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TPA6138A2PWR 数据表(PDF) 1 Page - Texas Instruments |
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TPA6138A2PWR 数据表(HTML) 1 Page - Texas Instruments |
1 / 18 page TPA6138A2 www.ti.com SLOS704A – JANUARY 2011 – REVISED MAY 2011 DirectPath ™ Headphone Driver With Adjustable Gain Check for Samples: TPA6138A2 1 FEATURES DESCRIPTION 23 • Stereo DirectPath ™ Headphone Amplifier The TPA6138A2 is a pop-free stereo headphone – 40 mW Into 32 Ω With 3.3-V Supply amplifier designed to allow the removal of the output • Low THD+N < 0.01% at 10 mW Into 32 Ω dc-blocking capacitors for reduced component count and cost. The device is ideal for single-supply • High SNR, >90 dB electronics where size and cost are critical design • Differential Input and Single-Ended Output parameters. • Adjustable Gain by External Gain-Setting Designed using TI ’s patented DirectPath ™ Resistors technology, The TPA6138A2 is capable of driving 25 • Configurable as a Second-Order Low-Pass mW into a 32- Ω load with 3.3-V supply voltage. The Filter device has differential inputs and uses external – Ideal for PWM Audio Sources gain-setting resistors that supports a gain range of ±1 V/V to ±10 V/V. Gain can be configured individually • Low DC Offset, <1 mV for each channel. The device can also be configured • Ground-Referenced Outputs Eliminate as a second-order low-pass filter and is ideal for DC-Blocking Capacitors interfacing with PWM audio sources. Audio output – Reduce Board Area compiles with ±8-kV IEC ESD protection, requiring just a simple resistor-capacitor ESD protection circuit. – Reduce Component Cost The TPA6138A2 has built-in active-mute control for – Improve THD+N Performance pop-free audio on/off control. The TPA6138A2 has an – No Degradation of Low-Frequency external undervoltage detector that mutes the output Response Due to Output Capacitors when the power supply is removed, ensuring a pop-free shutdown. • Short-Circuit Protection Using the TPA6138A2 in audio products can reduce • Click- and Pop-Reduction Circuitry component count considerably compared to • External Undervoltage Mute traditional headphone amplifiers. The TPA6138A2 • Active Mute Control for Pop-Free Audio On/Off does not require a split-rail power supply or a dc Control blocking capacitor. The TPA6138A2 integrates its own charge pump to generate a negative supply rail • Space-Saving TSSOP Package that provides a clean, pop-free ground-biased audio signal. APPLICATIONS The TPA6138A2 is available in a 14-pin TSSOP. • LCD and PDP TV • Blu-ray Disc ™, DVD Players • Set-Top Boxes • Mini/Micro Combo Systems • Sound Cards • Laptops 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 DirectPath, FilterPro are trademarks of Texas Instruments. 3 Blu-ray Disc is a trademark of Blu-ray Disc Association. PRODUCTION DATA information is current as of publication date. Copyright © 2011, 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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类似说明 - TPA6138A2PWR |
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