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LM4700 Dataheets PDF



Part Number LM4700
Manufacturers National Semiconductor
Logo National Semiconductor
Description Overture Audio Power Amplifier
Datasheet LM4700 DatasheetLM4700 Datasheet (PDF)

LM4700 Overture Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes March 1998 LM4700 Overture™ Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes General Description The LM4700 is an audio power amplifier capable of delivering typically 30W of continuous average output power into an 8Ω load with less than 0.1% (THD + N). The LM4700 has an independent smooth transition fade-in/ out mute and a power conserving standby mode which can.

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LM4700 Overture Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes March 1998 LM4700 Overture™ Audio Power Amplifier Series 30W Audio Power Amplifier with Mute and Standby Modes General Description The LM4700 is an audio power amplifier capable of delivering typically 30W of continuous average output power into an 8Ω load with less than 0.1% (THD + N). The LM4700 has an independent smooth transition fade-in/ out mute and a power conserving standby mode which can be controlled by external logic. The performance of the LM4700, utilizing its Self Peak Instantaneous Temperature (˚Ke) (SPiKe™) Protection Circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe Protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks. Key Specifications n THD+N at 1 kHz at continuous average output power of 25W into 8Ω: 0.1% (max) n THD+N from 20 Hz to 20 kHz at 30W of continuous average output power into 8Ω: 0.08% (typ) n Standby current: 2.1 mA (typ) Features n n n n n SPiKe Protection Minimal amount of external components necessary Quiet fade-in/out mute function Power conserving standby-mode Isolated 11-lead TO-220 package Applications n Component stereo n Compact stereo Typical Application Connection Diagram Isolated Plastic Package DS012369-2 Top View Order Number LM4700TF See NS Package Number TF11B DS012369-1 *Optional components dependent upon specific design requirements. Refer to the External Components Description section for a component functional description. FIGURE 1. Typical Audio Amplifier Application Circuit SPiKe™ Protection and Overture™ are trademarks of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS012369 www.national.com Absolute Maximum Ratings (Notes 4, 5) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage |VCC| + |VEE| (No Signal) Supply Voltage |VCC| + |VEE| (with Input and Load) Common Mode Input Voltage Differential Input Voltage Output Current Power Dissipation (Note 6) ESD Susceptibility (Note 7) 66V 64V (VCC or VEE) and |VCC| + |VEE| ≤ 60V 60V Internally Limited 62.5W 2000V Junction Temperature (Note 8) Thermal Resistance θJC (Note 14) θJA Soldering Information TF Package (10 sec.) Storage Temperature 150˚C 2˚C/W 43˚C/W 260˚C −40˚C ≤ TA ≤ +150˚C Operating Ratings (Notes 4, 5) Temperature Range TMIN ≤ TA ≤ TMAX Supply Voltage |VCC| + |VEE| (Note 1) −20˚C ≤ TA ≤ +85˚C 20V to 64V Electrical Characteristics (Notes 4, 5) The following specifications are for VCC = +28V, VEE = −28V with RL = 8Ω, unless otherwise specified. Limits apply for TA = 25˚C. Symbol Parameter Conditions LM4700 Typical (Note 9) |VCC| + |VEE| PO (N.


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