DRV632集成電路（IC）的音頻專用規(guī)格書PDF中文資料

DRV632屬于集成電路（IC）的音頻專用。由美國德州儀器公司制造生產(chǎn)的DRV632音頻專用音頻專用的半導(dǎo)體器件專為音頻信號的濾波、驅(qū)動、放大、轉(zhuǎn)換和接口而設(shè)計。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費(fèi)類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動器、前置放大器、信號混合、信號處理、語音觸發(fā)器解決方案和 10 Base-T。

1 Features

1? Stereo DirectPath? Audio Line Driver

– 2 Vrms Into 10 kΩ With 3.3-V Supply

? Low THD+N < 0.01% at 2 Vrms Into 10 kΩ

? High SNR, >90 dB

? 600-Ω Output Load Compliant

? Differential Input and Single-Ended Output

? Adjustable Gain by External Gain-Setting

Resistors

? Low DC Offset, <1 mV

? Ground-Referenced Outputs Eliminate DCBlocking

Capacitors

– Reduce Board Area

– Reduce Component Cost

– Improve THD+N Performance

– No Degradation of Low-Frequency Response

Due to Output Capacitors

? Short-Circuit Protection

? Click- and Pop-Reduction Circuitry

? External Undervoltage Mute

? Active Mute Control for Pop-Free Audio On/Off

Control

? Space-Saving TSSOP Package

2 Applications

? Set-Top Boxes

? Blu-ray Disc?, DVD Players

? LCD and PDP TV

? Mini/Micro Combo Systems

? Sound Cards

? Laptops

3 Description

The DRV632 is a 2-VRMS pop-free stereo line driver

designed to allow the removal of the output dcblocking

capacitors for reduced component count and

cost. The device is ideal for single-supply electronics

where size and cost are critical design parameters.

Designed using TI’s patented DirectPath?

technology, The DRV632 is capable of driving 2 VRMS

into a 10-kΩ load with 3.3-V supply voltage. The

device has differential inputs and uses external gainsetting

resistors to support a gain range of ±1 V/V to

±10 V/V, and gain can be configured individually for

each channel. Line outputs have ±8-kV IEC ESD

protection, requiring just a simple resistor-capacitor

ESD protection circuit. The DRV632 has built-in

active-mute control for pop-free audio on/off control.

The DRV632 has an external undervoltage detector

that mutes the output when the power supply is

removed, ensuring a pop-free shutdown.

Using the DRV632 in audio products can reduce

component count considerably compared to

traditional methods of generating a 2-VRMS output.

The DRV632 does not require a power supply greater

than 3.3 V to generate its 5.6-Vpp output, nor does it

require a split-rail power supply. The DRV632

integrates its own charge pump to generate a

negative supply rail that provides a clean, pop-free

ground-biased 2-VRMS output.

The DRV632 is available in a 14-pin TSSOP.