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LM4914 Folha de dados(PDF) 1 Page - National Semiconductor (TI) |
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LM4914 Folha de dados(HTML) 1 Page - National Semiconductor (TI) |
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1 / 15 page  LM4914 1W Monaural, 85mW Stereo Headphone Audio Amplifier General Description The unity-gain stable LM4914 is both a mono differential output (for bridge-tied loads, or BTL) audio power amplifier and a single-ended (SE) stereo headphone amplifier. Oper- ating on a single 5V supply, the mono BTL mode delivers 1W into an 8 Ω load. In SE stereo mode, the amplifier delivers 85mW to 32 Ω loads. The LM4914 features circuitry that suppresses output transients ("clicks and pops"). The LM4914 is designed for notebook and other handheld portable applications. It delivers high quality output power from a surface-mount package and requires few external components. The LM4914 is pin and functionally compatible with the TPA0253. Other features include an active-low micro-power shutdown mode and thermal shutdown protection. The LM4914 is available in a space efficient 10-lead exposed-DAP TSSOP package. Key Specifications j BTL output power (RL =8 Ω) V DD = at 3.0V, THD = 0.1% V DD = at 5.0V, THD = 0.1% 330mW (typ) 1W (typ) j SE output power (RL =32 Ω) V DD = at 3.0V, THD = 0.1% V DD = at 5.0V, THD = 0.1% 30mW (typ) 85mW (typ) j Micro-power shutdown supply current 0.03µA (typ) j PSRR (f = 1kHz) V DD = at 3.0V, BTL Mode V DD = at 5.0V, BTL Mode 52dB (typ) 52dB (typ) Features n Advanced "click and pop" suppression circuitry n Stereo headphone amplifier mode n Low current micro-power shutdown mode n Thermal shutdown protection circuitry n 2.5V to 5.5V operation n Unity-gain stable n Gain set with external resistors n Space-saving exposed-DAP TSSOP package Applications n PDAs n Cellular phones n Handheld portable electronic devices Connection Diagram 200634A0 Top View Order Number LM4914MH See NS package Number MXF10A Boomer® is a registered trademark of National Semiconductor Corporation. March 2003 © 2003 National Semiconductor Corporation DS200634 www.national.com |
Nº de peça semelhante - LM4914 |
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Descrição semelhante - LM4914 |
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