抄録
This paper describes a logarithmic compression ADC using a subranging TDC and the transient response of a comparator. We utilized the settling time of the comparator for a logarithmic compression instead of a logarithmic amplifier. The settling time of the comparator is inversely proportional to the logarithm of an input voltage. In the proposed ADC, an input voltage is converted into a pulse whose width represents the settling time of the comparator. Subsequently, the TDC converts the pulse width into a binary code. The supply voltage of the proposed ADC can be reduced more than a conventional logarithmic ADC because an analog to digital conversion takes place in the time domain. We confirmed through a 0.18-μm CMOS circuit simulation that the proposed ADC achieves a resolution of 11 bits, a sampling rate of 20 MS/s, a dynamic range of 59 dB and a power consumption of 9.8 mW at 1.5 V operation.
| 言語 | English |
|---|---|
| ページ | 359-362 |
| Number of pages | 4 |
| ジャーナル | IEICE Transactions on Electronics |
| Volume | E100C |
| 号 | 4 |
| DOIs | |
| State | Published - 2017 4 1 |
| 外部発表 | Yes |
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Keywords
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
これを引用
A logarithmic compression ADC using transient response of a comparator. / Inagaki, Yuji; Sugimori, Yusaku; Ioka, Eri; Matsuya, Yasuyuki.
：: IEICE Transactions on Electronics, 巻 E100C, 番号 4, 01.04.2017, p. 359-362.研究成果: ジャーナルへの寄稿 › Article
}
TY - JOUR
T1 - A logarithmic compression ADC using transient response of a comparator
AU - Inagaki,Yuji
AU - Sugimori,Yusaku
AU - Ioka,Eri
AU - Matsuya,Yasuyuki
PY - 2017/4/1
Y1 - 2017/4/1
N2 - This paper describes a logarithmic compression ADC using a subranging TDC and the transient response of a comparator. We utilized the settling time of the comparator for a logarithmic compression instead of a logarithmic amplifier. The settling time of the comparator is inversely proportional to the logarithm of an input voltage. In the proposed ADC, an input voltage is converted into a pulse whose width represents the settling time of the comparator. Subsequently, the TDC converts the pulse width into a binary code. The supply voltage of the proposed ADC can be reduced more than a conventional logarithmic ADC because an analog to digital conversion takes place in the time domain. We confirmed through a 0.18-μm CMOS circuit simulation that the proposed ADC achieves a resolution of 11 bits, a sampling rate of 20 MS/s, a dynamic range of 59 dB and a power consumption of 9.8 mW at 1.5 V operation.
AB - This paper describes a logarithmic compression ADC using a subranging TDC and the transient response of a comparator. We utilized the settling time of the comparator for a logarithmic compression instead of a logarithmic amplifier. The settling time of the comparator is inversely proportional to the logarithm of an input voltage. In the proposed ADC, an input voltage is converted into a pulse whose width represents the settling time of the comparator. Subsequently, the TDC converts the pulse width into a binary code. The supply voltage of the proposed ADC can be reduced more than a conventional logarithmic ADC because an analog to digital conversion takes place in the time domain. We confirmed through a 0.18-μm CMOS circuit simulation that the proposed ADC achieves a resolution of 11 bits, a sampling rate of 20 MS/s, a dynamic range of 59 dB and a power consumption of 9.8 mW at 1.5 V operation.
KW - ADC
KW - Latched comparator
KW - Logarithmic compression
KW - Settling time
KW - Subranging
KW - TDC
UR - http://www.scopus.com/inward/record.url?scp=85017384589&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85017384589&partnerID=8YFLogxK
U2 - 10.1587/transele.E100.C.359
DO - 10.1587/transele.E100.C.359
M3 - Article
VL - E100C
SP - 359
EP - 362
JO - IEICE Transactions on Electronics
T2 - IEICE Transactions on Electronics
JF - IEICE Transactions on Electronics
SN - 0916-8524
IS - 4
ER -