Product Summary

The TPA4861D is a bridge-tied load (BTL) audio power amplifier capable of delivering 1 W of continuous average power into an 8-Ω 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 TPA4861D are a shutdown function for power-sensitive applications as well as internal thermal and short-circuit protection. The TPA4861DR is available in an 8-pin SOIC surface-mount package that reduces board space and facilitates automated assembly.

Parametrics

TPA4861D absolute maximum ratings: (1)VDD, Supply voltage: 6 V; (2)VI, Input voltage: – 0.3 V to V DD +0.3 V; (3)TA, Operating free-air temperature range: – 40 to 85℃; (4)TJ, Operating junction temperature range: – 40 to 150℃; (5)Tstg, Storage temperature range: – 65 to 150℃; (6)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 ℃.

Features

TPA4861D features: (1)1-W BTL Output (5 V, 0.11 % THD+N); (2)3.3-V and 5-V Operation; (3)No Output Coupling Capacitors Required; (4)Shutdown Control (I DD = 0.6 μ A); (5)Uncompensated Gains of 2 to 20 (BTL Mode); (6)Surface-Mount Packaging; (7)Thermal and Short-Circuit Protection; (8)High Supply Ripple Rejection Ratio (56 dB at 1 kHz); (9)LM4861 Drop-In Compatible.

Diagrams

TPA4861D block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
TPA4861DG4
TPA4861DG4
Texas Instruments
Audio Amplifiers 1W Mono Audio
Data Sheet
0-1: $0.89
1-25: $0.80
25-100: $0.60
100-250: $0.56
TPA4861DR
TPA4861DR
Texas Instruments
Audio Amplifiers 1-W Mono Audio Power Amplifier
Data Sheet
0-1: $1.05
1-25: $0.85
25-100: $0.76
100-250: $0.68
TPA4861DRG4
TPA4861DRG4
Texas Instruments
Audio Amplifiers 1-W Mono Audio Power Amplifier
Data Sheet
0-1930: $0.43
1930-2000: $0.42
2000-2500: $0.42
2500-5000: $0.41
TPA4861D
TPA4861D
Texas Instruments
Audio Amplifiers 1W Mono Audio
Data Sheet
0-1: $1.10
1-25: $1.00
25-100: $0.79
100-250: $0.74