TS4974IQT Datasheet

IC型號(hào)：
TS4974IQT
PDF描述：
1W Differential Audio Power Amplifier with Up/Down Digital V...
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PDF頁數(shù)：
8頁
芯片廠家：
STMICROELECTRONICS

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TS4974

1W Differential Audio Power Amplifier

with Up/Down Digital Volume Control Pins

PRODUCT PREVIEW

Operating from V

= 2.5V to 5.5V

Zero pop&clickless circuit

1.W output power @ Vcc=5V, THD=1%,

F=1kHz, with 8

鈩?/div>

Load

Ultra low consumption in standby mode

(2碌A(chǔ) max.)

85dB PSRR @ 217Hz

16 digital volume control steps

Two up and down volume control discrete

pins

Gain range from -33dB to + 12dB

Integrated debouncing system

Ultra fast start up time: 15ms typ.

DFN10 3X3 mm pitch 0.5

Pin Connections (top view)

TS4974IQ DFN Package

Description

At 3.3v, the TS4974 is a dual power audio

amplifier capable of delivering 380mW of

continuous RMS ouput power into a 8

鈩?/div>

bridged-

tied loads with 1% THD+N. An external standby

mode control reduces the supply current to less

than 2碌A(chǔ). An internal over-temperature shutdown

protection is provided.

The TS4974 has been designed for high quality

audio applications such as mobile phones and for

minimizing the number of external components.

The TS4974 features a 16 step digital volume

control through two discrete control Up and Down

pins. The start-up gain is internally fixed to -12dB.

An integrated debounce system prevents voltage

pikes on UP/DOWN pins during volume control

mode to be taken into account during a debounce

time of 10ms (typ.).

TS4974IQ - Pinout

VIN-

VIN+

BYPASS

STANDBY

GND

VCC

VOUT-

VOUT+

UP / DVC

DOWN / DVC

Applications

Mobile phones (cellular / cordless)

PDAs

Laptop/notebook computers

Portable audio devices

Order Codes

Part Number

TS4974IQT

Temperature Range

-40, +85擄C

Package

QFN

Packaging

Tape & Reel

Marking

TBA

November 2004

Revision 1

1/8

This is preliminary information on a new product now in development. Details are subject to change without notice.

其它有關(guān)文件
TS4974 View All Specifications
標(biāo)準(zhǔn)包裝
1
類別
集成電路 (IC)
家庭
線性 - 音頻放大器
系列
-
類型
AB 類
輸出類型
1-通道（單聲道）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量
1W x 1 @ 8 歐姆
電源電壓
2.5 V ~ 5.5 V
特點(diǎn)
消除爆音，差分輸入，待機(jī)，熱保護(hù)，音量控制
安裝類型
表面貼裝
供應(yīng)商設(shè)備封裝
10-DFN-EP（3x3）
封裝/外殼
10-VFDFN 裸露焊盤
包裝
Digi-Reel®
配用
497-6382-ND - BOARD DEMO FOR TS4974IQT
其它名稱
497-5994-6

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