Catalog
32-mW, stereo, analog input headphone amplifier
Key Features
• TI Class-G Technology Significantly Prolongs Battery Life and Music Playback Time0.6 mA / Ch Quiescent Current50% to 80% Lower Quiescent Current Than Ground-Referenced Class-AB Headphone AmplifiersDirectPathTMTechnology Eliminates Large Output DC-Blocking CapacitorsOutputs Biased at 0 VImproves Low Frequency Audio FidelityActive Click and Pop SuppressionFully Differential Inputs Reduce System NoiseAlso Configurable as Single-Ended InputsSGND Pin Eliminates Ground Loop NoiseWide Power Supply Range: 2.5 V to 5.5 V100 dB Power Supply Noise RejectionBuilt-in Input Low Pass FilterGain Settings: 0 dB and 6dBShort-Circuit Current LimiterThermal-Overload Protection±8 kV HBM ESD Protected Outputs0,4 mm Pitch, 1,6 mm × 1,6 mm 16-Bump WCSP (YFF) PackageAPPLICATIONSCellular Phones / Music PhonesSmart PhonesPortable Media / MP3 PlayersPortable CD / DVD PlayersAll trademarks are the property of their respective owners.TI Class-G Technology Significantly Prolongs Battery Life and Music Playback Time0.6 mA / Ch Quiescent Current50% to 80% Lower Quiescent Current Than Ground-Referenced Class-AB Headphone AmplifiersDirectPathTMTechnology Eliminates Large Output DC-Blocking CapacitorsOutputs Biased at 0 VImproves Low Frequency Audio FidelityActive Click and Pop SuppressionFully Differential Inputs Reduce System NoiseAlso Configurable as Single-Ended InputsSGND Pin Eliminates Ground Loop NoiseWide Power Supply Range: 2.5 V to 5.5 V100 dB Power Supply Noise RejectionBuilt-in Input Low Pass FilterGain Settings: 0 dB and 6dBShort-Circuit Current LimiterThermal-Overload Protection±8 kV HBM ESD Protected Outputs0,4 mm Pitch, 1,6 mm × 1,6 mm 16-Bump WCSP (YFF) PackageAPPLICATIONSCellular Phones / Music PhonesSmart PhonesPortable Media / MP3 PlayersPortable CD / DVD PlayersAll trademarks are the property of their respective owners.
Description
AI
The TPA6141A2 (also known as TPA6141) is a Class-G DirectPath stereo headphone amplifier with selectable gain. Class-G technology maximizes battery life by adjusting the voltage supplies of the headphone amplifier based on the audio signal level. At low level audio signals, the internal supply voltage is reduced to minimize power dissipation. DirectPathTMtechnology eliminates external DC-blocking capacitors.
The device features fully differential inputs with an integrated low pass filter to reduce system noise pickup between the audio source and the headphone amplifier and to reduce DAC out-of-band noise. The high power supply noise rejection performance and differential architecture provides increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.
The device operates from a 2.5 V to 5.5 V supply voltage. Class-G operation keeps total supply current below 5.0 mA while delivering 500 µW per channel into 32. Shutdown mode reduces the supply current to less than 3 µA and is activated through the EN pin.
The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8 kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.
The TPA6141A2 (also known as TPA6141) is a Class-G DirectPath stereo headphone amplifier with selectable gain. Class-G technology maximizes battery life by adjusting the voltage supplies of the headphone amplifier based on the audio signal level. At low level audio signals, the internal supply voltage is reduced to minimize power dissipation. DirectPathTMtechnology eliminates external DC-blocking capacitors.
The device features fully differential inputs with an integrated low pass filter to reduce system noise pickup between the audio source and the headphone amplifier and to reduce DAC out-of-band noise. The high power supply noise rejection performance and differential architecture provides increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.
The device operates from a 2.5 V to 5.5 V supply voltage. Class-G operation keeps total supply current below 5.0 mA while delivering 500 µW per channel into 32. Shutdown mode reduces the supply current to less than 3 µA and is activated through the EN pin.
The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8 kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.
