LM4865M National Semiconductor, LM4865M Datasheet
LM4865M
Specifications of LM4865M
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LM4865M Summary of contents
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... Headphone amplifier mode n “Click and pop” suppression n Shutdown control when volume control pin is low n Thermal shutdown protection Small Outline Package (SO) Mini Small Outline Package (MSOP) Order Number LM4865M, LM4865MM See NS Package Number M08A, MUA08A 10102536 DS101025 October 2002 750mW (typ) 1W (typ) 0.7µ ...
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Typical Application (Numbers are specific to the micro SMD package) www.national.com FIGURE 1. Typical Audio Amplifier Application Circuit 2 10102501 ...
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... 200mVrms 8Ω, C RIPPLE L 1.0 µ 1kHz ≥ 4.0V, (80 Gain with V PIN4 ≤ 0.9V, (18 Gain with V PIN4 − T )/θ or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4865M ≤ T −40˚C ≤ MAX A 2.7V ≤ 25˚C. A LM4865 Min Typical ...
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External Components Description (Figure 1 ) Components 1. C Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. It also creates a i highpass filter with the internal R 1/(2π Refer to the section, ...
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Typical Performance Characteristics THD+N vs Output Power Power Dissipation vs Load Resistance Power Derating Curve (Continued) THD+N vs Output Power 10102510 Power Dissipation vs Output Power 10102512 10102514 5 10102511 10102513 Clipping Voltage vs RL 10102515 www.national.com ...
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Typical Performance Characteristics Noise Floor Power Supply Rejection Ratio THD+N vs Frequency www.national.com (Continued) Frequency Response vs Input Capacitor Size 10102516 Attenuation Level vs 10102518 THD+N vs Frequency 10102520 6 10102517 DC-Vol Amplitude 10102519 10102521 ...
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Typical Performance Characteristics THD+N vs Frequency THD+N vs Output Power Output Power vs Load Resistance (Continued) THD+N vs Output Power 10102522 THD+N vs Output Power 10102524 Clipping Voltage vs Supply Voltage 10102529 7 10102523 10102528 10102530 www.national.com ...
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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 LM4865 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 LM4865 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 voltage applied to the HP-Sense pin (pin 3) at approximately 50mV. This 50mV enables the LM4865 and places it in bridged mode operation. While the LM4865 operates in bridged mode, the DC poten- tial across the load is ...
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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 micro SMD PC board layout: component side silkscreen FIGURE 8. Recommended micro SMD PC board layout: component side layout www.national.com (Continued) FIGURE 9. Recommended micro SMD PC board layout: 10102541 FIGURE 10. Recommended micro SMD ...
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Application Information (Continued) FIGURE 11. Recommended micro SMD PC board 13 10102545 layout: bottom side layout www.national.com ...
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... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Order Number LM4865M NS Package Number M08A 14 ...
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... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 8-Lead (0.118’ Wide) Molded Mini Small Outline Package Order Number LM4865MM NS Package Number MUAO8A 15 www.national.com ...
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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 ...