A novel temperature compensating method of Logarithmic Amplifier in RSSI

作者：Bai Chunfeng; Wu Jianhui

来源：2014 17th IEEE Mediterranean Electrotechnical Conference, MELECON 2014, 2014-04-13 To 2014-04-16.

DOI：10.1109/MELCON.2014.6820545

• Cadence simulation
• External components
• Low Power
• Low power application
• Master-slave configurations
• Ptat (proportional to absolute temperature)
• PTAT current
• Temperature-compensating

In this paper, we will present a new temperature compensating scheme dedicated to building CMOS Logarithmic Amplifier, which is suitable to low power applications. We propose a master-slave configuration to interrelate the PTAT (proportional to absolute temperature) coefficient of the Logarithmic Amplifier with the PTAT current, which can be obtained from the Band-gap Voltage Reference. With this method, a Low-Temperature-Coefficient Logarithmic Amplifier is obtained without any external components. This approach has been verified via Cadence simulation in TSMC 0.13μιηCMOS process. A RSSI with such a logarithmic amplifier consumes only 145μW under the supply of 1.2V. This method and the complete circuit are presented in detail with the associated results.

• 出版日期2014
• 单位东南大学