DSC8121BI5

Overview

The DSC8121BI5 is a programmable MEMS oscillator manufactured by Microchip Technology, designed for high-performance clocking applications. It operates within a supply voltage range of 2.25V to 3.6V and supports frequencies from 10 MHz to 170 MHz. The device features CMOS output logic and offers a frequency stability of ±10ppm over the specified operating temperature range of -40°C to +85°C. It is housed in a compact 6-VDFN package with dimensions of 5.00mm x 3.20mm and a maximum height of 0.90mm. The component includes enable/disable functionality and draws a maximum supply current of 35mA.

Feature Summary

• Utilizes MEMS technology for robust performance and reduced sensitivity to mechanical shock compared to traditional quartz crystals.
• Offers factory-programmable frequency options within the 10 MHz to 170 MHz range, eliminating the need for multiple inventory SKUs.
• Integrates enable/disable control pins to support power management strategies in battery-operated or energy-efficient systems.
• Provides stable CMOS output signals with low phase noise characteristics suitable for high-speed digital interfaces.

Applications

• High-speed data communication interfaces requiring precise clock synchronization
• Embedded systems and microcontroller platforms needing reliable timing sources
• Industrial equipment operating in extended temperature environments
• Consumer electronics utilizing space-constrained surface-mount designs

Procurement Notes

Verify the specific suffix codes against the official Microchip datasheet to ensure correct frequency, stability, and package variants. Confirm that the ordered part matches the required operating temperature range and supply voltage specifications for your application. Check for any recent Product Change Notifications (PCNs) regarding marking or packaging updates. Ensure compatibility with your PCB footprint and reflow soldering profiles as defined in the component's mechanical drawings.

Selection Notes

Select this model when a small form factor and wide frequency range are critical. The ±10ppm stability suits applications requiring tighter tolerance than standard 25ppm parts. Consider the 6-VDFN package for board space optimization. Evaluate the enable pin requirement if power-down states are necessary. Compare against other series members like the DSC8121AL2 for different package sizes or stability levels.

Part Context

The DSC8121BI5 belongs to the DSC8121 family of programmable MEMS oscillators from Microchip Technology. This series replaces discrete crystal and resonator solutions with integrated, software-configurable alternatives. The BI5 suffix typically denotes a specific package type (6-VDFN), frequency range, and stability grade within the broader product line, offering designers flexibility in clock generation without maintaining large inventories of fixed-frequency components.

Replacement Considerations

Direct replacements include other DSC8121 series variants such as DSC8121AI2 or DSC8121CI5, provided they match the required frequency, stability, and package dimensions. Verify that substitute parts have compatible pinouts and electrical characteristics. Cross-reference with DSC8101 series models if smaller packages or different stability specs are acceptable.