LM4858MM National Semiconductor, LM4858MM Datasheet
LM4858MM
Specifications of LM4858MM
Related parts for LM4858MM
LM4858MM Summary of contents
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... LM4858LD 4Ω BTL n LM4858MM 4Ω BTL n LM4858MM,LD 8Ω BTL n LM4858MM,LD 8Ω LM4858MM,LD 32Ω THD+N at 1kHz, 95mW into 32Ω Single Supply Operation n Shutdown Current Features n Mono 1.5W BTL or stereo 300mW output n Logic controlled headphone sense n “Click and pop” suppression circuitry n No bootstrap capacitors required ...
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Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit www.national.com 2 20064731 ...
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... L THD+N = 1%; LM4858MM BTL Mode 8Ω L THD+N = 1%; LM4858MM Mode 8Ω L THD+N = 1%; LM4858MM Mode 32Ω L THD+N = 1%; LM4858MM, LD SHUTDOWN, HP-IN SHUTDOWN, HP-IN SE Mode 32Ω 1kHz L 3 194˚C/W 52˚C/W 56˚C/W 4.3˚C/W (Note 2) −40˚C ≤ to 85˚C 2.4V ≤ V ≤ 5.5V ...
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Electrical Characteristics The following specifications apply for V Symbol Parameter I Supply Current DD I Shutdown Current SD V Output Offset Voltage OS P Output Power O V Input Voltage High IH V Input Voltage Low IL Electrical Characteristics The ...
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External Components Description See Figure 1. Components 1. R Inverting input resistance which sets the closed-loop gain in conjunction with R i high pass filter with Input coupling capacitor which blocks the DC voltage at the amplifier’s ...
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Typical Performance Characteristics LD Specific Characteristics LM4858LD Power Dissipation vs Output Power Typical Performance Characteristics THD+N vs Frequency THD+N vs Frequency www.national.com (Continued) Power Derating Curve 200647A9 20064763 20064765 6 LM4858LD 200647B0 THD+N vs Frequency 20064764 THD+N vs Frequency 20064766 ...
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Typical Performance Characteristics THD+N vs Frequency THD+N vs Frequency THD+N vs Output Power (Continued) THD+N vs Frequency 20064767 THD+N vs Output Power 20064739 THD+N vs Output Power 20064741 7 20064768 20064740 20064742 www.national.com ...
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Typical Performance Characteristics THD+N vs Output Power THD+N vs Output Power THD+N vs Output Power www.national.com (Continued) THD+N vs Output Power 20064743 THD+N vs Output Power 20064745 Output Power vs Load Resistance 20064747 8 20064744 20064746 20064748 ...
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Typical Performance Characteristics Output Power vs Load Resistance Output Power vs Supply Voltage Power Dissipation vs Output Power (Continued) Output Power vs Supply Voltage 20064749 Dropout Voltage vs Supply Voltage 20064771 Power Dissipation vs Output Power 20064755 9 20064769 20064772 ...
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Typical Performance Characteristics Power Derating Curve Noise Floor Supply Current vs Supply Voltage www.national.com (Continued) 20064757 Open Loop Frequency Response 20064759 Power Supply Rejection Ratio 20064761 10 Channel Separation 20064780 20064762 20064760 ...
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Typical Performance Characteristics Application Information BRIDGED AND SINGLE-ENDED OPERATION As shown in Figure 1, the LM4858 contains three operational amplifiers (A1-A3). These amplifiers can be configured for SE or BTL modes. In the SE mode, the LM4858 operates as a ...
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Application Information amplifier’s closed-loop gain without causing excessive out- put signal clipping, please refer to the Audio Power Ampli- fier Design section. A bridge configuration, such as the one used in LM4858, also creates a second advantage over single-ended amplifi- ...
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Application Information The LM4858’s unity-gain stability allows a designer to maxi- mize system performance. The LM4858’s gain should be set no higher than necessary for any given application. A low gain configuration maximizes signal-to-noise performance and minimizes THD+N. However, a ...
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Application Information decreases with increasing load current. Reduced supply voltage causes decreased headroom, output signal clipping, and reduced output power. Even with tightly regulated sup- Demonstration Board Layout www.national.com plies, trace resistance creates the same effects as poor (Continued) supply ...
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Demonstration Board Layout FIGURE 4. Recommended MM PC Board Layout: (Continued) Bottom-Side Layout 15 200647B4 www.national.com ...
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... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 10-Lead Mini SOIC, 118 Mil Wide, .5mm Pitch PKG Order Number LM4858MM NS Package Number MUB10A 16 ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...