- 制造厂商：TI
- 产品类别：音频
- 技术类目：音频放大器 - 扬声器放大器
- 功能描述：具有关断模式和可选增益的 1W、单声道、模拟输入、AB 类音频放大器
- 点击这里打开及下载TPA4861的技术文档资料
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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.
- 1-W BTL Output (5 V, 0.11 % THD+N)
- 3.3-V and 5-V Operation
- No Output Coupling Capacitors Required
- Shutdown Control (IDD = 0.6 μA)
- Uncompensated Gains of 2 to 20 (BTL Mode)
- Surface-Mount Packaging
- Thermal and Short-Circuit Protection
- High Supply Ripple Rejection Ratio (56 dB at 1 kHz)
- LM4861 Drop-In Compatible
- Audio input type
- Analog Input
- Architecture
- Class-AB
- Speaker channels (Max)
- Mono
- Power stage supply (Max) (V)
- 5.5
- Power stage supply (Min) (V)
- 2.7
- Load (Min) (ohms)
- 8
- Output power (W)
- 1
- THD + N @ 1 kHz (%)
- 0.12
- Iq (Typ) (mA)
- 3.5
- Control interface
- Hardware
- Closed/open loop
- Closed
- Analog supply (Min) (V)
- 2.5
- Analog supply (Max) (V)
- 5.5
- PSRR (dB)
- 75
- Operating temperature range (C)
- -40 to 85
TPA4861的完整型号有：TPA4861D、TPA4861DR，以下是这些产品的关键参数及官网采购报价：
TPA4861D，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPA4861D的批量USD价格：.908（1000+）
TPA4861DR，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPA4861DR的批量USD价格：.757（1000+）
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