Voltage Mode Pulse Width Modulator Using Single Operational Transresistance Amplifier

Table 1

Comparison between the proposed and the previously reported works.

References	no. of active components	No. of passive components	Carrier signal type	Electronic; tunability
[4]	Single CC-II, two op-amps	Single capacitor, three resistors	Triangular	No
[6]	Single op-amp	Single capacitor, three resistors	Exponential	No
[7]	(i) Two OTAs, an inverter, and a MOS switch	(i) Single capacitor, single resistor	(i) Sawtooth	Yes
	(ii) Four OTAs and an inverter	(ii) Single capacitor, single resistor	(ii) Triangular	Yes
[8]	Three OTAs	Single capacitor, two resistors	Triangular	Yes
Proposed	Single OTRA	Single capacitor, three resistors	Exponential	No