TS4975 datasheet(1/36 Pages) STMICROELECTRONICS

部品番号	TS4975

部品情報	Stereo Headphone Drive Amplifier with Digital Volume Control via I2C Bus

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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1 / 36 page

Rev 3

November 2005

1/36

36

TS4975

Stereo Headphone Drive Amplifier with

Digital Volume Control via I2C Bus

■ Operating from VCC = 2.5V to 5.5V

■ I²C bus control interface

■ 40mW output power @ VCC =3.3V,

THD = 1%, F = 1kHz, with 16

Ω load

■ Ultra-low consumption in stdby mode: 0.6µA

■ Digital volume control range from 18dB to

-34dB

■ 14-step digital volume control

■ 9 different output mode selections

■ Pop & click noise reduction circuitry

■ Flip-chip package, 12 x 300µm bumps (lead-

free)

Description

The TS4975 is a stereo audio headphone driver

capable of delivering up to 102mW per channel of

continuous average power into a 16

Ω single-

ended load with 1% THD+N from a 5V power

supply. The overall gain of these headphone

drivers is controlled digitally by volume control

registers programmed via the I2C interface,

minimizing the number of external components

needed. This device can also easily be driven by

an MCU to select the output modes, through the

I2C bus interface.

A phantom ground configuration allows one to

avoid using bulky capacitors on the outputs of the

headphone amplifiers.

The TS4975 is packaged in a 1.8mm X 2.3mm

Flip Chip package, ideally suited for space-

conscious portable applications.

It

has

also

an

internal

thermal

shutdown

protection mechanism.

Applications

■

Mobile phones (cellular / cordless)

■

PDAs

■

Laptop/notebook computers

■

Portable audio devices

Order Codes

TS4975EIJT - Flip Chip

OUT1

IN1

BYPASS

PHG1

VCC

SCL

PHG2

GND

SDA

OUT2

IN2

ADD

OUT1

IN1

BYPASS

PHG1

VCC

SCL

PHG2

GND

SDA

OUT2

IN2

ADD

Pin out (top view)

Part Number

Temperature Range

Package

Packing

Marking

TS4975EIJT

-40, +85°C

Flip-chip

Tape & Reel

A75

www.st.com

同様の部品番号 - TS4975

メーカー	部品番号	データシート	部品情報
STMicroelectronics	TS4975	747Kb / 33P	Stereo Headphone Drive Amplifier with Digital Volume Control via IC Bus Jul-2005
STMicroelectronics	TS4975EIJT	747Kb / 33P	Stereo Headphone Drive Amplifier with Digital Volume Control via IC Bus Jul-2005

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同様の説明 - TS4975

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