AD9954集成电路（IC）的直接数字合成（DDS）规格书PDF中文资料

AD9954属于集成电路（IC）的直接数字合成（DDS）。由亚德诺半导体技术有限公司制造生产的AD9954直接数字合成（DDS）直接数字合成 (DDS) 用于由数字信号生成不同频率的模拟波形。在必须大范围扫描的无线系统中可用于频率控制。主时钟频率有 5MHz、16MHz、16.776MHz、25MHz、50MHz、75MHz、125MHz、180MHz、200MHz、250MHz、300MHz、400MHz、500MHz、1GHz、2.5GHz 和 3GHz，分辨率为 10 b、12 b 或 14 b。

GENERAL DESCRIPTION

The AD9954 is a direct digital synthesizer (DDS) that uses advanced technology, coupled with an internal high speed, high performance DAC to form a complete, digitally programmable, high frequency synthesizer capable of generating a frequencyagile analog output sinusoidal waveform at up to 160 MHz. The AD9954 enables fast frequency hopping coupled with fine tuning of both frequency (0.01 Hz or better) and phase (0.022° granularity).

FEATURES

400 MSPS internal clock speed

Integrated 14-bit DAC

Programmable phase/amplitude dithering

32-bit frequency tuning accuracy

14-bit phase tuning accuracy

Phase noise better than –120 dBc/Hz

Excellent dynamic performance

>80 dB narrowband SFDR

Serial I/O control

Ultrahigh speed analog comparator

Automatic linear and nonlinear frequency sweeping

4 frequency/phase offset profiles

1.8 V power supply

Software and hardware controlled power-down

48-lead TQFP

Integrated 1024 word × 32-bit RAM

Support for 5 V input levels on most digital inputs

PLL-based REFCLK multiplier

Internal oscillator, can be driven by a single crystal

Phase modulation capability

Multichip synchronization

APPLICATIONS

Agile LO frequency synthesis

Programmable clock generators

FM chirp source for radar and scanning systems

Automotive radars

Test and measurement equipment

Acousto-optic device drivers