FAIRCHILD Semiconductor, represented in Australia by Soanar , has released the FSUSB23, the smallest single-port USB 2.0 ‘Hi-Speed’ (480Mbps) analogue switch in a MicroPak chip scale package (CSP).
Its compact packaging, combined with very low power consumption (<1μA) and wide bandwidth (>720MHz) operation, make it a suitable high-performance, space-saving USB 2.0 switch for today’s multi-functional cell phones.
Fairchild’s 1.6mm x 2.1mm MicroPak 10-terminal chip scale package delivers a 68% footprint reduction compared to typical competitive switches (3.36mm2 vs 10.5mm2).
Additional applications for the FSUSB23 include PDAs, MP3 players, digital cameras and laptops.
The FSUSB23’s ability to switch hi-speed USB signals allows it to comfortably pass the eye diagram compliance for ac and dc performance to meet the USB 2.0 high-speed standard. It also retains complete USB 1.1 full-speed (12Mbps) reverse compatibility for use in a range of applications.
“Signal integrity and low power consumption are especially critical considerations in cell phone applications,” said Fairchild product manager for Analogue Switches, Jerry Johnston.
“The FSUSB23’s wide bandwidth meets these concerns by easily passing third order harmonic frequencies with virtually undetectable levels of distortion and jitter.
“Additionally, the convergence of more features and connectivity into increasingly smaller ultra-portables is driving the demand for hi-speed USB switches in the smallest available packages. The combined performance attributes and ultra-compact packaging of the FSUSB23 offer designers the flexibility they need to solve their design challenges.”
Other key design features of the FSUSB23 include:
* Higher 7kV Electrostatic Discharge (ESD) vs typical 2kV ESD in competing components provides greater application robustness
* 6Ω typical On Resistance (RON) improves noise margin
* Non-adjacent channel crosstalk (-43dB at 250Mhz) minimises signal interference
* Choice of 16-terminal DQFN package offers better suitability for notebooks and other larger portable applications.
The FSUSB23 complements Fairchild’s expanding line of high-performance USB switch solutions providing the industry’s best combination of wide bandwidth, high signal quality and compact packaging.
Other USB-compliant products include the FSUSB22, a low-power two-port analogue switch also for hi-speed USB compliance and the FSUSB11, a low-power, single-port full-speed USB switch.
The lead (Pb)-free FSUSB23 meets or exceeds the requirements of the joint IPC/JEDEC standard J-STD-020B and is compliant with European Union requirements.
The FSUSB23 is available now and can be delivered in four weeks.