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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 > Audio Amplifier
Part No. Variations
- WD1500HLFS
- WD1500PIR1
- WD15010D2L2NT3
- WD15011D2C1NT3
- WD1504ADM1AMN1
- WD1504BM1CNT1
- WD1504D1L1MN2
- WD1504D1L3MN3
- WD1504D1L5MN3
- WD1504D1L6MN3
- WD1504MD2B2CM2
- WD1504MD2B6CMR
- WD1504RD1YNT1
- WD1507
- WD1508D1LB2MN3
- WD150ARD1YNT1
- WD1510AH
- WD1510E01
- WD1510F01
- WD1510PH
- WD1510PH0204
- WD1510PN
- WD1514
- WD1515ADI125MN1
- WD1515CLTCM1REV50
- WD1515DI123A1
- WD1515DI131AR
- WD1515DI132AR
- WD1515DI133AR
- WD1515DI151A1
- WD1515DI153A1
- WD1515DI155A1
- WD1515DI157A1
- WD1515DI2PRB10
- WD1515DI2PRB12
- WD1515DI2PRB18
- WD1515DI2PRB30
- WD1515DL290AL1
- WD1515MAR1
- WD1517
- WD1518
- WD1521
- WD1524
- WD1548
- WD1549TEG46F
- WD154S4VVFT28
- WD1550GKC1
- WD1554AGKC1
- WD1560D2HNT2
- WD1562
- WD1564
- WD1571
- WD15887S
- WD15P3C5AT7SAA
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