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AD9953ASV Datenblatt(PDF) 2 Page - Analog Devices |
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AD9953ASV Datenblatt(HTML) 2 Page - Analog Devices |
2 / 42 page PRELIMINARY TECHNICAL DATA AD9953 REV. PrB 1/30/03 Page 2 Analog Devices, Inc. GENERAL DESCRIPTION The AD9953 is a Direct Digital Synthesizer (DDS) featuring a 14-bit DAC operating up to 400MSPS. The AD9953 uses advanced DDS technology, coupled with an internal high-speed, high performance D/A converter to form a digitally- programmable, complete high-frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 200 MHz. The AD9953 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9953 via a serial I/O port. The AD9953 includes an integrated 1024x32 Static RAM to support flexible frequency sweep capability in several modes. The AD9953 is specified to operate over the extended industrial temperature range of -40° to +85°C. ABSOLUTE MAXIMUM RATINGS 1 Maximum Junction Temp. ............................. +150 °C Storage Temperature ................................... -65 °C to +150 °C Vs ............................................................................ +4 V Operating Temp. ............................................ -40 °C to +85 °C Digital Input Voltage............................... -0.7 V to +Vs Lead Temp. (10 sec. soldering) ................................... +300 °C Digital Output Current ....................................... 5 mA θJA .................................................................................. 38°C/W θJC 15 °C/W * Absolute maximum ratings are limiting values, to be applied individually, and beyond which the serviceability of the circuit may be impaired. Functional operability under any of these conditions is not necessarily implied. Exposure of absolute maximum rating conditions for extended periods of time may affect device reliability. CONTENTS Functional Block Diagram 1 GENERAL DESCRIPTION 2 AD9954 PRELIMINARY ELECTRICAL SPECIFICATIONS 4 AD9953 Pinmap 7 Pin Name 8 I/O 8 Component Blocks 10 DDS Core 10 Phase Truncation 11 Clock Input 11 Phase Locked Loop (PLL) 12 DAC Output 12 Serial IO Port 12 Register Maps and Descriptions 13 Control Register Bit Descriptions 16 Control Function Register #1 (CFR1) 16 Control Function Register #2 (CFR2) Error! Bookmark not defined. Control Function Register #2 (CFR2) 21 Other Register Descriptions 22 Amplitude Scale Factor (ASF) 22 Amplitude Ramp Rate (ARR) 22 Frequency Tuning Word 0 (FTW0) 23 Phase Offset Word (POW) 23 |
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