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TPA311 Datasheet 350-mW MONO AUDIO POWER AMPLIFIER

Manufacturer: Texas Instruments

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General Description

D OR DGN PACKAGE (TOP VIEW) The TPA311 is a bridge-tied load (BTL) or single-ended (SE) audio power amplifier developed especially for low-voltage applications where internal speakers and external earphone operation are required.

Operating with a 3.3-V SHUTDOWN 1 8 VO– BYPASS 2 7 GND SE/BTL 3 6 VDD IN 4 5 VO+ supply, the TPA311 can deliver 250-mW of continuous power into a BTL 8-Ω load at less than 1% THD+N throughout voice band frequencies.

Although this device is characterized out to 20 kHz, its operation was optimized for narrower band applications such as cellular communications.

Overview

TPA311 350-mW MONO AUDIO POWER AMPLIFIER SLOS207C – JANUARY 1998 – REVISED MAY 2003 D Fully Specified for 3.3-V and 5-V Operation D Wide Power Supply Compatibility 2.5 V – 5.5 V D Output Power for RL = 8 Ω – 350 mW at VDD = 5 V, BTL – 250 mW at VDD = 5 V, SE – 250 mW at VDD = 3.3 V, BTL – 75 mW at VDD = 3.3 V, SE D Shutdown Control – IDD = 7 µA at 3.

Key Features

  • a shutdown mode for power-sensitive.

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