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LM4951SDX Arkusz danych(PDF) 1 Page - Texas Instruments |
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LM4951SDX Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 22 page LM4951 www.ti.com SNAS244N – AUGUST 2004 – REVISED MAY 2013 LM4951 Wide Voltage Range 1.8 Watt Audio Amplifier Check for Samples: LM4951 1 FEATURES DESCRIPTION The LM4951 is an audio power amplifier primarily 2 • Click and Pop Circuitry Eliminates Noise designed for demanding applications in Portable during Turn-On and Turn-Off Transitions Handheld devices. It is capable of delivering 1.8W • Low Current, Active-Low Shutdown Mode mono BTL to an 8 Ω load, continuous average power, • Low Quiescent Current with less than 1% distortion (THD+N) from a 7.5VDC power supply. • Thermal Shutdown Protection Boomer audio power amplifiers were designed • Unity-Gain Stable specifically to provide high quality output power with a • External Gain Configuration Capability minimal amount of external components. The LM4951 does not require bootstrap capacitors, or APPLICATIONS snubber circuits. • Portable Handheld Devices up to 9V The LM4951 features a low-power consumption • Cell Phone active-low shutdown mode. Additionally, the LM4951 features an internal thermal shutdown protection • PDA mechanism. KEY SPECIFICATIONS The LM4951 contains advanced click and pop circuitry that eliminates noises which would otherwise • Wide Voltage Range: 2.7V to 9 V occur during turn-on and turn-off transitions. • Quiescent Power Supply Current (VDD = The LM4951 is unity-gain stable and can be 7.5V): 2.5mA (typ) configured by external gain-setting resistors. • Power Output BTL at 7.5V, 1% THD: 1.8 W (typ) • Shutdown Current: 0.01µA (typ) • Fast Turn on Time: 25ms (typ) 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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