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Amplifiers and Comparators

In electronics, a comparator is a device that compares two voltages or currents and outputs a digital signal indicating which is larger. It has two analog input terminals V_+\, and V_-\, and one binary digital output V_o\,. The output is ideally A comparator consists of a specialized high-gain differential amplifier. They are commonly used in devices that measure and digitize analog signals, such as analog-to-digital converters (ADCs), as well as relaxation oscillators. An operational amplifier (op-amp) has a well balanced difference input and a very high gain. This parallels the characteristics of comparators and can be substituted in applications with low-performance requirements.[4] In theory, a standard op-amp operating in open-loop configuration (without negative feedback) may be used as a low-performance comparator. When the non-inverting input (V+) is at a higher voltage than the inverting input (V-), the high gain of the op-amp causes the output to saturate at the highest positive voltage it can output. When the non-inverting input (V+) drops below the inverting input (V-), the output saturates at the most negative voltage it can output. The op-amp's output voltage is limited by the supply voltage. An op-amp operating in a linear mode with negative feedback, using a balanced, split-voltage power supply, (powered by ± VS) has its transfer function typically written as: V_{out}=A_{o} (V_1 - V_2). However, this equation may not be applicable to a comparator circuit which is non-linear and operates open-loop (no negative feedback)

Linear > Amplifiers and Comparators > OP AMP

Part No.	DS	Manufacturer	D/C	Qty	Region	Action
OPA627AU		TI	2010+	273	China	Request A Quote
OPA627AU		TI	-	15110	China	Request A Quote
OPA627AU		TI	2014+	3102	Hong Kong	Request A Quote
OPA627AU		TI	2017	2	U.S.A.	Request A Quote
OPA627AU		TI	2010+	23	South Korea	Request A Quote
OPA627AU		TI	-	3000	China	Request A Quote
OPA627AU		TI	2023+	52	Hong Kong	Request A Quote
OPA627AU		TI	2010+	265	Singapore	Request A Quote
OPA627AU		TI	-	17	Japan	Request A Quote
OPA627AU		TI	2017+	1358	Japan	Request A Quote
OPA627AU		TI	2024+	2000	China	Request A Quote
OPA627AU		TI	2023+	11582	Hong Kong	Request A Quote
OPA627AU		TI	2013+	1009	Hong Kong	Request A Quote
OPA627AU		TI	2010+	27	Japan	Request A Quote
OPA627AU		TI	2023+	3168	U.S.A.	Request A Quote
OPA627AU		TI	2023+	3026	China	Request A Quote
OPA627AU		TI	2023+	3168	South Korea	Request A Quote
OPA627AU		TI	2010+	300	China	Request A Quote
OPA627AU		TI	2021+	7800	China	Request A Quote
OPA627AU		TI	2014+	3102	China	Request A Quote
OPA627AU		TI	-	50	China	Request A Quote
OPA627AU		TI	2022+	3888	Hong Kong	Request A Quote
OPA627AU		TI	2010+	5119	China	Request A Quote
OPA627AU		TI	-	15	U.S.A.	Request A Quote
OPA627AU		TI	-	1252	China	Request A Quote

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