TPA6138 Series
40-mW, stereo, analog input headphone amplifier with adjustable gain
Manufacturer: Texas Instruments
Catalog(3 parts)
| Part | Max Output Power x Channels @ Load▲▼ | Max Output Power x Channels @ Load▲▼ | Output Type | Board Type | Amplifier Type | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Supplied Contents | Utilized IC / Part | Type | Features | Supplier Device Package | Mounting Type | Package / Case | Package / Case▲▼ | Package / Case▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPA6138A2EVMTPA6138A2 DirectPath™ Headphones, 2-Channel (Stereo) Output Class AB Audio Amplifier Evaluation Board | 0.03999999910593033 W | 2 ul | Headphones, 2-Channel (Stereo) | Fully Populated | Class AB | 3.5999999046325684 V | 3 V | Board(s) | TPA6138A2 | |||||||||
0.03999999910593033 W | 2 ul | Headphones, 2-Channel (Stereo) | 3.5999999046325684 V | 3 V | Class AB | Depop, Differential Inputs, Mute, Short-Circuit Protection | 14-TSSOP | Surface Mount | 14-TSSOP | 0.004394200164824724 m | 0.004399999976158142 m | 85 °C | -40 °C | |||||
0.03999999910593033 W | 2 ul | Headphones, 2-Channel (Stereo) | 3.5999999046325684 V | 3 V | Class AB | Depop, Differential Inputs, Mute, Short-Circuit Protection | 14-TSSOP | Surface Mount | 14-TSSOP | 0.004394200164824724 m | 0.004399999976158142 m | 85 °C | -40 °C |
Key Features
• Stereo DirectPath™ Headphone Amplifier40 mW Into 32 Ω With 3.3-V SupplyLow THD+N < 0.01% at 10 mW Into 32 ΩHigh SNR, >90 dBDifferential Input and Single-Ended OutputAdjustable Gain by External Gain-SettingResistorsConfigurable as a Second-Order Low-Pass FilterIdeal for PWM Audio SourcesLow DC Offset, <1 mVGround-Referenced Outputs Eliminate DC-Blocking CapacitorsReduce Board AreaReduce Component CostImprove THD+N PerformanceNo Degradation of Low-Frequency ResponseDue to Output CapacitorsShort-Circuit ProtectionClick- and Pop-Reduction CircuitryExternal Undervoltage MuteActive Mute Control for Pop-Free Audio On/OffControlSpace-Saving TSSOP PackageStereo DirectPath™ Headphone Amplifier40 mW Into 32 Ω With 3.3-V SupplyLow THD+N < 0.01% at 10 mW Into 32 ΩHigh SNR, >90 dBDifferential Input and Single-Ended OutputAdjustable Gain by External Gain-SettingResistorsConfigurable as a Second-Order Low-Pass FilterIdeal for PWM Audio SourcesLow DC Offset, <1 mVGround-Referenced Outputs Eliminate DC-Blocking CapacitorsReduce Board AreaReduce Component CostImprove THD+N PerformanceNo Degradation of Low-Frequency ResponseDue to Output CapacitorsShort-Circuit ProtectionClick- and Pop-Reduction CircuitryExternal Undervoltage MuteActive Mute Control for Pop-Free Audio On/OffControlSpace-Saving TSSOP Package
Description
AI
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.
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.