A 765mW high-voltage switching ADSL line-driver
| Autor: | V. De Gezelle, Jan Doutreloigne, A. Van Calster |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Engineering
Power-added efficiency business.industry Amplifier Line driver Electrical engineering Differential amplifier High voltage Condensed Matter Physics Electronic Optical and Magnetic Materials CMOS Hardware_INTEGRATEDCIRCUITS Materials Chemistry Electronic engineering Linear amplifier Electrical and Electronic Engineering business Pulse-width modulation |
| Zdroj: | Solid-State Electronics. 49:1947-1950 |
| ISSN: | 0038-1101 |
| DOI: | 10.1016/j.sse.2005.08.006 |
| Popis: | With the increasing popularity of ADSL-modems, there is a stringent need to develop highly efficient line-drivers. Currently most line-drivers use linear amplifiers, such as class AB. Due to the nature of the DMT-encoded signal, the efficiency of such amplifiers is limited. Another issue is the transformer turns ratio and the resulting supply voltage of the amplifier. In general, a high-voltage supply is needed. In this paper, a high-voltage switching differential amplifier using a 50 V supply is described. The maximum efficiency into a matched load yields over 40%, with an efficiency of 13.1% for a full downstream signal while maintaining a minimum MTPR of 40 dB. The circuit is processed in a 100 V, 0.7 μm technology. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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