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AD9857/PCB 数据表(PDF) 1 Page - Analog Devices |
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AD9857/PCB 数据表(HTML) 1 Page - Analog Devices |
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1 / 31 page  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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD9857 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 REV. 0 CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter FEATURES 200 MHz Internal Clock Rate 14-Bit Data Path Excellent Dynamic Performance 80 dB SFDR @ 65 MHz ( 100 kHz) AOUT 4 –20 Programmable Reference Clock Multiplier Reference Clock Multiplier PLL Lock Detect Indicator Internal 32-Bit Quadrature DDS FSK Capability 8-Bit Output Amplitude Control Single-Pin Power-Down Function Four Programmable, Pin-Selectable Signal “Profiles” SIN(x)/x Correction (Inverse SINC Function) Simplified Control Interface 10 MHz Serial, 2- or 3-Wire SPI-Compatible 3.3 V Single Supply Single-Ended or Differential Input Reference Clock 80-Lead LQFP Surface-Mount Packaging Three Modes of Operation Quadrature Modulator Mode Single-Tone Mode Interpolating DAC Mode APPLICATIONS HFC Data, Telephony, and Video Modems Wireless Base Station Agile, L.O. Frequency Synthesis Broadband Communications GENERAL DESCRIPTION The AD9857 integrates a high-speed direct-digital synthesizer (DDS), a high-performance, high-speed 14-bit digital-to-analog converter (DAC), clock multiplier circuitry, digital filters, and other DSP functions onto a single chip, to form a complete quadrature digital upconverter device. The AD9857 is intended to function as a universal I/Q modulator and agile upconverter, single-tone DDS, or interpolating DAC for communications applications, where cost, size, power dissipation, and dynamic performance are critical attributes. The AD9857 offers enhanced performance over the industry- standard AD9856, as well as providing additional features. The AD9857 is available in a space-saving surface-mount package and is specified to operate over the extended industrial temperature range of –40 °C to +85°C. FUNCTIONAL BLOCK DIAGRAM PARALLEL DATA IN (14-BIT) D E M U X PDCLK/ FUD 14 INVERSE CIC FILTER INV CIC Q M U X (4 ) CIC (2 – 63 ) FIXED INTER- POLATOR PROGRAMMABLE INTERPOLATOR M U X QUADRATURE MODULATOR M U X INVERSE SINC FILTER INV SINC M U X 14 8 14-BIT DAC DAC_RSET IOUT IOUT OUTPUT SCALE VALUE 32 TUNING WORD TIMING & CONTROL DDS CORE REFCLK REFCLK MODE CONTROL CLOCK MULTIPLIER (4 – 20 ) M U X PROFILE SELECT LOGIC POWER- DOWN LOGIC CONTROL REGISTERS RESET CIC OVERFLOW TxENABLE SERIAL PORT DIGITAL POWER- DOWN PS1 PLL LOCK PS0 CLOCK INPUT MODE I AD9857 14 |
类似零件编号 - AD9857/PCB |
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类似说明 - AD9857/PCB |
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