A VLSI Implementation of Rank-Order Searching Circuit Employing a Time-Domain Technique

Table 2

Performance comparison.

Design parameter	Dung and Lin [2]	Poikonen and Paasio [5]	Nguyen et al. [7]	This work
Approach	Digital, bit-sliced	Analog current mode	Digital, time domain	Analog, time domain
Technology	0.35 𝜇m	0.18 𝜇m	0.35 𝜇m	0.18 𝜇m
Function	9-input ROF	9-input ROF	16-input ROF	8-input rank-order searching
Core size	1405 × 1449 𝜇m^2	6 × 13 𝜇m^2	75 × 195 𝜇m^2	65 × 91 𝜇m^2
Power	N/A	0.1 mW	0.44 mW	0.132 mW
Latency	21.5 ns (simulation)	50 ns	3.76 𝜇s	2.43 𝜇s
Precision	8 bit	Error: 2%-3%	8 bit	8 bit