AD9271
PRODUCTIONOctal LNA/VGA/AAF/ADC and Crosspoint Switch
- Part Models
- 3
- 1ku List Price
- Starting From $60.84
Overview
- 8 channels of LNA, VGA, AAF, and ADC
- Low noise preamplifier (LNA)
Input-referred noise = 1.1 nV/√Hz @ 5 MHz typical, gain = 18 dB
SPI-programmable gain = 14 dB/15.6 dB/18 dB
Single-ended input; VIN maximum = 400 mVP-P/333 mV p-p/250 mVP-P
Dual-mode active input impedance matching
Bandwidth (BW) > 70 MHz
Full-scale (FS) output = 2 VP-P differential
- Variable gain amplifier (VGA)
Gain range = −6 dB to +24 dB
Linear-in-dB gain control - Antialiasing filter (AAF)
3rd-order Butterworth cutoff
Programmable from 8 MHz to 18 MHz - See Data Sheet for Additional Information
The AD9271 is designed for low cost, low power, small size, and ease of use. It contains eight channels of a variable gain amplifier (VGA) with low noise preamplifier (LNA); 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 30 dB, a fully differential signal path, an active input preamplifier termination, a maximum gain of up to 40 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 noise is typically 1.2 nV/√Hz, and the combined input-referred noise of the entire channel is 1.4 nV/√Hz at maximum gain. Assuming a 15 MHz noise bandwidth (NBW) and a 15.6 dB LNA gain, the input SNR is roughly 86 dB. In CW Doppler mode, the LNA output drives a transconductance amp that is switched through an 8 × 6 differential crosspoint switch. The switch is programmable through the SPI.
APPLICATIONS
- Medical imaging/ultrasound
- Automotive radar
Documentation
Data Sheet 1
Application Note 5
Technical Articles 3
Evaluation Design File 1
Informational 1
Analog Dialogue 2
Webcast 1
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 |
|---|---|---|---|
| AD9271BSVZ-40 | 100-Lead TQFP (14mm x 14mm) | ||
| AD9271BSVZ-50 | 100-Lead TQFP (14mm x 14mm) | ||
| AD9271BSVZRL-40 | 100-Lead TQFP (14mm x 14mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 15, 2016 - 14_0258 Assembly Transfer of Selected 14x14 LQFP, 14x14 LQFP_EP and 7x7,10x10,12x12,14x14 TQFP_EP Products to Amkor Philippines |
||
| AD9271BSVZ-40 | ||
| AD9271BSVZ-50 | ||
| AD9271BSVZRL-40 | PRODUCTION | |
|
Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades) |
||
| AD9271BSVZ-40 | ||
| AD9271BSVZ-50 | ||
| AD9271BSVZRL-40 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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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.
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