High-Performance CMOS Current Mirrors: Application to Linear Voltage-to-Current Converter Used for Two-Stage Operational Amplifier

• 作者: Mohamed Masmoudi Radwene Laajimi
• 来源期刊: 电路与系统(英文)
• 学科: 工学
• 关键词: Analog Circuits CURRENT Source CURRENT MIRROR Low VOLTAGE Operational TRANSCONDUCTANCE Amplifier
• 年，卷（期）: 2012,（4）
• 页码范围: 311-316
• 页数: 6页
• 分类号: TN7

摘要

This paper presents two schemes of high performance CMOS current mirror, one of them is used for operational tran-sconductance amplifier (OTA) in analog VLSI systems. The linearity, output impedance, bandwidth and accuracy are the most parameters to determine the performance of the current mirror. Here a comparison of two architectures based on same architecture of the amplifier is presented. This comparison includes: linearity, output impedance, bandwidth and accuracy. These two circuits are validated with simulation in technology AMS 0.35 μm. An operational amplifier based on the adapted current mirror is proposed. Its frequency analysis with large bandwidth is validated with the same technology.