Design of Current Mirror and Temperature Effect with Compensation Technique
Praween Kumar Sinha, Ramakanta Choudhury and Umakanta Choudhury
The paper intends to reduce the temperature of current mirror , the design of current mirror and temperature effect with compensation technique. In present day high performance analog digital and power electronics systems, such as cell phone, FPGA and other digital and analog circuits it required stable current reference for proper operation. A reliable current mirror should be dependent of temperature, supply voltage and process variation is necessary. Here the first order temperature compensation is to add proportional to absolute temp (PTAT) current with an inversely proportional to absolute temperature (ITAT) current. In this the current which is obtained could slow a much slower variation compared to original PTAT or ITAT current. Temperature dependent analysis to achieve better performance by reducing the temperature using compensation technique has been carried out. In many analog circuit applications, The performance of the current mirror focuses on the high accuracy, high out put impedance, wide output voltage range, wide current range and fast current switching time.
Keywords: Mosfet, Current mirror, Compansation technic