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Table 1 The number of the most represented circuits required

From: An analog hardware solution for compressive sensing reconstruction using gradient-based method

 Input signal circuitsBlock 1Block 2Block 3Block 4Total
Amplifiers  N3 + N2 + 3N2 NNN3 + N2 + 6N
Adders  2 N2 + 4 NN + 3N + 22 N2 + 6 N + 5
Absolute value circuits  2 N2  2 N2
Sample and hold amplifiersNN2 N1N5 N + 1
Switches N + 24 NN + 1N + 37 N + 6
Multipliers/divisions   3 N + 42 N + 15 N + 5