Features and Benefits
- 8x Oversampling Mode, 20 MSPS Clock
- 2.5 MHz Output Word Rate
- 1.01 MHz Signal Passband w/ 0.004 dB Ripple
- Signal-to-Noise Ratio: 88.5 dB
- Total Harmonic Distortion: –96 dB
- Spurious Free Dynamic Range:
- Input Referred Noise: 0.6 LSB
- Selectable Oversampling Ratio: 1x, 2x, 4x, 8x
- Selectable Power Dissipation:
150 mW to 585 mW
- 85 dB Stopband Attenuation
- Single +5 V Analog Supply, +5 V/+3 V Digital Supply
- Synchronize Capability for Parallel ADC Interface
The AD9260 is a 16-bit, high speed oversampled analog-to-digital converter (ADC) that offers exceptional dynamic range over a wide bandwidth. The AD9260 is manufactured on an advanced CMOS process. High dynamic range is achieved with an oversampling ratio of 8X through the use of a proprietary technique which combines the advantages of sigma-delta and pipeline converter technologies.
The AD9260 is a switched-capacitor ADC with a nominal full-scale input range of 4V. It offers a differential input with 60dB of common mode rejection of common mode signals. The signal range of each differential input is +/- 1V centered on a 2.0V common -mode level.
The on-chip decimation filter is configured for maximum performance and flexibility. A series of three half-band FIR filter stages provide 8X decimation filtering with 85 dB of stopband attenuation and 0.004dB of passband ripple. An on-board digital multiplexer allows the user to access data from the various stages of the decimation filter. The on-chip programmable reference and reference buffer amplifier are configured for maximum accuracy and flexibility. An external reference can also be chosen to suit the users specific dc accuracy and drift requirements.
The AD9260 operates on a single +5V supply, typically consuming 550mW of power. A power scaling circuit is provided allowing the AD9260 to operate at power consumption levels as low as 150mW at reduced clock and data rates. The AD9260 is available in a 44-pin MQFP package and is specified to operate over the industrial temperature range.
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.
Documentation & Resources
AN-905: VisualAnalog™ Converter Evaluation Tool Version 1.0 User Manual8/18/2020
AN-835: Understanding High Speed ADC Testing and Evaluation (Rev. B)5/12/2015
AN-501: Aperture Uncertainty and ADC System Performance (Rev. A)2/14/2015
AN-282: Fundamentals of Sampled Data Systems2/14/2015
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev. 0)2/14/2015
AN-935: Designing an ADC Transformer-Coupled Front End (Rev. 0)2/14/2015
AN-345: Grounding for Low-and-High-Frequency Circuits2/14/2015
AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (Rev. B)2/14/2015
AN-311: How to Reliably Protect CMOS Circuits Against Power Supply Overvoltaging3/8/2008
AN-737: How ADIsimADC Models an ADC (Rev. B)11/9/2007
AN-715: A First Approach to IBIS Models: What They Are and How They Are Generated (Rev. 0)12/14/2004
AN-741: Little Known Characteristics of Phase Noise (Rev. 0)11/29/2004
AN-397: Electrically Induced Damage to Standard Linear Integrated Circuits:11/18/2002
Designing Power Supplies for High Speed ADC2/1/2012
Understanding Continuous-Time, Discrete-Time Sigma-Delta ADCs And Nyquist ADCs2/20/2009
Oversampling ADCs for 16-Bit Resolution1/1/1998 Analog Dialogue
Tools & Simulations
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.
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.
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