1

Parts	Product Life Cycle	Description
AD8339	PRODUCTION	DC to 50 MHz, Quad I/Q Demodulator and Phase Shifter

EVAL-AD8333

AD8333 Evaluation Board

EVAL-AD8333

AD8333 Evaluation Board

Buy Now View Details

Product Detail

The board is shipped fully assembled and tested and is signal ready. A pair of AD8332 low-noise amplifiers (LNA) provide input matching and amplification for the differential input of the AD8333.

The evaluation board has several user-configurable features and options. For further details see the AD8333 data sheet available on-line.