TPA4861 Series

1-W, mono, analog input, Class-AB audio amplifier with shutdown mode & selectable gain

Catalog

1-W, mono, analog input, Class-AB audio amplifier with shutdown mode & selectable gain

Part	Type	Max Output Power x Channels @ Load	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Features	Package / Case	Package / Case [y]	Package / Case [x]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Output Type
Texas Instruments TPA4861D	Class AB	1 1.1 W	2.7 V	5.5 V	Surface Mount	Short-Circuit and Thermal Protection Shutdown	8-SOIC	3.9 mm	0.154 in	8-SOIC	85 °C	-40 °C	1-Channel (Mono)
Texas Instruments TPA4861DR	Class AB	1 1.1 W	2.7 V	5.5 V	Surface Mount	Short-Circuit and Thermal Protection Shutdown	8-SOIC	3.9 mm	0.154 in	8-SOIC	85 °C	-40 °C	1-Channel (Mono)
Texas Instruments TPA4861DRG4	Class AB	1 1.1 W	2.7 V	5.5 V	Surface Mount	Short-Circuit and Thermal Protection Shutdown	8-SOIC	3.9 mm	0.154 in	8-SOIC	85 °C	-40 °C	1-Channel (Mono)

Catalog

1-W, mono, analog input, Class-AB audio amplifier with shutdown mode & selectable gain

Key Features

• 1-W BTL Output (5 V, 0.11 % THD+N)3.3-V and 5-V OperationNo Output Coupling Capacitors RequiredShutdown Control (IDD= 0.6 µA)Uncompensated Gains of 2 to 20 (BTL Mode)Surface-Mount PackagingThermal and Short-Circuit ProtectionHigh Supply Ripple Rejection Ratio (56 dB at 1 kHz)LM4861 Drop-In Compatible1-W BTL Output (5 V, 0.11 % THD+N)3.3-V and 5-V OperationNo Output Coupling Capacitors RequiredShutdown Control (IDD= 0.6 µA)Uncompensated Gains of 2 to 20 (BTL Mode)Surface-Mount PackagingThermal and Short-Circuit ProtectionHigh Supply Ripple Rejection Ratio (56 dB at 1 kHz)LM4861 Drop-In Compatible

Description

The TPA4861 is a bridge-tied load (BTL) audio power amplifier capable of delivering 1 W of continuous average power into an 8-load at 0.2% THD+N from a 5-V power supply in voiceband frequencies (f < 5 kHz). A BTL configuration eliminates the need for external coupling capacitors on the output in most applications. Gain is externally configured by means of two resistors and does not require compensation for settings of 2 to 20. Features of the amplifier are a shutdown function for power-sensitive applications as well as internal thermal and short-circuit protection. The TPA4861 works seamlessly with TI’s TPA4860 in stereo applications. The amplifier is available in an 8-pin SOIC surface-mount package that reduces board space and facilitates automated assembly. The TPA4861 is a bridge-tied load (BTL) audio power amplifier capable of delivering 1 W of continuous average power into an 8-load at 0.2% THD+N from a 5-V power supply in voiceband frequencies (f < 5 kHz). A BTL configuration eliminates the need for external coupling capacitors on the output in most applications. Gain is externally configured by means of two resistors and does not require compensation for settings of 2 to 20. Features of the amplifier are a shutdown function for power-sensitive applications as well as internal thermal and short-circuit protection. The TPA4861 works seamlessly with TI’s TPA4860 in stereo applications. The amplifier is available in an 8-pin SOIC surface-mount package that reduces board space and facilitates automated assembly.