DSA400-1133Q0192KI2VAO

Clock Generators, PLLs, Frequency Synthesizers Overview

The DSA400-1133Q0192KI2VAO is a configurable four-output low jitter clock generator utilizing PureSilicon™ MEMS technology. It operates within a supply voltage range of 2.25V to 3.6V and supports frequencies from 2.3 MHz to 460 MHz for differential outputs, with LVCMOS limited to 170 MHz. The device features ±25 ppm stability and complies with PCIe Gen1/2/3/4 Common Clock specifications. It provides four format-configurable outputs (LVPECL, LVDS, HCSL, LVCMOS) grouped into two banks with independent power supplies. The component is AEC-Q100 qualified for Automotive Grade 2, operating between –40°C and +105°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• PureSilicon™ MEMS technology eliminates the need for external crystals, offering superior shock and vibration immunity compared to quartz-based devices.
• Four output formats are independently configurable per pin, supporting LVPECL, LVDS, HCSL, and LVCMOS interfaces.
• Dual frequency selection inputs allow hardware strapping to choose between two pre-configured frequency sets per bank.
• Independent VDD1 and VDD2 power supplies optimize noise isolation between the two output banks.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Automotive Infotainment systems
• Automotive Advanced Driver Assistance Systems (ADAS)
• Autonomous Driving applications
• In-Vehicle Network architectures

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific factory-assigned Qxxxx code matches the required frequency configuration. Confirm the ordering suffix indicates the correct temperature grade and packaging option. Ensure the part number reflects the desired output formats for all four channels. Cross-reference the datasheet revision to confirm compatibility with current design requirements.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low phase jitter and high reliability in automotive environments are critical. Use the ClockWorks Configurator tool to define specific frequency requirements and output formats. Verify that the required frequencies fall within the 2.3 MHz to 460 MHz range for differential modes or 170 MHz for LVCMOS. Check if the ±25 ppm stability meets system timing constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the DSA400 family of configurable MEMS clock generators designed specifically for automotive applications. It replaces traditional crystal oscillators by integrating the resonator internally. The family offers flexibility through customizable frequency tables and output interface configurations managed via Microchip's configurator software.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct substitutes require matching the 20-pin QFN footprint and MEMS architecture. Verify equivalent AEC-Q100 qualification and similar jitter performance metrics. Ensure the replacement supports the same output formats and frequency ranges. Consult Microchip for updated alternatives if the specific Q-code is discontinued.

Clock Generators, PLLs, Frequency Synthesizers FAQ

Does the DSA400 require an external crystal?

No, the DSA400 utilizes an integrated MEMS resonator and does not require an external crystal to operate.

How are the output frequencies selected?

Frequencies are factory-programmed based on customer requirements defined in the ClockWorks Configurator. Hardware inputs FSB1 and FSB2 allow selection between two pre-configured frequency sets per bank.

What is the maximum frequency for LVCMOS outputs?

The maximum frequency for LVCMOS outputs is 170 MHz. Differential outputs support frequencies up to 460 MHz.