BOB-11044 SparkFun Mono Audio Amp Breakout - TPA2005D1推薦

原名

貨號

BOB-11044

特價

資料來源：https://www.sparkfun.com/products/11044

This tiny audio amplifier is based on the Texas Instruments TPA2005D1. Its efficient class-D operation means low heat and long battery life. It can drive an 8-Ohm speaker at up to 1.4 Watts; it won’t shake a stadium, but it will provide plenty of volume for your audio projects.

The fully-differential inputs are safe for floating audio signals such as from our MP3 Shield, and can also be connected to ground-referenced signals as well. A shutdown input is provided to save power when the amplifier is not being used, and a solder jumper and header are provided to connect a volume-control potentiometer (not included).

Note: The amplifier’s class-D design outputs a 250kHz PWM-like signal that is restored to an analog voltage in the speaker’s coil. This is what makes the amplifier so efficient, but because of the switching frequency, you should keep the amplifier as close to the speaker as possible to minimize possible interference.

Features:

Extremely efficient class-D amplifier
1.4W into 8 Ohms
2.5V to 5.5V supply
Fully differential audio inputs, can be ground-referenced as well
Shutdown input with pullup and LED-follows-shutdown circuitry
PTH pads provided to change gain resistors if desired (see datasheet for details)
Solder jumper and header allow addition of a 10k volume control potentiometer (not included)

Documents:

這個微小的音頻放大器是基於德州儀器TPA2005D1。其高效D類操作意味著低發熱量和超長電池壽命。它能夠以高達1.4瓦驅動8歐姆揚聲器;它不會動搖體育場，但它會提供大量的容積為您的音頻項目。

的完全差分輸入是浮動的音頻信號，例如來自我們的MP3盾安全，並且也可以連接到接地參考信號為好。關斷輸入提供以節省電源在不使用放大器時，並提供焊接跳線和頭連接一個音量控制電位器（不包括）。

注意：放大器的D類設計輸出一個被恢復成一個模擬電壓在揚聲器的線圈在250kHz的PWM狀信號。這是什麼使放大器的效率很高，但由於開關頻率的，你應該保持放大器盡量靠近揚聲器，以盡量減少可能的干擾。

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