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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

型号	DS	厂牌	批号	数量	地区	采购
OP07CP		TI	198922	20	德国	要求报价
OP07CP		TI	199944	116	德国	要求报价
OP07CP		TI	200328	39	德国	要求报价
OP07CP		TI	200545	26	德国	要求报价
OP07CP		TI	200915	31	德国	要求报价
OP07CP		TI	201523	15	德国	要求报价
OP07CP		TI	2024+	32870	中国	要求报价
OP07CP		TI	2021+	1814	中国	要求报价
OP07CP		TI	2019+	4500	中国	要求报价
OP07CP		TI	-	47	台湾	要求报价
OP07CP		TI	-	989	日本	要求报价
OP07CP		TI	2021+	95903	中国	要求报价
OP07CP		TI	2023+	10000	中国	要求报价
OP07CP		TI	2000+	8	以色列	要求报价
OP07CP		TI	2021	2743	中国	要求报价
OP07CP		TI	2021	510	日本	要求报价
OP07CP		TI	2010+	7	中国	要求报价
OP07CP		TI	201519+	5	中国	要求报价
OP07CP		TI	-	57000	中国	要求报价
OP07CP		TI	-	5000	中国	要求报价
OP07CP		TI	2001+	9	西班牙	要求报价

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