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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 > Special Purpose Amplifiers
Вариации номера комплектующего
- DAP201
- DAP202C
- DAP202CL
- DAP202CT116
- DAP202K
- DAP202KFH
- DAP202KFHT146
- DAP202KFST146
- DAP202KFT146
- DAP202KGT146
- DAP202KIC
- DAP202KOHMFT146
- DAP202KRT146
- DAP202KRT246
- DAP202KSC59
- DAP202KT146
- DAP202KT97
- DAP202KTR
- DAP202U
- DAP202UFHT106
- DAP202UHRAT106
- DAP202UIC
- DAP202UMFHTL
- DAP202UMTL
- DAP202UT106
- DAP202UT107
- DAP202UT146
- DAP202VT106
- DAP206ASBDAP206
- DAP208
- DAP209
- DAP209S
- DAP2112K33TRG1
- DAP2127KADJTRG1
- DAP213
- DAP2138N15TRG1
- DAP215
- DAP222
- DAP222G
- DAP222M
- DAP222MGT2L
- DAP222MT2L
- DAP222T1G
- DAP222TL
- DAP222TR
- DAP222WMTL
- DAP2301MPG13
- DAP236K
- DAP236T146
- DAP236UT106
- DAP2A
- DAP2B