Clock driver produces ten signals from one

The NBSG111 is a 1:10 silicon germanium differential clock driver with reduced swing emitter coupled logic outputs that deliver 10 identical signals from a single input.

Continuing to support its position as the industry's leading provider of high-performance ICs for advanced precision-application designs, ON Semiconductor has introduced the NBSG111 - a 1:10 silicon germanium (SiGe) differential clock driver with reduced swing emitter couple logic (RSECL) outputs that deliver 10 identical signals from a single input.

The device is the newest member of the company's GigaComm family of high performance logic ICs designed for telecommunications, networking and automated test equipment applications.

Operating at a maximum frequency above 6GHz, the NBSG111 can perform clock distribution duties in the fastest of these applications.

This newest clock driver is functionally equivalent to the company's popular MC100LVEP111 (a 2.5/3.3V 1:10 differential clock driver) but offers significantly improved bandwidth and lower electromagnetic interference (EMI) performance.

Like the MC100LVEP111, the NBSG111's synchronous enable feature is used to avoid a runt clock pulse when the device is enabled or disabled - a common occurrence with an asynchronous control.

The NBSG111 offers unparalleled performance for the price with jitter typically around 0.5ps and a duty cycle skew of 2ps.

To enable true design flexibility, the NBSG111 uses AnyLevel - an input technology included in all GigaComm devices that accepts negative emitter coupled logic (NECL), positive emitter coupled logic (PECL), current mode logic (CML), low voltage CMOS, low voltage transistor-transistor logic (LVTTL), or low voltage differential signalling (LVDS).

Integrated into the inputs are 50ohm termination resistors for added board space savings.

The use of RSECL provides an output voltage swing of 400mV - as opposed to 800mV in traditional ECL applications - for reduced power consumption.

The end result is an ideal blend of unequalled performance at a total system cost well below the capabilities of alternative platforms.

The NBSG111 is currently offered in a 49-pin flip-chip ball grid array (FCBGA) and priced at $32.48 per unit in 10,000 unit quantities.

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