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《Microelectronics Journal》2014,45(8):1132-1142
Current mirror is a basic block of any mixed-signal circuit for example in an analog-to-digital converter. Its precise performance is the key requirement for analog circuits where offset is a measure issue. The key parameter which defines the performance of current mirror is its input/output impedance, input swing, and bandwidth. In this paper, a low power design of current mirror using quasi-floating gate MOS transistor is presented. The proposed current mirror boosts its output impedance in range of giga-ohm through use of regulated cascode structure followed by super-cascode. Another improvement is done in reduced input compliance voltage limits with the help of level shifter. The proposed current mirror operates well for input current range 0–700 with an input and output impedance of 160 and 8.55 respectively and high bandwidth of 4.05 . The total power consumption of the proposed current mirror is about 0.84 mW. The low power consumption with enhanced output impedance and bandwidth suits proposed current mirror for various high-speed analog designs. Performance of the presented current mirror circuit is verified using HSpice simulations on 0.18 mixed-mode twill-well technology at a supply voltage of ±0.5 V. 相似文献
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Mohammed K. Salama Ahmed M. Soliman 《AEUE-International Journal of Electronics and Communications》2009,63(6):478-482
In this paper, a 1 V, 2 GHz CMOS low-noise amplifier (LNA) was developed intended for use in the front-end receiver. The circuit is simulated in standard CMOS MOSIS. The LNA gain is 25.675 dB, noise figure (NF) is 4 dB, reverse isolation is , input return loss is , output return loss is , and the power consumption is 5.13 mA from a single 1 V power supply. One of the features of the proposed design is using a three-component cascode limitation, one of it is a transistor, to reduce the supply voltage. 相似文献
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