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A new current-mode sense amplifier for low-voltage low-power SRAM

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2 Author(s)
Jinn-Shyan Wang ; Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan ; Hong-Yu Lee

A new current-mode sense amplifier is proposed and it can be used in the design of a low-voltage low-power SRAM for ASIC applications. In the new current-mode sense amplifier a modified current-conveyor is used to prevent the pattern dependent problem which is overlooked in the previous designs. Simulation results show the conventional circuits will fail and the new circuit can work if VDD=1.5 V and an industrial 0.35 μm CMOS technology is used. Power consumption of the new circuit with VDD=1.5 V is only 6%~39% of the conventional circuits running at VDD=2.0 V. A 128×8 SRAM using the new circuit for VDD=2.0 V in a 0.6 μm CMOS technology is also designed and successfully applied in an 8-bit low-power microcontroller

Published in:

ASIC Conference 1998. Proceedings. Eleventh Annual IEEE International

Date of Conference:

13-16 Sep 1998