Datasheet > LME49600

LME49600

更新时间： 2024-09-16 03:51:43

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
20页	414K
描述
High Performance, High Fidelity, High Current Audio Buffer

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LME49600 数据手册

January 16, 2008

LME49600ꢀ

High Performance, High Fidelity, High Current Audio Buffer

General Description

Key Specifications

The LME49600 is a high performance, low distortion high fi-

delity 250mA audio buffer. Designed for use inside an oper-

ational amplifier’s feedback loop, it increases output current,

improves capacitive load drive, and eliminates thermal feed-

back.

■ꢀLow THD+N

(V_OUT= 3V_RMS, f = 1kHz, Figure 2)

0.00003% (typ)

2000V/μs (typ)

250mA (typ)

■ꢀSlew Rate

■ꢀHigh Output Current

■ꢀBandwidth

The LME49600 offers a pin-selectable bandwidth: a low cur-

rent, 110MHz bandwidth mode that consumes 8mA and a

wide 180MHz bandwidth mode that consumes 14.5mA. In

both modes the LME49600 has a nominal 2000V/μs slew

rate. Bandwidth is easily adjusted by either leaving the BW

pin unconnected or connecting a resistor between the BW pin

and the V_EEpin.

BW pin floating

110MHz (typ)

180MHz (typ)

BW connected to V_EE

■ꢀSupply Voltage Range

±2.25V ≤V_S≤±18V

The LME49600 is fully protected through internal current limit

and thermal shutdown.

Features

Pin-selectable bandwidth and quiescent current

Pure fidelity. Pure performance

Internal current limit

■

Thermal shutdown

TO–263 surface-mount package

Applications

Headphone amplifier output drive stage

■

Line drivers

Low power audio amplifiers

High-current operational amplifier output stage

ATE Pin Driver Buffer

■

Functional Block Diagram

30029805

FIGURE 1. Functional Block Diagram

Boomer® is a registered trademark of National Semiconductor Corporation.

300298

www.national.com

12 3 4 5 6 7...20

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