This part is a kind of semiconductor called TDA746913TR.

Function of this product has LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH HEADPHONE POWER AMPLIFIER.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TDA7469 LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH HEADPHONE POWER AMPLIFIER 1 ■ ■ ■ ■ ■ ■ ■ ■ FEATURES 2 STEREO INPUT 1 STEREO OUTPUT TREBLE BOOST BASS CONTROL BASS AUTOMATIC LEVEL CONTROL VOLUME CONTROL IN 1dB STEPS MUTE STAND-BY FUNCTION SOFTWARE CONTROLLED ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS Figure 1. Package SSOP24 Table 1. Order Codes Part Number TDA7469 TDA746913TR Package SSOP24 Tape & Reel ■ 2 DESCRIPTION The TDA7469 is a volume tone (bass and treble) processor for quality audio applications in Low voltage supply portable systems. Bass ALC (Automatic Level Control) function can be adjusted by a dedicated pin. The control of all the functions is accomplished by serial bus. Figure 2. Block Diagram The AC signal setting is obtained by resistor network [ ... ]

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