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TL052AIP Fiches technique(PDF) 55 Page - Texas Instruments |
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TL052AIP Fiches technique(HTML) 55 Page - Texas Instruments |
55 / 65 page TL05x, TL05xA, TL05xY ENHANCED-JFET LOW-OFFSET OPERATIONAL AMPLIFIERS SLOS178 – FEBRUARY 1997 55 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION input characteristics The TL05x and TL05xA are specified with a minimum and a maximum input voltage that, if exceeded at either input, could cause the device to malfunction. Because of the extremely high input impedance and resulting low bias current requirements, the TL05x and TL05xA are well suited for low-level signal processing; however, leakage currents on printed-circuit boards and sockets can easily exceed bias current requirements and cause degradation in system performance. It is good practice to include guard rings around inputs (see Figure 83). These guards should be driven from a low-impedance source at the same voltage level as the common-mode input. Unused amplifiers should be connected as grounded unity-gain followers to avoid possible oscillation. + – VO VO VO VI VI (a) NONINVERTING AMPLIFIER (b) INVERTING AMPLIFIER (c) UNITY-GAIN AMPLIFIER VI Figure 83. Use of Guard Rings noise performance The noise specifications in operational amplifier circuits are greatly dependent on the current in the first-stage differential amplifier. The low input bias current requirements of the TL05x and TL05xA result in a very low current noise. This feature makes the devices especially favorable over bipolar devices when using values of circuit impedance greater than 50 k Ω. |
Numéro de pièce similaire - TL052AIP |
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Description similaire - TL052AIP |
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