Record number :

100010

Title of article :

A low-voltage low-power analog memory cell with built-in 4-quadrant multiplication

Author/Authors :

J.A.، De Lima, نويسنده , , A.S.، Cordeiro, نويسنده ,

Issue Information :

روزنامه با شماره پیاپی سال 2003

Pages :

-190

From page :

191

To page :

0

Abstract :

An accurate switched-current (SI) memory cell and suitable for low-voltage low-power (LVLP) applications is proposed. Information is memorized as the gate-voltage of the input transistor in a tunable gain-boosting triode-transconductor. Additionally, four-quadrant multiplication between the input voltage to the transconductor regulation-amplifier (X-operand) and the stored voltage (Y-operand) is provided. A simplified 2 * 2memory array was prototyped according to a standard 0.8 (mu)m n-well CMOS process and 1.8-V supply. Measured current-reproduction error is less than 0.26% for 0.25 (mu)A <= I/sub SAMPLE/ <= 0.75 (mu)A. Standby consumption is 6.75 (mu)W per cell at I/sub SAMPLE/=0.75 (mu)A. At room temperature, leakage-rate is 1.56 nA/ms. Four-quadrant multiplier (4QM) full-scale operands are 2x/sub max/=320 mV/sub pp/ and 2y/sub max/=448 mV/sub pp/, yielding a maximum output swing of 0.9 (mu)A/sub pp/. 4QM worst-case nonlinearity is 7.9%.

Keywords :

heat transfer , natural convection , Analytical and numerical techniques

Journal title :

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II:ANALOG AND DIGITAL SIGNAL PROCESSING

Journal title :

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II:ANALOG AND DIGITAL SIGNAL PROCESSING

Serial Year :

2003

Link To Document :