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AD9272: Octal LNA/VGA/AAF/ADC and Crosspoint Switch Data Sheet (Rev. C)7/22/2009PDF65 kB
Overview
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, 195 mW per channel at 12 bits/40 MSPS (TGC)
- See data sheet for additional features
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.
APPLICATIONS
- Medical imaging/ultrasound
- Automotive radar
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
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AN-905: VisualAnalog™ Converter Evaluation Tool Version 1.0 User Manual8/18/2020
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AN-878: High Speed ADC SPI Control Software (Rev. A)3/20/2018PDF585 kB
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AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)5/12/2015PDF985 kB
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AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)2/14/2015PDF363 kB
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AN-586: LVDS Outputs for High Speed A/D Converters (Rev. 0)2/14/2015PDF207 kB
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AN-1210: Powering the AD9272 Octal Ultrasound ADC/LNA/VGA/AAF with the ADP5020 Switching Regulator PMU for Increased Efficiency (Rev. B)6/28/2013PDF201 kB
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AN-1142: Techniques for High Speed ADC PCB Layout (Rev. 0)2/2/2012PDF392 kB
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AN-737: How ADIsimADC Models an ADC (Rev. B)11/9/2007PDF373 kB
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AN-812: MicroController-Based Serial Port Interface (SPI) Boot Circuit (Rev. 0)9/20/2006PDF441 kB
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• Software Download (zip, 21,702,560 bytes)
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UG-001: Evaluating the AD9272/AD9273 for Ultrasound Systems (Rev. 0)2/25/2009PDF2 M
Tools & Simulations
Design Tools
Visual Analog
For designers who are selecting or evaluating high speed ADCs, VisualAnalog™ is a software package that combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface.
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD9272BSVZ-40 | Material Declaration | Reliability Data | 100-Lead TQFP (14mm x 14mm) | |
| AD9272BSVZ-65 | Material Declaration | Reliability Data | 100-Lead TQFP (14mm x 14mm) | |
| AD9272BSVZ-80 | Material Declaration | Reliability Data | 100-Lead TQFP (14mm x 14mm) | |
| AD9272BSVZRL-40 | Material Declaration | Reliability Data | 100-Lead TQFP (14mm x 14mm) | |
| AD9272BSVZRL-65 | Material Declaration | Reliability Data | 100-Lead TQFP (14mm x 14mm) | |
| AD9272BSVZRL-80 | Material Declaration | Reliability Data | 100-Lead TQFP (14mm x 14mm) | |
| Wafer Fabrication Data |
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Sample & Buy
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.