Hosonic Oscillator Enables High-Precision Navigation Timing Systems

In modern navigation and positioning systems, the GPS receiver serves as the core terminal, and its performance and accuracy directly impact the quality of location services. Mainstream solutions typically adopt a "radio frequency front-end + baseband processor + high-stability clock" architecture, where the clock source's phase noise and long-term stability are critical metrics. Compared to passive crystal oscillators, active oscillators (OSC) feature built-in oscillation circuits and output buffers, providing a cleaner, more stable square wave clock signal. Their excellent resistance to vibration and electromagnetic interference significantly reduces timing errors during GPS signal acquisition and tracking, laying a solid foundation for high-precision timing and positioning.

Within a GPS receiver, a 32.768kHz active oscillator typically provides a precise low-frequency time base for the Real-Time Clock (RTC) module and the baseband chip. Its core function is to maintain accurate timekeeping while the system is in sleep or standby mode, ensuring fast cold starts and effective management of ephemeris data. Its advantages are twofold: first, extremely low power consumption, with a typical current in the microampere range, meeting the long battery life requirements of portable and automotive devices; second, outstanding frequency stability, capable of controlling frequency deviation within ±10ppm across a temperature range of -40°C to 85°C, avoiding cumulative timing errors caused by temperature fluctuations and ensuring long-term temporal consistency for the positioning system.

Hosonic's D3SX003270004E is a high-performance 32.768kHz active oscillator. It employs a compact 3225 package (3.2mm x 2.5mm) and operates over a voltage range of 1.8V to 3.0V, compatible with the power designs of mainstream low-power GPS chip sets. Based on advanced CMOS technology, it achieves a frequency stability of ±5ppm within the industrial temperature range of -40°C to +85°C, with an annual aging rate better than ±3ppm. Its key parameters significantly enhance the reliability of GPS applications:

• Frequency Stability: ±5ppm across the full temperature range, superior to the typical ±20~50ppm of general-purpose active oscillators, ensuring long-term timing accuracy.

• Low Phase Jitter: Typical value below 1ps, providing cleaner clock edges for baseband digital circuits and reducing bit error risk.

• Fast Startup: Startup time less than 2ms, meeting the need for devices to quickly wake from sleep mode and acquire satellite signals.

• Wide Voltage Operation: 1.8V~3.0V, allowing direct power supply from a downstream LDO or battery, simplifying power design.

The oscillator integrates internal voltage regulation and wave-shaping circuits, with a Power Supply Rejection Ratio (PSRR) exceeding 40dB, effectively isolating the clock signal from noise generated by digital circuit switching. In GPS module applications, the D3SX003270004E can directly provide an RTC reference clock for navigation chips from mainstream manufacturers like U-blox, ST, and Quectel. Its excellent full-temperature stability can significantly improve the receiver's Time To First Fix (TTFF) in extreme environments. As an official authorized distributor of Hosonic, MANDU provides customers with end-to-end support, from clock tree design and signal integrity analysis to EMC pre-testing and free sample applications. Its technical team can assist customers in optimizing PCB layout to reduce parasitic capacitance effects and provides reliability validation solutions for harsh environments like automotive and outdoor applications, helping customers shorten development cycles and accelerate time to market.

For GPS receiver R&D engineers pursuing high accuracy and reliability, the Hosonic D3SX003270004E active oscillator, with its Outstanding full-temperature stability, ultra-low power consumption, and compact size, is an ideal choice for optimizing system timing performance and overall reliability. Its industrial-grade quality and consistent performance provide a solid time base guarantee for applications such as automotive navigation, asset tracking, and portable devices.

About Mandu Technology

Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.

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