Transimpedance amplifier with differential photodiode current sensing

This paper presents a balanced receiver structure suitable for wireless infrared data communications. The receiver provides a fixed photodiode bias voltage with the use of a regulated cascode input stage. Together with an active feedback loop used to eliminate dc photocurrents, the receiver implements ac coupling without the need for matching capacitors. Differential sensing of the photodiode current improves sensitivity. Designed for a 0.35

• Type: Conference
• Year: 1999
• Where: ISCAS
• Authors: B. Zand, K. Phang, D. A. Johns
• Keywords: Balanced Receiver Structure, Hardware, ISCAS 1999, Photodiode Bias Voltage, Receiver Implements Ac