Fujitsu Launches PLL For Mobile Products; Develops Standard Cells/Arrays For SOC Designs
San Jose, CA-based Fujitsu Microelectronics Inc. (FMI) has released the next member in its SL series of phase-locked loops (PLLs). The MB15U36 dual PLL filter can be used in a variety of wireless applications, including GSM, CDMA, TDMA, PCS, and ISM systems.
The MB15U36 is a serial input frequency synthesizer with on-chip 2 GHz and 1.2 GHz prescalers. Each of the prescalers has a selectable dual modulus division ratio of 64/65 or 28/129, which enables pulse swallow operation.
The new PLL incorporates Fujitsu's latest balanced charge pump design, providing fast tuning and low spurious noise performance. The charge pumps for both PLLs have separate supply pins, and the output currents are software-selectable with an output of ±1.0 or ±4.0 mA when operated with a +3 VDC supply.
This MB15U36 operates from +3 to +5.5 VDC, features an operating current of 6 mA, and sports a power-down current of 10 µA. It is packaged in a 20-pin plastic SSOP and is available now. Pricing begins at $1.89 each in 10,000-piece quantities.
SOC developments
Fujitsu Microelectronics has also introduced new standard cell series and macro-embedded cell array that will become key components in high-performance system-on-chip (SOC) products. The CS81 standard cell and CE81 cell array, which are developed using 0.18-µm CMOS technology, are appropriate for portable applications such as wireless communications devices and handheld computing systems.
The CE81 embedded array includes 22 million gates, while the CS81 provides more than 25 million gates. Typical gate delay at +1.8 VDC is 40 ps. Supply voltages run at a low range of between +1.1 to +1.8 VDC. Power dissipation per gate for the CE81 series is just 20 nW/MHz (at standard load, 1.8V). Power dissipation per gate for the CS81 is 15 nW/MHz.
Fujitsu Microelectronics will accept design orders for the CS81 and CE81 series in June 1999. Engineering samples will be provided by the end of July. Production volumes will become available beginning in October 1999.