HMC832ALP6GETR

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HMC832ALP6GETR is a frequency synthesizer with an integrated voltage control oscillator (VCO). It is part of the Frequency Generation and Control group in the Clock / Timing category from Hittite Microwave Corporation. The device is an ideal solution for high-performance frequency conversion applications that require high levels of performance, stability and power efficiency. The device incorporates voltage-controlled crystal oscillator (VCXO) technology, coupled with digital PLL for frequency synthesizer applications.

The device provides programmable wide frequency range of up to 2 GHz, with a frequency step size range as low as 500 Hz. It also supports various modulation formats such as direct analog modulation via VCO control voltage, sinusoidal modulated VCO control voltage, and FSK (frequency-shift keying). The device can operate in a variety of modes, including:

• Constant Frequency Mode where a set of pre-selected frequencies are programmed
• Frequency Hopping Mode where the device switches between different frequencies for better performance
• Sweeping Mode where the device sweeps between two or more frequencies continuously
• Dual Frequency Mode where two separate frequencies can be generated at the same time via two separate outputs
• Direct Digital Modulation (DDM) Mode where a digitally encoded signal is generated

The device can also be used in applications where the frequency of a single output must be modulated or switched between two or more frequencies. Examples of applications include radio transceivers, frequency hopping radios, and digital transceivers. It can also be used in various custom applications such as phased array radar, satellite communication systems and more.

The HMC832ALP6GETR includes a PLL signal path design which incorporates an analog phase-frequency detector, a programmable charge-pump, and an analog loop filter. This signal path design enables a wide range of operating frequencies and fast settling times. The charge-pump can provide up to 25mA of current for fast frequency locking of the PLL and offers very low jitter performance up to 2.4GHz. The device also includes a high frequency, low noise VCO, which is integrated with a harmonic canceling circuit to provide a frequency response from 200MHz to 2GHz.

The device also incorporates a programmable start-up mode, allowing users to select their desired frequency without the need to manually configure the device. This feature is especially useful in applications where the output frequency must be set quickly, such as in automatic frequency hopper and frequency agile systems.

The HMC832ALP6GETR also includes an integrated digital-to-analog converter (DAC) to adjust the VCO control voltage, allowing users to customize the loop filter performance to optimize the VCO characteristics. The device also includes a low noise power detector, allowing users to monitor and control the input power.

Overall, the HMC832ALP6GETR is an excellent device for applications that require quick switching between frequencies, long-term stability in a frequency-hopping system, and flexibility for the user to program desired frequencies. The device’s wide frequency range, low noise VCO circuit design, and fast settling and locking features make this device an ideal solution for performing fast frequency conversions and synthesizing low jitter frequencies for high-performance applications.

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