A synchronous high-speed, high-accuracy, loser-take-all circuit

This paper presents an accurate current mode synchronous Loser-Take-All circuit based on a simple regenerative pair. The regenerative pair and the related resetting transistors lead to a circuit requiring only four transistors, seven for deep binary tree structures. It achieves its high speed through regenerative feedback. The basic circuit requires no current mirrors and has only parasitic losses, resulting in high accuracy. This paper also includes simulation results for a single LTA circuit with two inputs and for a sixty-four input, six-layer, binary tree circuit.