The Rise of Automotive Grade, AEC-Q100 Clock Generators
■Skyworks recently introduced the Si5332-AM products, a family AEC-Q100 qualified programmable clock generators capable of consolidating the functionality of up to 8 quartz crystals and/or oscillators into a single IC. These devices provide a unique combination of frequency-flexibility and industry leading RMS phase jitter performance, in a programmable platform leveraging the ClockBuilder Pro software utility. Si5332-AM features two MultiSynth fractional output dividers capable of synthesizing output frequencies with ppb accuracy, while at the same time, synthesizing integer related output frequencies. Numerous additional features are also included: spread spectrum modulation for EMI reduction, output enable control, output frequency selection, in-system programmability, multi-profile selection, and input reference clock redundancy. Fault detection and health monitoring indicators are included as well for safety critical applications.
■Industry adoption of the new ISO26262 standard and ASIL requirements present addition design complexity challenges. The Si5332-AM is the only AEC-Q100 qualified clock generator available with features to assist system designers in achieving system safety goals. The devices feature primary and backup input reference capability, and fault detection and health monitoring status indicators, which can actively communicate with a system safety manager. If a fault is detected, the system safety manager can take action to migrate from primary source to backup source, ensuring the output clocks maintain the correct frequencies to the endpoints. In the event the backup reference also faults, the Si5332-AM can enter into AlwaysOn mode, defaulting all output clocks to the on-chip VCO frequency.
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[ automotive networking gateway ][ infotainment ][ digital cockpit ][ ADAS ][ Lidar ][ automated driving control units ][ Modern Automotive Electronics ] |
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White Paper |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2022/2/17 |
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3.4 MB |
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