Epson launches SG-9101 series programmable oscillator

Aug 30,2024
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High speed clock signals are one of the important noise sources in electromagnetic compatibility (EMC) radiation and conduction experiments. Traditional coping methods include circuit reconfiguration, matching, isolation, filtering, and shielding, but often these methods do not effectively solve EMC problems, making electromagnetic compatibility engineers often feel headache when dealing with problems caused by high-speed clock signals.

For this reason, the Spread Spectrum Crystal Oscillator (SSXO) has emerged. Spread spectrum crystal oscillator is a special type of crystal oscillator that mainly relies on spread spectrum technology. This technology has a wide range of applications in anti-interference communication. By frequency modulation, narrow bandwidth energy is dispersed to a wider bandwidth range, thereby reducing spikes and dispersing energy to a wider range. This process helps to solve the problem of electromagnetic radiation (EMI) exceeding the standard caused by spikes, especially providing a reliable solution in a wide range of application fields such as healthcare and automotive.

Epson launches the programmable frequency oscillator SG-9101 series, offering industry standard package sizes of 3.2 x 2.5mm and 2.5 x 2.0mm. The power supply voltage options include 1.8V, 2.5V, and 3.3V, and the operating temperature can support industrial grade temperatures of -40~+85 ℃ and -40~+105 ℃ for extended wide range. This series offers strict frequency stability and multiple spread width options, outperforming traditional quartz crystal oscillators in optimizing electromagnetic interference (EMI) performance. The spread spectrum technology relied on by the spread spectrum crystal oscillator is the main application technology in anti-interference communication, which is very suitable for wireless communication equipment, computer and network equipment (such as computer motherboards, routers and switches), industrial control systems, medical equipment, automotive electronic systems and other application scenarios, improving the overall system reliability. The programmable characteristics meet the requirements of fast delivery, and the small size selection also reduces the printed circuit board area used for EMI suppression, saving product costs and time to market.

characteristic

• Frequency range : 0.67 MHz to 170 MHz (1 ppm Step)

• Supply voltage : 1.62 V to 3.63 V

• Function : Output enable (OE) or Standby (ST¯¯)

• Configurable spread spectrum settings:

2 kinds of spread type, 6 kinds of spread width

4 kinds of modulation frequency, 3 kinds of spread profile

• PLL technology to enable short lead time

• Available field oscillator programmer “SG-Writer II”

application

Wireless communication devices: Spreadtrum oscillators are commonly used in wireless communication devices such as Wi Fi modules, Bluetooth devices, etc. It helps to reduce interference from devices to other wireless devices;

Ø Computers and network devices: In devices such as computer motherboards, routers, and switches, frequency spreading crystal oscillators can improve clock stability and reduce electromagnetic interference;

Industrial control systems: Some industrial control systems that require high clock stability may use spread spectrum crystal oscillators to ensure precise synchronization of the system;

Ø Medical equipment: In some medical devices that require high timing requirements, the spread spectrum crystal oscillator can provide a more stable clock signal;

Ø Automotive Electronic Systems: In automotive electronic systems, frequency spreading crystal oscillators can reduce electromagnetic interference and improve overall system reliability.