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AD9273:  Octal LNA/VGA/AAF/ADC and Crosspoint Switch

Product Details


The AD9273 is designed for low cost, low power, small size, and ease of use. It contains eight channels of a low noise preamplifier (LNA) with a variable gain amplifier (VGA); an antialiasing filter (AAF); and a 12-bit, 10 MSPS to 50 MSPS analog-to-digital converter (ADC).

Each channel features a variable gain range of 42 dB, a fully differential signal path, an active input preamplifier termination, a maximum gain of up to 52 dB, and an ADC with a conversion rate of up to 50 MSPS. The channel is optimized for dynamic performance and low power in applications where a small package size is critical.

The LNA has a single-ended-to-differential gain that is selectable through the SPI. The LNA input-referred noise voltage is typically 1.26 nV/√Hz at a gain of 21.3 dB, and the combined input-referred noise voltage of the entire channel is 1.42 nV/√Hz at typical gain. Assuming a 15 MHz noise bandwidth (NBW) and a 21.3 dB LNA gain, the input SNR is about 91 dB. In CW Doppler mode, the LNA output drives a transconductance amp that is switched through an 8 × 8 differential crosspoint switch. The switch is programmable through the SPI.

Applications

  • Medical imaging/ultrasound
  • Automotive radar

FEATURES and BENEFITS

  • 8 channels of LNA, VGA, AAF, and ADC
  • Low noise preamplifier (LNA) - See data sheet for additional information
  • Variable gain amplifier (VGA) - See data sheet for additional information
  • Antialiasing filter (AAF) - See data sheet for additional information
  • Analog-to-digital converter (ADC) - See data sheet for additional information
  • Includes an 8 × 8 differential crosspoint switch to support continuous wave (CW) Doppler
  • Low power, 109 mW per channel at 12 bits/40 MSPS (TGC)
  • 70 mW per channel in CW Doppler
  • Flexible power-down modes
  • Overload recovery in <10 ns
  • See data sheet for additional features

AD9273 Functional Block Diagram

Of Note ....

AD927x Family Overview

For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.

Documentation

Title Content Type File Type
AD9273: Octal LNA/VGA/AAF/ADC and Crosspoint Switch Data Sheet (Rev B, 07/2009) (pdf, 59 kB) Data Sheets PDF
AN-1142: Techniques for High Speed ADC PCB Layout  (pdf, 392 kB) Application Notes PDF
AN-878: High Speed ADC SPI Control Software  (pdf, 585 kB) Application Notes PDF
AN-737: How ADIsimADC Models an ADC  (pdf, 373 kB) Application Notes PDF
AN-877: Interfacing to High Speed ADCs via SPI  (pdf, 1594 kB) Application Notes PDF
AN-905: VisualAnalog Converter Evaluation Tool Version 1.0 User Manual  (pdf, 2124 kB) Application Notes PDF
AN-935: Designing an ADC Transformer-Coupled Front End  (pdf, 363 kB) Application Notes PDF
AN-835: Understanding High Speed ADC Testing and Evaluation  (pdf, 985 kB) Application Notes PDF
AN-586: LVDS Outputs for High Speed A/D Converters  (pdf, 207 kB)
High Speed ADCs Uses LVDS (Low-Voltage Differential Signaling) to Minimize Performance Limitations In ADC Applications When Providing High Speed Data Output
Application Notes PDF
AN-812:  MicroController-Based Serial Port Interface (SPI) Boot Circuit (pdf, 452,449 bytes)  (pdf, 441 kB)
This application note describes the operation of a general-purpose, microcontroller-based Serial Port Interface (SPI) boot circuit.
Application Notes PDF
AD9272/AD9273 Octal Receivers for Medical Ultrasound
The AD9272 and AD9273 are ADI's next-generation, octal receivers for medical ultrasound. Each device integrates 8 channels of LNA, VGA, AAF, and 12-bit ADC on a single chip.
Videos HTML
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
New Components Offer Fexibility in Ultrasound System Design
Ultrasound applications require increasing number of channels, range, sensitivity, and low-noise performance; new ICs offer architectural choices for these tradeoffs.
(Planet Analog, Jan 13, 2009)
Technical Articles HTML
Processors for Ultrasound Improve Image Quality
Ultrasound equipment is best known for letting expectant mothers follow development of their babies. But many other ultrasound applications go beyond the classical OBGYN experience.
(Medical Design, March 1, 2009)
Technical Articles HTML
Low Cost, Octal Ultrasound Receiver with On-Chip RF Decimator and JESD204B Serial Interface (22 Feb 2013) Press Releases HTML
Industry’s First Octal Ultrasound Receiver with Digital I/Q Demodulator and Decimation Filter Reduces Processor Overhead in Ultrasound Systems (23 Jul 2012) Press Releases HTML
AD927x/AD967x Octal Ultrasound Analog Front End (AFE) Product Family Brochure  (pdf, 674 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADIsimADC
ADIsimADC is Analog Devices' Analog-to-Digital Behavioral Model that accurately models the typical performance characteristics of many of our High Speed Converters. The model faithfully reproduces the errors associated with both static and dynamic features such as AC linearity, clock jitter, and many other product specific anomalies.
ADIsim Design/Simulation Tools HTML
AD9273 IBIS Models IBIS Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD9273 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9273BBCZ-25 Status: Production 144 ball CSPBGA (10x10) 144 Ind Tray, 184 $50.59 $43.00 Y  Material Info PCN Purchase
AD9273BBCZ-40 Status: Production 144 ball CSPBGA (10x10) 144 Ind Tray, 184 $52.94 $45.00 Y  Material Info PCN Purchase
AD9273BBCZ-50 Status: Production 144 ball CSPBGA (10x10) 144 Ind Tray, 184 $55.29 $47.00 Y  Material Info PCN Purchase
AD9273BSVZ-25 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Tray, 90 $50.59 $43.00 Y  Material Info PCN Purchase
AD9273BSVZ-40 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Tray, 90 $52.94 $45.00 Y  Material Info PCN Purchase
AD9273BSVZ-50 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Tray, 90 $55.29 $47.00 Y  Material Info PCN Purchase
AD9273BSVZRL-25 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Reel, 1000 - $43.00 Y  Material Info PCN Purchase
AD9273BSVZRL-40 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Reel, 1000 - $45.00 Y  Material Info PCN Purchase
AD9273BSVZRL-50 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Reel, 1000 - $47.00 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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