TPA0211中文资料2W 单声道、模拟输入 AB 类音频放大器数据手册TI规格书

描述 Description

The TPA0211 is a 2-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 4-Ω impedance. The device is ideal for small wireless communicators, notebook PCs, PDAs, anyplace a mono speaker and stereo headphones are required. From a 5-V supply, the TPA0211 can deliver 2 W of power into a 4-Ω speaker.The gain of the input stage is set by the user-selected input resistor and a 50-kΩ internal feedback resistor (AV = –RF / RI). The power stage is internally configured with a gain of –1.25 V/V in SE mode, and –2.5 V/V in BTL mode. Thus, the overall gain of the amplifier is –62.5 kΩ/RI in SE mode and –125 kΩ/RI in BTL mode. The input terminals are high-impedance CMOS inputs, and can be used as summing nodes.The TPA0211 is available in the 8-pin thermally-enhanced MSOP-PowerPAD package (DGN) and operates over an ambient temperature range of –40°C to 85°C.

特性 Features

• 2 W Into 4 Ω From 5-V Supply
• 0.6 W Into 4 Ω From 3-V Supply
• Wide Power Supply Compatibility: 3 V to 5 V
• Low Supply Current:
• 4 mA Typical at 5 V
• 4 mA Typical at 3 V

• Shutdown Control: 1 µA Typical
• Shutdown Pin Is TTL Compatible
• –40°C to 85°C Operating Temperature Range
• Space-Saving, Thermally-Enhanced MSOP-PowerPAD™ Packaging