| Presentation | 1998/1/23 High Speed Oversampling HEMT AD Converter : 5GHz ΣΔ Analog to Digital Converter with Polarity Alternating Feedback Comparator Takumi Miyashita, Alfredo Olmos, Mizuhisa Nihei, Yuu Watanabe, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We designed and fabricated the 5GHz oversampling, 100MHz band-width continuous time second order ΣΔ analog to digital converter (ADC) using 0.4μm InGaP/InGaAs enhancement and depletion mode high electron mobility transistor (E/D HEMT) technology. We propose the polarity alternating feedback (PAF) technique to enhance the sampling frequency and have applied it in the ADC circuit design. The fabricated ADC shows a signal to noise ratio (SNR) of 43dB (7.3 bits) under a differential clock of 4.9GHz with 400mW of power dissipation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | compound-semiconductor / over-sampling / AD-converter / mobile-communication |
| Paper # | ICD97-217 |
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| Conference Information | |
| Committee | ICD |
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| Conference Date | 1998/1/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Integrated Circuits and Devices (ICD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High Speed Oversampling HEMT AD Converter : 5GHz ΣΔ Analog to Digital Converter with Polarity Alternating Feedback Comparator |
| Sub Title (in English) | |
| Keyword(1) | compound-semiconductor |
| Keyword(2) | over-sampling |
| Keyword(3) | AD-converter |
| Keyword(4) | mobile-communication |
| 1st Author's Name | Takumi Miyashita |
| 1st Author's Affiliation | Fujitsu Laboratories Ltd.() |
| 2nd Author's Name | Alfredo Olmos |
| 2nd Author's Affiliation | Sao Paulo University |
| 3rd Author's Name | Mizuhisa Nihei |
| 3rd Author's Affiliation | Fujitsu Laboratories Ltd. |
| 4th Author's Name | Yuu Watanabe |
| 4th Author's Affiliation | Fujitsu Laboratories Ltd. |
| Date | 1998/1/23 |
| Paper # | ICD97-217 |
| Volume (vol) | vol.97 |
| Number (no) | 482 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |