The TPA6138A2 is a pop-free stereo headphone amplifier designed to allow the removal of the output dc-blocking capacitors for reduced component count and cost. The device is ideal for single-supply electronics where size and cost are critical design parameters.
Designed using TI’s patented DirectPath™ technology, The TPA6138A2 is capable of driving 25 mW into a 32-Ω load with 3.3-V supply voltage. The device has differential inputs and uses external gain-setting resistors that supports a gain range of ±1 V/V to ±10 V/V. Gain can be configured individually for each channel. The device can also be configured as a second-order low-pass filter and is ideal for interfacing with PWM audio sources. Audio output compiles with ±8-kV IEC ESD protection, requiring just a simple resistor-capacitor ESD protection circuit. The TPA6138A2 has built-in active-mute control for pop-free audio on/off control. The TPA6138A2 has an external undervoltage detector that mutes the output when the power supply is removed, ensuring a pop-free shutdown.
Using the TPA6138A2 in audio products can reduce component count considerably compared to traditional headphone amplifiers. The TPA6138A2 does not require a split-rail power supply or a dc blocking capacitor. The TPA6138A2 integrates its own charge pump to generate a negative supply rail that provides a clean, pop-free ground-biased audio signal.
The TPA6138A2 is available in a 14-pin TSSOP.
| Top-Dokumentation | Typ | Titel | Format-Optionen | Neueste englische Version herunterladen | Datum | |
|---|---|---|---|---|---|---|
| * | Datenblatt | TPA6138A2 DirectPath™ Headphone Driver With Adjustable Gain datasheet (Rev. B) | PDF | HTML | 24.08.2015 | ||
| Anwendungshinweis | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 26.08.2019 | ||||
| Anwendungshinweis | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 27.06.2019 |
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
The TPA6138A2EVM customer evaluation module (EVM) demonstrates the capabilities and operation of the TPA6138A2PW integrated circuit from Texas Instruments. The TPA6138A2PW is a 25mW Pop-Free stereo Head Phone driver designed to replace headphone circuit based on Op amps and passives.
The TPA6138A2 (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| TSSOP (PW) | 14 | Ultra Librarian |
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