AD9261

NOT RECOMMENDED FOR NEW DESIGNS

16-Bit, 10 MHz Bandwidth, 30 MSPS to 160 MSPS Continuous Time Sigma-Delta ADC

Data Sheet (Rev. A) Product Selection Table

Part Models: 2
1ku List Price: Starting From $29.96

Viewing:

Overview

SNR: 83 dB (85 dBFS) to 10 MHz input
SFDR: 87 dBc to 10 MHz input
Noise figure: 15 dB
Input impedance: 1 kΩ
Power: 340 mW
1.8 V analog supply operation
1.8 V to 3.3 V output supply
Selectable bandwidth 2.5 MHz/5 MHz/10 MHz

Output data rate: 30 MSPS to 160 MSPS
Integrated decimation filters
Integrated sample rate converter
On-chip PLL clock multiplier
On-chip voltage reference
Offset binary, Gray code, or twos complement data format
Serial control interface (SPI)

The AD9261 is a 16-bit analog-to-digital converter (ADC) based on a continuous time sigma-delta (Σ-Δ) architecture that achieves 86 dB of dynamic range over a 10 MHz input bandwidth. The integrated features and characteristics unique to the continuous time Σ-Δ architecture significantly simplify its use and minimize the need for external components.

The AD9261 has a resistive input impedance that significantly relaxes the requirements of the driver amplifier. In addition, a 32× oversampled 5^th-order continuous time loop filter significantly attenuates out of band signals and aliases, reducing the need for external filters at the input.

An external clock input or the integrated integer-N PLL provides the 640 MHz internal clock needed for the oversampled continuous time Σ-Δ modulator. On-chip decimation filters and sample rate converters reduce the modulator data rate from 640 MSPS to a user-defined output data rate between 30 MSPS to 160 MSPS, enabling a more efficient and direct interface.

The digital output data is presented in offset binary, Gray code, or twos complement format. A data clock output (DCO) is provided to ensure proper timing with the receiving logic.

The AD9261 operates on a 1.8 V analog supply and a 1.8 V to 3.3 V digital supply, consuming 375 mW. The AD9261 is available in a 48-lead LFCSP and is specified over the industrial temperature range (−40°C to +85°C).

Product Highlights

Continuous time Σ-Δ architecture efficiently achieves high dynamic range and wide bandwidth.
Passive input structure reduces or eliminates the requirements for a driver amplifier.
An oversampling ratio of 32× and high order loop filter provide excellent alias rejection reducing or eliminating the need for antialiasing filters.
An integrated decimation filter, sample rate converter, PLL clock multiplier, and voltage reference provide ease of use.
Operates from a single 1.8 V analog power supply and 1.8 V to 3.3 V output supply.
A standard serial port interface (SPI) supports various product features and functions.

Applications

Data Acquisition
Automated Test Equipment
Instrumentation
Medical Imaging

Part Models: 2
1ku List Price: Starting From $29.96

Documentation

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
AD9261BCPZ-10	48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9261BCPZRL7-10	48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 9, 2021 - 20_0126 Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
		PCN20_0126_Form Qualification Results Summary Material_Report Detailed Change Description Package Outline Drawing Package Outline Drawing Qualification Results Summary Qualification Results Summary Qualification Results Summary Qualification Results Summary
AD9261BCPZ-10	PRODUCTION
AD9261BCPZRL7-10	PRODUCTION
Sep 13, 2017 - 16_0077 CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
		PCN16_0077_Form Material_Report Detailed Parts List Detailed Parts List Package Outline Drawing Detailed Change Description Qualification Results Summary
AD9261BCPZ-10	PRODUCTION
AD9261BCPZRL7-10	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Clock ICs 6
AD9510	RECOMMENDED FOR NEW DESIGNS	1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Eight Outputs
AD9511	RECOMMENDED FOR NEW DESIGNS	1.2 GHz Clock Distribution IC, PLL Core, Dividers, Delay Adjust, Five Outputs
AD9512	RECOMMENDED FOR NEW DESIGNS	1.2 GHz Clock Distribution IC, Two 1.6 GHz Inputs, Dividers, Delay Adjust, Five Outputs
AD9513	RECOMMENDED FOR NEW DESIGNS	800 MHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs

AD9514	RECOMMENDED FOR NEW DESIGNS	1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Three Outputs
AD9515	RECOMMENDED FOR NEW DESIGNS	1.6 GHz Clock Distribution IC, Dividers, Delay Adjust, Two Outputs
Differential Amplifiers 2
ADA4937-1	RECOMMENDED FOR NEW DESIGNS	Ultralow Distortion Differential ADC Driver (Single)
ADA4932-1	RECOMMENDED FOR NEW DESIGNS	Low Power Differential ADC Driver
Voltage References 1
ADR130	PRODUCTION	Precision Series Sub-Band Gap Voltage Reference