LM4875MM/NOPB National Semiconductor, LM4875MM/NOPB Datasheet

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... They require few external components and operate on low supply voltages. Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit BOOMER ™ trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation Applications n GSM phones and accessories, DECT, office phones n Hand held radio n Other portable audio devices Key Specifications ...

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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature Soldering Information Vapor Phase (60 sec.) Infrared (15 sec ...

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External Components Description (Figure 1) Components 1. C Input coupling capacitor blocks DC voltage at the amplifier’s input terminals. It also creates a highpass filter i with the internal R i Information section, Selecting External Components, for an explanation of ...

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Typical Performance Characteristics THD+N vs Output Power Power Dissipation vs Load Resistance Power Derating Curve www.national.com (Continued) THD+N vs Output Power 10104210 Power Dissipation vs Output Power 10104212 Clipping Voltage vs RL 10104214 4 10104211 10104213 10104215 ...

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Typical Performance Characteristics Noise Floor Power Supply Rejection Ratio THD+N vs Frequency (Continued) Frequency Response vs 10104216 10104218 10104220 5 Input Capacitor Size 10104217 Attenuation Level vs DC-Vol Amplitude 10104219 THD+N vs Frequency 10104221 www.national.com ...

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Typical Performance Characteristics THD+N vs Frequency THD+N vs Output Power Output Power vs Load Resistance www.national.com (Continued) THD+N vs Output Power 10104222 THD+N vs Output Power 10104224 Clipping Voltage vs Supply Voltage 10104229 6 10104223 10104228 10104230 ...

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Typical Performance Characteristics Output Power vs Supply Voltage Supply Current vs Supply Voltage Application Information BRIDGE CONFIGURATION EXPLANATION As shown in Figure 1, the LM4875 consists of two opera- tional amplifiers internally. An external DC voltage sets the closed-loop gain ...

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Application Information of a single-ended amplifier. However, even with this substan- tial increase in power dissipation, the LM4875 does not require heatsinking. From Equation (2), assuming a 5V power supply and an 8Ω load, the maximum power dissipa- tion point ...

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Application Information FIGURE 3. Headphone Circuit While the LM4875 operates in bridged mode, the DC poten- tial across the load is essentially 0V. Since the HP-Sense threshold is set at 4V, even in an ideal situation, the output swing cannot ...

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Application Information an external 1kΩ - 5kΩ resistor can be placed in parallel with the internal 20kΩ resistor. The tradeoff for using this resistor is increased quiescent current. RECOMMENDED PRINTED CIRCUIT BOARD LAYOUT Figure 4 through Figure 6 show the ...

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Application Information FIGURE 7. Recommended MSOP PC board layout: component side silkscreen FIGURE 8. Recommended MSOP PC board layout: component side layout (Continued) FIGURE 9. Recommended MSOP PC board layout: 10104241 10104242 11 10104245 bottom side layout www.national.com ...

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Physical Dimensions 8-Lead (0.118" Wide) Molded Mini Small Outline Package www.national.com inches (millimeters) unless otherwise noted Order Number LM4875M NS Package Number M08A Order Number LM4875MM NS Package Number MUAO8A 12 ...

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... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...