Circuito integrado duplo amplificador operacional com entradas J-FET Equivalente/substituto direto do TL072. Datasheet: https://www.njr.com/electronic_device/PDF/NJM072C_NJM072CA_NJM074C_NJM074CA_NJM082C_NJM082CA_NJM084C_NJM084CA_E.pdf
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