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LM4947TLEVAL - Mono Class D and Stereo Audio Sub-System

Download the LM4947TLEVAL datasheet PDF. This datasheet also covers the LM4947 variant, as both devices belong to the same mono class d and stereo audio sub-system family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM4947 is an audio subsystem capable of efficiently delivering 500mW (Class D operation) of continuous average power into a mono 8Ω bridgedtied load (BTL) with 1% THD+N, 37mW (Class AB operation) power channel of continuous average power into stereo 32Ω single-ended (SE) loads with 1% THD+N, or

Key Features

  • 1.
  • 2 I2C Control Interface.
  • I2C Programmable Texas Instruments 3D Audio.
  • I2C Controlled 32 Step Digital Volume Control (-59.5dB to +18dB).
  • Three Independent Volume Channels (Left, Right, Mono).
  • Eight Distinct Output Modes.
  • Small, 25.
  • Bump DSBGA Packaging.
  • “Click and Pop” Suppression Circuitry.
  • Thermal Shutdown Protection.
  • Low Shutdown Current (0.1μA, typ).
  • RF Suppression.
  • Differential Mono an.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM4947-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM4947 Mono Class D and Stereo Audio Subsystem National Semiconductor
LM494 Pulse Width Modulated Controller National Semiconductor
LM4940 6W Stereo Audio Power Amplifier National Semiconductor
LM4940 6W Stereo Audio Power Amplifier National Semiconductor
LM4941 1.25 Watt Fully Differential Audio Power Amplifier National Semiconductor

Other Datasheets by Texas Instruments

Part Number Description
LM4947 Mono Class D and Stereo Audio Sub-System
LM4940 6W Stereo Audio Power Amplifier
LM4941 1.25 Watt Fully Differential Audio Power Amplifier
LM4941SDBD 1.25 Watt Fully Differential Audio Power Amplifier
LM4941TMBD 1.25 Watt Fully Differential Audio Power Amplifier

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM4947, LM4947TLEVAL www.ti.com SNAS349D – JUNE 2006 – REVISED MAY 2013 LM4947 Mono Class D and Stereo Audio Sub-System with OCL Headphone Amplifier and TI 3D Check for Samples: LM4947, LM4947TLEVAL FEATURES 1 •2 I2C Control Interface • I2C Programmable Texas Instruments 3D Audio • I2C Controlled 32 Step Digital Volume Control (-59.5dB to +18dB) • Three Independent Volume Channels (Left, Right, Mono) • Eight Distinct Output Modes • Small, 25–Bump DSBGA Packaging • “Click and Pop” Suppression Circuitry • Thermal Shutdown Protection • Low Shutdown Current (0.1μA, typ) • RF Suppression • Differential Mono and Stereo Inputs • Stereo Input Mux KEY SPECIFICATIONS • THD+N at 1kHz, 500mW into 8Ω BTL (3.3V): 1.0% (typ) • THD+N at 1kHz, 37mW into 32Ω SE (3.3V): 1.