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AD9914 bảng dữ liệu(PDF) 3 Page - Analog Devices |
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AD9914 bảng dữ liệu(HTML) 3 Page - Analog Devices |
3 / 48 page Data Sheet AD9914 Rev. C | Page 3 of 48 GENERAL DESCRIPTION The AD9914 is a direct digital synthesizer (DDS) featuring a 12-bit DAC. The AD9914 uses advanced DDS technology, coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sinusoidal waveform at up to 1.4 GHz. The AD9914 enables fast frequency hopping and fine tuning resolution (64-bit capable using programmable modulus mode). The AD9914 also offers fast phase and amplitude hopping capability. The frequency tuning and control words are loaded into the AD9914 via a serial or parallel I/O port. The AD9914 also supports a user defined linear sweep mode of operation for generating linear swept waveforms of frequency, phase, or amplitude. A high speed, 32-bit parallel data input port is included, enabling high data rates for polar modulation schemes and fast reprogramming of the phase, frequency, and amplitude tuning words. The AD9914 is specified to operate over the extended industrial temperature range (see the Absolute Maximum Ratings section). Figure 2. Detailed Block Diagram 32 F0 TO F3 D0 TO D31 PS[2:0] I/O_UPDATE POWER- DOWN CONTROL DAC_RSET AOUT AOUT OSK DROVER DRCTL DRHOLD SYNC_CLK A θ CLOCK AMPLITUDE (A) FREQUENCY (ω) PHASE (θ) DIGITAL RAMP GENERATOR 2 4 MULTICHIP SYNCHRONIZATION SYSCLK PLL REF_CLK REF_CLK AD9914 OUTPUT SHIFT KEYING DATA ROUTE AND PARTITION CONTROL 3 INTERNAL CLOCK TIMING AND CONTROL ω Acos (ωt + θ) Asin (ωt + θ) DAC 12-BIT DDS INTERNAL PROGRAMMING REGISTERS |
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Mô tả tương tự - AD9914 |
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