Integrated Device Technology has expanded its portfolio of CrystalFree CMOS oscillators with a family of devices that support the requirements of demanding 5Gbps Super-Speed USB 3.0 controller applications. The series of CMOS oscillators support all Super-Speed (SS) USB 3.0 specifications, including frequency accuracy and jitter, while offering the extremely low power required by these applications.

The devices also support low frequency periodic signaling (LFPS) and timing in USB 3.0 suspend mode with the inclusion of an optional secondary ultra-low-power LFPS oscillator. This feature enables all frequency reference circuits to be removed from the USB 3.0 controller, reducing overall solution cost and board space.

These devices have garnered considerable interest from early customers; with design successes including USB 3.0 flash memory drives and USB 3.0 to S-ATA bridge devices. Additionally, IDT has expanded its portfolio of CMOS oscillators that support High-Speed (HS) USB 2.0.

The new additions include industrial temperature range (-40°C to 85°C) sup-port and devices that detect the state of the USB controller’s crystal oscillator driver circuit to simplify crystal resonator replacement.

The family of CrystalFree devices for USB 3.0 are currently sampling to qualified customers and are available in industry-standard, crystal oscillator-compatible 5x3.2x0.85mm and low-profile 2.5x2.0x0.55mm packages. The devices are also available in die form for multi-chip packaging (MCP), chip on board (CoB), and multi-chip module (MCM) assemblies.