LM R e Thin Film Resistor Network. 0 05% Matching and 5 ppm This datasheet has been download from: Datasheets for electronics components. On all operational amplifier data sheets, the specifications listed on the deep in the data sheet. .. , LM and LT with improved price/performance. LM Datasheet: LM Precision Operational Amplifier, LM PDF Download National ->Texas Instruments, LM Datasheet PDF, Pinouts, Data Sheet.
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Contact the factory for availability of devices with proven long-term stability. The trim pin pin 5 should also be guarded away from noise signals and leakages, as it has a sensitivity of 15 millivolts of DVout per microampere. Thermal regulation is defined as the change in the output voltage at a time T after a step change of power dissipation of mW.
The output has a class-B stage, so if the load current changes from sourcing to sinking, an output transient will occur. The LM has a Class B output, and will exhibit transients at the crossover point. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
Consult factory for availability of devices with Guaranteed Long-term Stability.
In Sinking mode, connect 0. Tsimshatsui, Kowloon Hong Kong Tel: A trim pin is available which permits fine-trimming of Vout, and also permits filtering to greatly decrease the output noise by adding a small capacitor 0. These pins would not be damaged by a short to ground, or by Electrostatic Discharges; however, keep them away from large transients or AC signals, as stray capacitance could couple noises into the output.
Changes in output voltage due to heating effects are covered under the specifications for Thermal Regulation and Tempco. To avoid this transient, it may be advisable to preload the output with ddatasheet few milliamperes of load to ground.
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National Semiconductor Europe Fax: Regulation is measured at constant temperature using pulse testing with a low duty cycle. Pin numbers for H, M or N packages. Its long-term stability is typically 3 to 10 ppm per hours when held satasheet Tmax, ,m607 slightly better when operated at room temperature. In some applications it may be advantageous to pre-load the output to either Vin or to ground, to avoid this crossover point.
The devices have a If the output is pulled to a positive voltage such as a 15 or a 20V, the output current will be limited, but overheating may occur. The trim scheme is such that individual resistors are cut open rather than being trimmed partially cutto avoid resistor drift caused by electromigration in the trimmed area.
Alternatively, a shield foil can be laid out on the printed circuit board, surrounding these pins and pin 5, and this guard foil can be connected to ground or to Vout, effectively acting as a guard against AC coupling and DC leakages.
However, avoid overloads at high ambient temperatures, as a prolonged short-circuit may cause the junction temperature to exceed the Absolute Maximum Temperature. The curves showing the Noise vs.
LM Datasheet(PDF) – DATASHEETBANK
The LM is suitable for limited-temperature operation. This datasheet has been downloaded from: The capacitor used should be a low-leakage type. Capacitance in the Typical Performance Characteristics section show graphically that a modest capacitance of 0. Trimming to a wider range is possible, but is not recommended as it may degrade the Tempco and the Tempco linearity at temperature extremes. The output can sink current as well as source it, but the output impedance catasheet much better for sourcing current.
LM see curve above: The device does not include a thermal shut-down circuit. Unless otherwise noted, these conditions apply: The LM is recommended for applications where the highest stability and lowest noise is required over the full military temperature range. Do not connect anything to these pins, or improper operation may result. The output is short-circuit-proof to ground.
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For example, if the output were trimmed up to Avoid such overloads for voltages higher than a 20 V, for more than 5 seconds, or, at high ambient temperatures. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. A military RETS electrical test specification is available on request. There is no guarantee that the Specified Temperatures are exactly at the minimum or maximum deviation.
Documents Flashcards Grammar checker. These pins may be cut off if desired.
This point occurs when the device is required to sink approximately 1. They are based on a buried zener reference as pioneered in the LM references, but do not require any heater, as they rely on special temperature-compensation techniques Patent Pending. These limits are not to be used to calculate outgoing quality levels. Ceramic capacitors may seem to do the job, but are not recommended for production use, as the high-K ceramics cannot be guaranteed for low leakage, and may exhibit piezo-electric effects, converting vibration or mechanical stress into excessive electrical noise.
Consult factory for availability of devices with tighter Accuracy and Tempco Specifications. The LM also provides excellent stability vs.