14-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter Data Sheet AD9649 FEATURES FUNCTIONAL BLOCK DIAGRAM AVDD GND SDIO SCLK CSB DRVDD 1.8 V analog supply operation 1.8 V to 3.3 V output supply RBIAS SPI SNR VCM 74.3 dBFS at 9.7 MHz input OR PROGRAMMING DATA 71.5 dBFS at 200 MHz input D13 (MSB) VIN+ ADC SFDR CORE VIN D0 (LSB) 93 dBc at 9.7 MHz input 80 dBc at 200 MHz input DCO VREF Low power SENSE 45 mW at 20 MSPS AD9649 REF 87 mW at 80 MSPS SELECT Differential input with 700 MHz bandwidth DIVIDE BY MODE On-chip voltage reference and sample-and-hold circuit 1, 2, 4 CONTROLS 2 V p-p differential analog input DNL = 0.35 LSB CLK+ CLK PDWN DFS MODE Serial port control options Figure 1. Offset binary, gray code, or twos complement data format Integer 1, 2, or 4 input clock divider PRODUCT HIGHLIGHTS Built-in selectable digital test pattern generation Energy-saving power-down modes 1. The AD9649 operates from a single 1.8 V analog power Data clock out (DCO) with programmable clock and data supply and features a separate digital output driver supply alignment to accommodate 1.8 V to 3.3 V logic families. 2. The sample-and-hold circuit maintains excellent performance APPLICATIONS for input frequencies up to 200 MHz and is designed for low cost, low power, and ease of use. Communications 3. A standard serial port interface (SPI) supports various Diversity radio systems product features and functions, such as data output format- Multimode digital receivers ting, internal clock divider, power-down, DCO, data output GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA Smart antenna systems (D13 to D0) timing and offset adjustments, and voltage Battery-powered instruments reference modes. Handheld scope meters 4. The AD9649 is packaged in a 32-lead RoHS-compliant LFCSP Portable medical imaging that is pin compatible with the AD9629 12-bit ADC and Ultrasound the AD9609 10-bit ADC, enabling a simple migration path Radar/LIDAR between 10-bit and 14-bit converters sampling from 20 MSPS to 80 MSPS. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20092017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com CMOS OUTPUT BUFFER 08539-001AD9649 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Voltage Reference ....................................................................... 19 Applications ....................................................................................... 1 Clock Input Considerations ...................................................... 20 Functional Block Diagram .............................................................. 1 Power Dissipation and Standby Mode .................................... 21 Product Highlights ........................................................................... 1 Digital Outputs ........................................................................... 22 Revision History ............................................................................... 2 Timing.......................................................................................... 22 General Description ......................................................................... 3 Built-In Self-Test (BIST) and Output Test .................................. 23 Specifications ..................................................................................... 4 Built-In Self-Test (BIST) ............................................................ 23 DC Specifications ......................................................................... 4 Output Test Modes ..................................................................... 23 AC Specifications .......................................................................... 5 Serial Port Interface (SPI) .............................................................. 24 Digital Specifications ................................................................... 6 Configuration Using the SPI ..................................................... 24 Switching Specifications .............................................................. 7 Hardware Interface ..................................................................... 25 Timing Specifications .................................................................. 8 Configuration Without the SPI ................................................ 25 Absolute Maximum Ratings ............................................................ 9 SPI Accessible Features .............................................................. 25 Thermal Characteristics .............................................................. 9 Memory Map .................................................................................. 26 ESD Caution .................................................................................. 9 Reading the Memory Map Register Table ............................... 26 Pin Configuration and Function Descriptions ........................... 10 Open Locations .......................................................................... 26 Typical Performance Characteristics ........................................... 11 Default Values ............................................................................. 26 AD9649-80 .................................................................................. 11 Memory Map Register Table ..................................................... 27 AD9649-65 .................................................................................. 13 Memory Map Register Descriptions ........................................ 29 AD9649-40 .................................................................................. 14 Applications Information .............................................................. 30 AD9649-20 .................................................................................. 15 Design Guidelines ...................................................................... 30 Equivalent Circuits ......................................................................... 16 Outline Dimensions ....................................................................... 31 Theory of Operation ...................................................................... 17 Ordering Guide .......................................................................... 31 Analog Input Considerations .................................................... 17 REVISION HISTORY 2/2017Rev. A to Rev. B Added Endnote 1, Table 16 ........................................................... 28 Changes to Power and Ground Recommendations Section ..... 30 Added Soft Reset Section ............................................................... 30 6/2015Rev. 0 to Rev. A Change to Product Highlights Section .......................................... 1 Changes to Figure 3 and Table 8 ................................................... 10 Updated Outline Dimensions ....................................................... 32 Changes to Ordering Guide .......................................................... 32 10/2009Revision 0: Initial Version Rev. B Page 2 of 32