Practical oscillation-based test of integrated filters

Investigation of the optimum oscillation frequency value towards increasing the efficiency of OBIST approach

“…For each type of active analog filter, a proper way of making it oscillating can be found. Although the oscillation test method has been used in several works [6][7][8][21][22][23][24][25] to test active analog filters, in most cases, the feedback network and passive components were realised externally using discrete devices. The reason was to achieve high accuracy and small deviation in the oscillation frequency and the amplitude of oscillations (of faultfree oscillators).…”

“…In the oscillation-based test, a CUT is transformed into an oscillator by connecting proper feedback circuitry [2][3][4][5][6][7][8][9][10]. There is an assumption that the appropriate value of the oscillation frequency might increase the total fault coverage (FC) in the tested circuit.…”

An oscillation-based built-in test scheme with AGC loop

“…Therefore, changes of the parameters from their nominal values indicate faults in the CUT. The oscillation approach has been applied to test the digitally programmable switched-current biquadratic filters [11] and switched-capacitor filters [12][13][14]. In [15] the use of OBIT technique is proposed to test the configurable analog blocks of the Field Programmable Analog Arrays.…”

A combined oscillation, power supply current and I/sub DDQ/ testing methodology for fault detection in floating gate input CMOS operational amplifier

“…Oscillation, I DDQ and power supply current testing methods have been successfully used for fault detection in traditional analog circuits [3][4][5][6][7][8][9][10][11][12][13]. Oscillation based testing methodology has become very popular in testing of CMOS analog circuits because of its simplicity and robustness [3][4][5][6][7] where the CUT is converted into an oscillator.…”