LM4731TA/NOPB National Semiconductor, LM4731TA/NOPB Datasheet
LM4731TA/NOPB
Specifications of LM4731TA/NOPB
*LM4731TA/NOPB
LM4731TA
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LM4731TA/NOPB Summary of contents
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... Connection Diagrams Plastic Package Top View Non-Isolated Package Order Number LM4731TA See NS Package Number TA15A © 2003 National Semiconductor Corporation Key Specifications j Output Power into 4Ω or 8Ω, 10% THD+N j THD+N at 1kHz with into 8Ω j Mute Attenuation ...
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Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit www.national.com 2 20060353 ...
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... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications Supply Voltage | Common Mode Input Voltage Differential Input Voltage Output Current Power Dissipation (Note 3) ESD Susceptability (Note 4) ESD Susceptability (Note 6) ...
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Electrical Characteristics The following specifications apply for V 25˚C. Symbol Parameter V Mute Low Input Voltage IL V Mute High Input Voltage IH Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified. Note 2: ...
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Single Supply Application Circuit FIGURE 3. Single Supply Amplifier Application Circuit Note: * Optional components dependent upon specific design requirements. Auxiliary Amplifier Application Circuit FIGURE 4. Special Audio Amplifier Application Circuit 20060306 20060307 5 www.national.com ...
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External Components Description ( See Figures Components 1 R Prevents currents from entering the amplifier’s non-inverting input which may be passed through to the load B upon power down of the system due to the low ...
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Typical Performance Characteristics Supply Current vs Supply Voltage THD+N vs Frequency ± 18V 1W/Channel 4Ω, 80kHz BW L THD+N vs Output Power ± 18V 4Ω, 80kHz BW L ± 20060368 THD+N vs Frequency ...
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Typical Performance Characteristics Output Power vs Supply Voltage f = 1kHz 4Ω, 80kHz BW L Power Dissipation vs Output Power 1% THD (max 4Ω, 80kHz BW L Crosstalk vs Frequency ± 18V 10W, O ...
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Typical Performance Characteristics Mute Attenuation vs Mute Pin Voltage ± 22V 1W 8Ω, 80kHz BW L Supply Current vs Standby Pin Voltage ± 22V (Continued) Standby Attenuation vs 20060360 20060367 9 Standby Pin Voltage ± ...
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Application Information MUTE MODE By placing a logic-high voltage on the mute pins, the signal going into the amplifiers will be muted. If the mute pins are left floating or connected to a logic-low voltage, the amplifi- ers will be ...
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Application Information These instabilities can be eliminated through multiple by- passing utilizing a large tantalum or electrolytic capacitor (10 µF or larger) which is used to absorb low frequency varia- tions and a small ceramic capacitor (0.1 µF) to prevent ...
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Application Information To achieve a transient free power-up and power-down, the voltage seen at the input terminals should be ideally the same. Such a signal will be common-mode in nature, and will be rejected by the LM4731. In Figure 3, ...
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Application Information (Continued) FIGURE 6. Reference PCB Schematic 13 20060355 www.national.com ...
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Application Information LM4731 REFERENCE BOARD ARTWORK Composite View Top Layer www.national.com (Continued) 20060356 20060358 14 Silk Screen 20060357 Bottom Layer 20060359 ...
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Application Information Symbol Value 47kΩ IN1 IN2 1kΩ 20kΩ 1kΩ 4.7Ω SN1 SN2 R 2.7Ω ...
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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 ...