LM384N DATASHEET PDF

LM384N DATASHEET PDF

LMN/NOPB Texas Instruments Audio Amplifiers 5-W AUDIO POWER AMP datasheet, inventory, & pricing. LMN Datasheet, LMN National Semiconductor 5-Watt Audio Amplifier Datasheet, buy LMN. The LM is a power audio amplifier for consumer applica- tion In order to hold system cost to a minimum gain is internally fixed at 34 dB A unique input stage.

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This makes the device easy to use in standard p-c layout. Products conform to specifications per the terms of the Texas.

Uses range from signal tracers, workshop monitor amps to listen to distortion residuals for exampleor just a simple project for the fun of it.

It usually won’t need to be anything special, but it will usually have to be cheap and easy to build. The only thing that even approaches being critical is the bypass cap. The LM can allegedly provide up to 5W, but don’t count on it. For best thermal performance, the heatsink s should be soldered directly to the pins, and ideally will also have a good thermal bond with the top of the IC package. The bypass cap C2 is optional as well, but if you don’t include it the power supply rejection is rather poor, so anything other than a battery supply may cause some hum.

However, that varies with supply voltage and load impedance so you’ll need to assess the circuit under your operating conditions. The preferred method is to make or buy copper heatsinks that can be soldered directly to the pins. Those shown in Figure 4 will normally be acceptable, or you can fabricate something yourself that makes good thermal contact with pins 3, 4, 5 and 10, 11, It would be worthwhile to give it a very light spray with matte black paint to improve radiation.

Home – IC Supply – Link. Despite the fact that many of its functions appear to be almost identical to the LM, the two are quite different and even the 8-pin versions of each have different pinouts and are not interchangeable.

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Input stage distortion will not occur until the input signal peak exceeds mV or so, and that’s far more than necessary given the gain of the IC. These are certainly not hi-fi by any stretch of the imagination, but they are fine for a utility amplifier where a bit of distortion is unlikely to be a deal-breaker.

The input capacitor is optional – you can connect the source or pot wiper directly to the input pin if you prefer.

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. They can be run without a heatsink, but only for low power output, and care is needed to ensure the IC doesn’t overheat.

The suggested heatsink designs are shown below. The heatsink on the left is a commercial design which may be difficult to getmade by ‘Staver’ and is suggested datashewt the LM – a higher voltage version of the LM There’s no doubt that a small amp with similar performance can be made using an opamp and a couple of transistors, but the total cost and component count will be a great deal higher than will be the case with one of these ICs.

The output is short-circuit proof with internal thermal limiting. Construction of any of these amps is non-critical, datqsheet Veroboard or similar is the way that most people would build one.

LMN 데이터시트(PDF) – TI store

Production processing does not. The impedance at both inputs is 50k, set by internal resistors. Of the three types, the LM is the more popular. Quiescent Output Voltage is at One Half of the. The heatsink on the right can be fabricated from sheet copper, and I added two datashwet that can be inserted into the PCB to stabilise the heatsink against vibration. Lm384b output power into an 8 ohm load is around mW for acceptable distortion.

The IC is useful for headphones, intercoms, portable radios etc. These provide quite a bit of info, and lots of application circuits. All pin numbers refer to the pin LM and the LM You can use either input for the signal, and simply ground the unused input. These range from a Wien bridge oscillator to intercoms and various others. datashet

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It should be easy enough to fabricate a suitable heatsink if you have some sheet copper available. The LM is available in two packages – 8-pin and pin.

LM386, LM380 & LM384 Power Amplifiers

The 8-pin version of the LM is capable of around 1W, but that’s under ideal conditions. Reproduction or re-publication by any means whatsoever, whether electronic, mechanical or electro-mechanical, is strictly prohibited under International Copyright laws.

The LM is similar, but uses 50k resistors at the inputs, and has two series resistors ohms dtasheet 1. The power supply can be anything you have handy, including a battery.

LMN datasheet & applicatoin notes – Datasheet Archive

lm384h Feel free to include a nF multilayer ceramic bypass cap as close to the supply pins as possible it’s not shown in the above drawings. It’s important to understand that the LM is not an opamp, and none of the traditional opamp circuits can be applied. The negative input signal doesn’t get cut off as you might expect, because the emitter is still positive. That’s datashset of the reasons that the higher voltage ICs LM and LM have a higher gain than the LM – it’s simply to ensure full output swing before the input stage causes distortion.

Note that you cannot use aluminium because it can’t be soldered, but you may be dayasheet to use small copper tabs that are rivetted to an aluminium heatsink with heatsink compound between the two metals. Production processing does not necessarily include testing of all parameters. The package outline is standard dual-in-line.

Uses include simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio and sound projector systems. The 8-pin version is shown first. The load impedance needed is higher than any small speakers you can get, and you simply don’t build an amp using an LM if you need more than a few milliwatts.