A 6.13 μw and 96 dB CMOS exponential generator

In this brief, a new low-voltage CMOS circuit to produce current-mode exponential characteristics is proposed. MOSFET transistors in weak-inversion region and translinear principle for the temperature cancellation were used. The functionality of the proposed design confirmed with 0.35 μm CMOS process technology using 0.75~V supply voltage. Results demonstrate the theoretical analysis and verify the efficiency of the proposed structure compared with previously reported designs. Around 96 linear-in-dB output current range is achieved with 0.5~dB linearity error over normalized input range from-5.75 to 5.75. The maximum deviation in the output current is 1.27 and 3.35~dB due to 100 °C temperature variations and 10% supply voltage fluctuation, respectively.