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AD6677 Dataheets PDF



Part Number AD6677
Manufacturers Analog Devices
Logo Analog Devices
Description IF Receiver
Datasheet AD6677 DatasheetAD6677 Datasheet (PDF)

Data Sheet 80 MHz Bandwidth, IF Receiver AD6677 FEATURES GENERAL DESCRIPTION JESD204B Subclass 0 or Subclass 1 coded serial digital outputs Signal-to-noise ratio (SNR) = 71.9 dBFS at 185 MHz AIN and 250 MSPS with noise shaping requantizer (NSR) set to 33% Spurious-free dynamic range (SFDR) = 87 dBc at 185 MHz AIN and 250 MSPS Total power consumption: 435 mW at 250 MSPS 1.8 V supply voltages Integer 1 to 8 input clock divider Sample rates of up to 250 MSPS IF sampling frequencies of up to 400.

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Data Sheet 80 MHz Bandwidth, IF Receiver AD6677 FEATURES GENERAL DESCRIPTION JESD204B Subclass 0 or Subclass 1 coded serial digital outputs Signal-to-noise ratio (SNR) = 71.9 dBFS at 185 MHz AIN and 250 MSPS with noise shaping requantizer (NSR) set to 33% Spurious-free dynamic range (SFDR) = 87 dBc at 185 MHz AIN and 250 MSPS Total power consumption: 435 mW at 250 MSPS 1.8 V supply voltages Integer 1 to 8 input clock divider Sample rates of up to 250 MSPS IF sampling frequencies of up to 400 MHz Internal analog-to-digital converter (ADC) voltage reference Flexible analog input range 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal) ADC clock duty cycle stabilizer (DCS) Serial port control Energy saving power-down modes APPLICATIONS Communications Diversity radio and smart antenna multiple input, multiple output (MIMO) systems Multimode digital receivers (3G) TD-SCDMA, WiMAX, W-CDMA, CDMA2000, GSM, EDGE, LTE I/Q demodulation systems General-purpose software radios The AD6677 is an 11-bit, 250 MSPS, intermediate frequency (IF) receiver specifically designed to support multi-antenna systems in telecommunication applications where high dynamic range performance, low power, and small size are desired. The device consists of a high performance ADC and an NSR digital block. The ADC consists of a multistage, differential pipelined architecture with integrated output error correction logic, and each ADC features a wide bandwidth switched capacitor sampling network within the first stage of the differential pipeline. An integrated voltage reference eases design considerations. A duty cycle stabilizer compensates for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance. The ADC output is connected internally to an NSR block. The integrated NSR circuitry allows for improved SNR performance in a smaller frequency band within the Nyquist bandwidth. The device supports two different output modes selectable via the serial port interface (SPI). With the NSR feature enabled, the output of the ADC is processed such that the AD6677 supports enhanced SNR performance within a limited portion of the Nyquist bandwidth while maintaining an 11-bit output resolution. FUNCTIONAL BLOCK DIAGRAM AVDD DRVDD DVDD AGND DGND DRGND AD6677 VIN+ VIN– VCM PIPELINE 11-BIT ADC NOISE SHAPING REQUANTIZER (NSR) JESD204B INTERFACE HIGH SPEED SERIALIZERS CML, TX OUTPUTS SERDOUT0± SYSREF± SYNCINB± CLK± RFCLK CONTROL REGISTERS CMOS DIGITAL INPUT CLOCK GENERATION CMOS DIGITAL FAST INPUT/OUTPUT DETECT CMOS DIGITAL OUTPUT PDWN FD 11411-001 RST SDIO SCLK CS Figure 1. Rev. C 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 rights of third parties that may result from its use. Specifications subject to change without notice. No 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2013–2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD6677 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Product Highlights ........................................................................... 3 Specifications..................................................................................... 4 ADC DC Specifications ............................................................... 4 ADC AC Specifications ............................................................... 5 Digital Specifications ................................................................... 6 Switching Specifications .............................................................. 8 Timing Specifications .................................................................. 9 Absolute Maximum Ratings.......................................................... 10 Thermal Characteristics ............................................................ 10 ESD Caution................................................................................ 10 Pin Configuration and Function Descriptions........................... 11 Typical Performance Characteristics ........................................... 13 Equivalent Circuits .................................................................


AD9684 AD6677 GFT035EA320240Y


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