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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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LT1222 Fiches technique(PDF) 6 Page - Linear Technology |
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LT1222 Fiches technique(HTML) 6 Page - Linear Technology |
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6 / 12 page  6 LT1222 1222fc TYPICAL PERFORMANCE CHARACTERISTICS Large Signal, AV = 10 Small Signal, AV = 10 RF = 909Ω RG = 100 Ω LT1222 • TPC19 LT1222 • TPC20 Large Signal, AV = 10, CL = 10,000pF LT1222 • TPC21 Small Signal, AV = – 10 LT1222 • TPC22 LT1222 • TPC23 LT1222 • TPC24 Large Signal, AV = – 10 Small Signal, AV = – 10, CL = 1,000pF RF = 909 Ω RG = 100Ω RF = 1k RG = 100Ω (75) RF = 1k RG = 100 Ω (75) VS = ±15V VIN = 20mV f = 5MHz VS = ±15V VIN = 20mV f = 5MHz VS = ±15V VIN = 2V f = 2MHz VS = ±15V VIN = 2V f = 2MHz APPLICATIONS INFORMATION The LT1222 is stable in noise gains of 10 or greater and may be inserted directly into HA2520/2/5, HA2541/2/4, AD817, AD847, EL2020, EL2044 and LM6361 applica- tions, provided that the nulling circuitry is removed and the amplifier configuration has a high enough noise gain. The suggested nulling circuit for the LT1222 is shown in the following figure. Layout and Passive Components The LT1222 amplifier is easy to apply and tolerant of less than ideal layouts. For maximum performance (for ex- ample, fast settling time) use a ground plane, short lead lengths and RF-quality bypass capacitors (0.01 μFto0.1μF). For high drive current applications use low ESR bypass capacitors (1 μF to 10μF tantalum). Sockets should be avoided when maximum frequency performance is re- quired. For more details see Design Note 50. Feedback resistors greater than 5k are not recommended because a pole is formed with the input capacitance which can cause peaking or oscillations. Stray capacitance on Pin 5 should be minimized. Bias current cancellation circuitry is em- ployed on the inputs of the LT1222 so the input bias current and input offset current have identical specifications. For this reason, matching the impedance on the inputs to reduce bias current errors is not necessary. Offset Nulling LT1222 • AI01 V+ V– 0.1 μF 0.1 μF 5k 3 2 4 7 6 8 1 LT1222 + – RF = 909Ω RG = 100 Ω VS = ±15V VIN = 2V f = 20kHz RF = 1k RG = 100Ω (75) VS = ±15V VIN = 15mV f = 500kHz |
Numéro de pièce similaire - LT1222_15 |
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Description similaire - LT1222_15 |
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