An ultra low-power dynamic translinear cardiac sense amplifier for pacemakers

In this paper, a cardiac sense amplifier, i.e. the front end of a pacemaker, based on the Dynamic Translinear (DTL) circuit technique is presented. The system consists of a voltage-to-current converter, a bandpass filter, absolute value and RMS-DC converter circuits and an event detection circuit. From simulations, it is demonstrated that the DTL technique is a good alternative to conventional sense amplifiers for intra cardiac applications since they handle the required dynamic range and perform non-linear operations at low supply voltages. The circuit operates from a 2-V supply voltage and dissipates 240nW. Keywords – Cardiac signal detection, dynamic translinear circuits, analog signal processing, integrated circuits, IECG

• Type: Conference
• Year: 2003
• Where: ISCAS
• Authors: Sandro A. P. Haddad, Sebastian Gieltjes, Richard Houben, Wouter A. Serdijn
• Keywords: Cardiac Sense Amplifier, Dynamic Translinear, ISCAS 2003, Sense Amplifiers