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AD9272:  Octal LNA/VGA/AAF/ADC and Crosspoint Switch

Product Details

The AD9272 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 80 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 80 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 0.75 nV/√Hz at a gain of 21.3 dB, and the combined input-referred noise voltage of the entire channel is 0.85 nV/√Hz at maximum gain. Assuming a 15 MHz noise bandwidth (NBW) and a 21.3 dB LNA gain, the input SNR is about 92 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.


  • Medical imaging/ultrasound
  • Automotive radar


  • 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, 195 mW per channel at 12 bits/40 MSPS (TGC)
  • See data sheet for additional features

AD9272 Functional Block Diagram

Of Note ...


Title Content Type File Type
AD9272: Octal LNA/VGA/AAF/ADC and Crosspoint Switch Data Sheet (Rev C, 07/2009) (pdf, 65 kB) Data Sheets PDF
AN-1210: Powering the AD9272 Octal Ultrasound ADC/LNA/VGA/AAF with the ADP5020 Switching Regulator PMU for Increased Efficiency  (pdf, 201 kB) Application Notes 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
Powering High-Speed Analog-to-Digital Converters with Switching Power Supplies
(Techonline, May 2009)
Technical Articles HTML
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
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 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
AD9272 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.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended I/Q Demodulators and Phase Shifters for the AD9272

Recommended Gain Control Amplifier for the AD9272
  • For differential gain control, we recommend the AD8138 or the ADA4932-1 differential driver.
Recommended Clock Drivers for the AD9272
  • For low jitter performance and integrated VCO, we recommend the AD9520-0 and AD9522-0.
  • For low jitter, low power, clock fanout buffers, we suggest the ADCLK846 or ADCLK946.
Recommended Power Management Unit for the AD9272
  • For the individual power supply rails, we recommend the ADP5020 switching regulator.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9272 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD9272BSVZ-40 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Tray, 90 $54.12 $46.00 Y  Material Info PCN Purchase
AD9272BSVZ-65 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Tray, 90 $56.47 $48.00 Y  Material Info PCN Purchase
AD9272BSVZ-80 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Tray, 90 $63.53 $54.00 Y  Material Info PCN Purchase
AD9272BSVZRL-40 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Reel, 1000 - $46.00 Y  Material Info PCN Purchase
AD9272BSVZRL-65 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Reel, 1000 - $48.00 Y  Material Info PCN Purchase
AD9272BSVZRL-80 Status: Production 100 ld TQFP w/ 9.5mm exposed pad 100 Ind Reel, 1000 - $54.00 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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