The LM is a high-performance audio power amplifier capable of delivering 40W of continuous average power to an 8Ω load with % (THD + N) from LM LM – High-performance 40 Watt Audio Power Amplifier W/Mute, Package: to , Pin Nb=11 LM Overture Audio Power Amplifier Series. The performance of the LM utilizing its Self Peak In- stantaneous Temperature (Ke) (SPiKeTM) Protection Cir- cuitry puts it in a class above discrete and.
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The LM is a high-performance audio power amplifier. An input mute function. Output protection from a short to ground or to the. Output over-voltage protection against transients from. SPiKe protection means that these. Supply under-voltage protection, not allowing internal. The LM maintains an excellent signal-to-noise ratio of. Wide supply range 20V – 72V. Refer to the External Components Description section for a component datashee.
Typical Audio Amplifier Application Circuit. Call your local National sales rep. Distributors for availability and specifications. Operating Ratings Notes 4, 5. Common Mode Input Voltage. V or V and. Operation is guaranteed up to 60V, however, distortion may be. Power Dissipation Note 6.
LM datasheet & applicatoin notes – Datasheet Archive
ESD Susceptibility Note 7. Refer to the Thermal Considerations section for. Junction Temperature Note 8. T Package 10 seconds. Electrical Characteristics Notes 4, 5.
Satasheet Supply Voltage Note Pin 8 Open or at 0V, Mute: Instantaneous Peak Output Power. Total Harmonic Distortion Plus Noise. Total Quiescent Power Supply Current. Output Dropout Voltage Note Power Supply Rejection Ratio.
Common Mode Rejection Ratio. Open Loop Voltage Gain. All voltages are measured with respect to the GND pin pin 7unless otherwise specified.
Absolute Maximum Ratings indicate limits beyond which datashdet to the device may occur. Operating Ratings indicate conditions for which the device is. Electrical Characteristics state DC and AC ml2876 specifications under particular test conditions which. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit. For operating at case temperatures above 25? C, the device must be derated based on a ?
C maximum junction temperature and a thermal resistance. Human body model, pF discharged through a 1.
The operating junction temperature maximum is ? C, however, the instantaneous Safe Operating Area satasheet is ? Typicals are measured at 25? C and represent the parametric norm. The feedback compensation network limits the bandwidth of the closed-loop response and so the slew rate will be reduced due to the high frequency.
Without feedback compensation, the slew rate is typically larger.
V – must have lm2867 least -9V at its pin with reference datahseet ground in order for the under-voltage protection circuitry to be disabled.
The output dropout voltage is the supply voltage minus the clipping voltage. DC Electrical Test Circuit. AC Electrical Test Circuit. Single Supply Application Circuit. Refer to the External. Components Description section for a component functional description. Acts as a volume control by setting the voltage level allowed to the amplifier’s input terminals. Provides DC voltage biasing for the single supply operation and bias current for the positive input terminal.
Provides AC coupling at the input and output of the amplifier for single supply operation.
Prevents currents from entering the amplifier’s non-inverting input which may be passed through to the load. This phenomenon occurs when the supply voltages are below 1. Reduces the gain bandwidth of the amplifier at high frequencies to avoid quasi-saturation oscillations of the. The capacitor also suppresses external electromagnetic switching noise created from. Inverting input resistance to provide AC Gain in dtaasheet with R f1.
Ensures unity gain at DC. Also a low frequency pole highpass roll-off at: Feedback resistance to provide AC Gain in conjunction with Ri. At higher frequencies feedback resistance works with C f to provide lower AC Gain in conjunction with R f1 and. A high frequency pole lowpass roll-off exists at: Mute resistance set up to allow 0. Refer to the Mute Attenuation vs.
Mute Current curves in the Typical Performance Characteristics section. Mute capacitance set up to create a large time constant for datasheet and turn-off muting. Works l2m876 C SN to stabilize the output stage by creating a pole that eliminates high frequency oscillations. Works with R SN to stabilize the output stage by creating a pole that eliminates high frequency datasehet.
LM2876 PDF Datasheet浏览和下载
Provides high impedance at high frequecies so that R may decouple a highly capacitive load and reduce the. Q of the series resonant circuit due to capacitive load. Also datashewt a low impedance at low frequencies to. Provides power supply filtering and bypassing. Mute switch that mutes the music going into the amplifier when opened. Optional components dependent upon specific design requirements. Refer to the Application Information section for more information.
These two components act as low impedances to certain. Although the optional external components have specific. Please take careful note of basic amplifier compo.
The optional external components shown in Figure 2 and. One example would be the. Input Bias Current vs.
LM Datasheet National Semiconductor pdf data sheet FREE from
Max Heatsink Thermal Resistance? Maximum Power Dissipation vs Supply Voltage. The maximum heat sink thermal resistance values,? IMD 60 Hz, 4: IMD 60 Hz, 7 kHz, 4: IMD 60 Hz, 1: IMD 60 Hz, 7 kHz 1: IMD 60 Hz, 7 kHz, 1: The muting function of the LM allows the user to mute. The choice of a heat sink for a high-power audio datashest is. This is accomplished as shown. The heat sink should be chosen to. The switch when opened.