TY - GEN
T1 - A 0.45V-to-2.7V inductive-coupling level shifter
AU - Takatsu, Keita
AU - Niitsu, Kiichi
AU - Shidei, Tsunaaki
AU - Miura, Noriyuki
AU - Kuroda, Tadahiro
PY - 2010/12/1
Y1 - 2010/12/1
N2 - This paper presents a 0.45V-to-2.7V level shifter utilizing inductive coupling. Since primary and secondary coils are AC-coupled, each coil can be biased at arbitrary voltage independent from the conversion level difference. This enables both the primary and the secondary circuits to operate at the optimal operating region. In addition, the inductive coupling itself can provide an additional intermediate level-shifting by exploiting a coil-turn ratio between the primary and the secondary coils. As a result, wide-range voltage level conversion can be achieved. Test chip measurement in 65nm CMOS demonstrates voltage level conversion from 0.45V to 2.7V. Compared to a conventional level shifter, the primary voltage is reduced by 0.24V. In addition, the energy-delay product is reduced to 1/8.
AB - This paper presents a 0.45V-to-2.7V level shifter utilizing inductive coupling. Since primary and secondary coils are AC-coupled, each coil can be biased at arbitrary voltage independent from the conversion level difference. This enables both the primary and the secondary circuits to operate at the optimal operating region. In addition, the inductive coupling itself can provide an additional intermediate level-shifting by exploiting a coil-turn ratio between the primary and the secondary coils. As a result, wide-range voltage level conversion can be achieved. Test chip measurement in 65nm CMOS demonstrates voltage level conversion from 0.45V to 2.7V. Compared to a conventional level shifter, the primary voltage is reduced by 0.24V. In addition, the energy-delay product is reduced to 1/8.
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U2 - 10.1109/ASSCC.2010.5716591
DO - 10.1109/ASSCC.2010.5716591
M3 - Conference contribution
AN - SCOPUS:79952842279
SN - 9781424482979
T3 - 2010 IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
SP - 205
EP - 208
BT - 2010 IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
T2 - 2010 6th IEEE Asian Solid-State Circuits Conference, A-SSCC 2010
Y2 - 8 November 2010 through 10 November 2010
ER -