1.5-V CMOS Current Multiplier/Divider

1-V CMOS Class AB Current Mirror

A CMOS class AB current mirror whose supply requirements are restricted to one threshold voltage plus three saturation voltages is presented. The circuit uses two poly resistors and two auxiliary differential amplifiers to achieve low-voltage operation, as well as control of quiescent currents and input bias voltage. A design example is implemented in a 0.5-μm standard technology and uses a 1-V...

CMOS Current Mode Adders

We evaluated the performance of three CMOS current-mode, multivalued adder circuits in terms of area (reduced interconnect), speed, and power consumption and compared them to their binary, voltagemode counterparts. We present the simulation results of these circuits, and one new circuit which has fewer transistors than any voltage-mode full adder. Our results, however, show that while current-m...

A Sub-1-V 15-ppm/ C CMOS Band Gap Voltage Reference

A sub-1-V CMOS band gap voltage reference requiring no low threshold voltage device is introduced in this paper. In a CMOS technology with vthn=vthp=0 9 V at 0 C, the minimum supply voltage of the proposed voltage reference is 0.98 V, and the maximum supply current is 18 A. A temperature coefficient of 15 ppm/ C from 0 C to 100 C is recorded after trimming. The active area of the circuit is abo...

Current-Mode CMOS Image Sensor

This thesis presents a current-mode CMOS image sensor using lateral bipolar phototransistors (LPTs). The objective of this design is to improve the photosensitivity of the image sensor, and to provide photocurrent amplification at the circuit level. Lateral bipolar phototransistors can be implemented using a standard CMOS technology with no process modification. Under illumination, photogenerat...

Current Simulation for CMOS Circuits