2308A-1HPGG8

The 2308A-1HPGG8 is a frequency synthesizer chip used for clock and timing applications. It is part of the family of devices that make up the Clock/Timing portfolio of Analog Devices. The device has several features and benefits that make it suitable for many clock and timing applications including:

Features and Benefits

• Wide Frequency Range: The device can synthesis frequencies from 2 KHz to 18GHz.
• Wide Output Voltage Range: The device provides an output voltage range of 0.2V to 5V.
• High Jitter Performance: The device has a high jitter performance of 25 fsec RMS.
• No Phase Glitch: The device is designed so that the output, clock or data, is free from glitches during frequency changes.
• Low Power: The device is low power, consuming less than 400 mA, making it suitable for battery operated and portable applications.
• Small Size: The total device size is 3 mm2 making it suitable for integration into very small devices.

Application Fields

The 2308A-1HPGG8 frequency synthesizer can be used in many applications, including:

• Communication systems: The synthesizer can be used in communication systems where it is necessary to synthesize frequencies for transmission or reception of high data rates.
• RF systems: The device can be used as a clock or RF source in RF systems.
• test and measurement systems: The device can be used to generate stable and precise frequencies for testing or calibrating instrumentation.
• Medical systems: The device can be used in medical instruments to generate low power and precise signals.

Working Principle

The 2308A-1HPGG8 frequency synthesizer works on the principle of phase locked loop (PLL). In this device, the input voltage is applied to the voltage controlled oscillator (VCO). The VCO is a variable frequency generator that produces an output signal whose frequency is determined by the applied input voltage. This signal is then compared with a signal from a high accuracy reference oscillator and the difference is used to control the VCO voltage in such a way as to keep the frequency of the signal from the VCO equal to the frequency of the reference signal.

This process requires a feedback mechanism to ensure the VCO signal remains stable and locked to the desired frequency. The feedback signal is typically a fraction of the VCO output, usually referred to as a divide-by-N signal. The outcome of this is that the VCO frequency is kept equal to the reference frequency multiplied by the ratio of the feedback signal to the reference frequency.

The 2308A-1HPGG8 frequency synthesizer can be used to produce clocks or timing signals with high accuracy and low power. The device is suitable for a wide range of applications and has many features and benefits.