本文介绍了一款窄带SFDR超过72dB的DDS模块，适用于2.3V到5.5V电源，输出频率高达37.5MHz。该模块支持正弦和三角波输出，内置比较器，采用3-wire SPI接口，工作温度范围为-40°C至+105°C，具备功率下电选项。应用领域包括频率刺激、波形生成、低功耗RF/通信系统、液体和气体流量测量以及感应应用如接近、运动和缺陷检测。
20 mW Power, 2.3 V to 5.5 V, 75 MHz Complete DDS
FEATURES
Narrow-band SFDR >72 dB
2.3 V to 5.5 V power supply
Output frequency up to 37.5 MHz
Sine output/triangular output
On-board comparator
3-wire SPI® interface
Extended temperature range: −40°C to +105°C
Power-down option
20 mW power consumption at 3 V
20-lead TSSOP
APPLICATIONS
Frequency stimulus/waveform generation
Frequency phase tuning and modulation
Low power RF/communications systems
Liquid and gas flow measurement
Sensory applications: proximity, motion, and defect
detection
Test and medical equipment
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