Fujitsu Introduces Low Power Consumption PLL Frequency Synthesizer for Mobile Communication Devices

Tokyo, October 2, 2000 --- Fujitsu Limited today introduced its new UL Series of phase locked loop (PLL) frequency synthesizers (*1) for mobile communications devices (50MHz to 2.6GHz). Developed in cooperation with Kyushu Fujitsu Electronics Ltd., the UL Series comprises three models (MB15F72UL, MB25F73UL, MB15F78UL), with sales to commence today and volume shipment from November.

The PLL frequency synthesizer is an essential component of mobile terminals such as cellular phones. It generates radio waves at the frequency needed by the signal processor within the device. With worldwide cellular phone shipments expected to reach 400 million units in fiscal 2000 and demand increasing more and more for installed PLL synthesizers, the new UL Series is a timely addition to Fujitsu's product lineup.

Adopting Fujitsu's advanced U-ESBIC4 (*2) BiCMOS process and newly designed circuits, the UL Series boasts high speed and among the world's lowest power consumption level. The MB15F78UL consumes only 4.5mA at 2.7 volts, or 20% less than the previous model (MB15F78SP). Moreover, by designing new independent circuits, Fujitsu was able to reduce the lock-up time (*3) by approximately 20%.

Each model in the UL Series optimizes the power consumption level for mobile telephones with operating frequencies ranging from 50HZ to 2.6GHZ.

Use of the new thin package BCC(*4)-20 realizes a package 0.60 mm thinner than before, reducing total area by 25%.

Fujitsu has been a global technology leader in PLL frequency synthesizers and, according to the company's estimates, is the global market leader with a share of about 40%. Fujitsu will continue to offer a variety of PLL synthesizers for growing markets in wireless frequency band products and Internet-related devices. The company has set a sales target of 8 million units per month for the UL Series (all three models combined) following commencement of volume shipping in November.

Product Highlights

1. Supports wide range of operating frequencies to meet a variety of cellular phone standards (PDC, GSM/DCS, W-CDMA and others)
   • MB15F72UL (1.3 GHz/0.35 GHz, 2.5 mA)
   • MB15F73UL (2.0GHz/0.6 GHz, 3.2 mA)
   • MB15F78UL (2.6 GHz/1.2 GHz, 4.5mA)
2. Extra low power consumption: 4.5 mA standard source (2.6 GHz band, Vcc = 2.7 V)
3. Reduced lock-up time: 20% faster than previous models
4. Guarantees low-power voltage operation; Vcc = 2.4V-3.6V
5. Stable charge pump circuit capable of dual current switching through serial data transfer; +/-1.5 mA, +/- 6.0 mA
6. High sensitivity fin inputs: Vfin (min)= -15dBm (500 ohm system)
7. Interchangeable with the previous PLL (SP Series): comes with the same pin layout
8. Thin, Small package : TSSOP (*5)-20-pin and 0.60 mm ultra-thin package compatible with BCC 20-pin.

Terminology:

1. PLL (Phase locked loop) Detects differences in the output frequency, the input, and the frequency of the standard oscillator. It controls the feedback circuit, and synchronizes the frequency of the oscillator.
2. U-ESBIC (U-groove isolated emitter base self-aligned BiCMOS)4: Name of the process which incorporates Fujitsu's BiCMOS technology to self-adjust the emitter and the base. It has the advantages of both bipolar's high frequency and the CMOS component's low-power consumption.
3. Lock-up time: Preparation time needed to get the desired output frequency.
4. BCC (bump chip carrier): Ultra-small package developed for mobile devices. The surface area of the package is 50% less than that of the SSOP (*6).
5. TSSOP (Thin Shrink Small Outline L-Leaded Package): A type of package with 1.20 mm or less height.
6. SSOP (Shrink Small Outline L-Leaded Package): A type of package with 1.25mm or less height.

* All company / product names mentioned may be trademarks or registered trademarks of their respective holders and are used for identification purpose only.

About Fujitsu Limited
Fujitsu Limited (TSE: 6702) is a leading provider of Internet- based information technology solutions for the global marketplace. Comprising over 500 group companies and affiliates worldwide -- including ICL, Amdahl and DMR Consulting -- it had consolidated revenues of 5.26 trillion yen (US$49.6 billion) in the fiscal year ended March 31, 2000. Fujitsu's pace-setting technologies, world- class computing and telecommunications platforms, and global corps of over 60,000 systems and services experts make it uniquely positioned to unleash the infinite possibilities of the Internet to help its customers succeed. Altogether, the Fujitsu Group has 188,000 employees and operations in over 100 countries.
Internet: http://www.fujitsu.com/

Fujitsu: The Possibilities Are Infinite

Press contacts:	Customer contacts:
Chiaki Kuwahara, Bob Pomeroy, Nick Hayashi  Fujitsu Limited, Public Relations  Tel: +81-3-3215-5236 (Tokyo)  Fax: +81-3-3216-9365  E-mail: pr@hq.fujitsu.co.jp	Fujitsu Limited, LSI Products Group  Tel: +81-42-532-2132  Fax: +81-42-532-2414  E-mail: query@sales.ed.fujitsu.co.jp