数字频率合成器（DDS）

GM4940是一款具有4路独立通道的直接数字频率合成器（DDS），每个通道均可提供独立的相位、频率、幅度控制。\n GM4940支持频率扫描（sweep），双频键控（FSK-Frequency switch keying），双相键控（PSK-phase switch keying），幅度控制（RAMP和OSK-output switch keying），混频等功能。 • 最高工作频率：1GHz\n• 通道数：4\n• 频率字位宽：32位\n• 相位字位宽：14位\n• 电源电压：1.2/3.3V\n• 宽带杂散：≤-50dBc\n• 窄带杂散：≤-72dBc\n• 通道隔离度：≥60dBc\n• 相位噪声：120dBc/Hz(@400MHz 1kHz offset)\n• 封装形式：CQFP100/QFN124\n• 支持混频功能;

Low on-resistance and maximum DC current capability

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SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

The TL494 is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control. 1. Complete Pulse Width Modulation Control Circuitry 2. On–Chip Oscillator with Master or Slave Operation 3. On–Chip Error Amplifiers 4. On–Chi

SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

The TL494 is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control. 1. Complete Pulse Width Modulation Control Circuitry 2. On–Chip Oscillator with Master or Slave Operation 3. On–Chip Error Amplifiers 4. On–Chi

SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

The TL494 is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control. 1. Complete Pulse Width Modulation Control Circuitry 2. On–Chip Oscillator with Master or Slave Operation 3. On–Chip Error Amplifiers 4. On–Chi

SWITCHING REGULATOR CONTROL CIRCUIT SILICON MONOLITHIC BIPOLAR INTEGRATED CIRCUIT

SEMICONDUCTOR SELECTION GUIDE Microcomputer IC Memory Semi-Custom IC Particular Purpose IC General Purpose Linear IC Transistor / Diode / Thyristor Microwave Device / Consumer Use High Frequency Device Optical Device Packages Index (Quick Reference by Type N

SWITCHING REGULATOR CONTROL CIRCUIT SILICON MONOLITHIC BIPOLAR INTEGRATED CIRCUIT

SEMICONDUCTOR SELECTION GUIDE Microcomputer IC Memory Semi-Custom IC Particular Purpose IC General Purpose Linear IC Transistor / Diode / Thyristor Microwave Device / Consumer Use High Frequency Device Optical Device Packages Index (Quick Reference by Type N