Datasheet > LM4890

LM4890

更新时间： 2024-03-03 10:11:34

品牌	Logo	应用领域
华冠 - HGSEMI		放大器音频放大器
页数	文件大小	规格书
13页	904K
描述
1.2W 音频放大器

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LM4890 数据手册

LM4890

Absolute Maximum Ratings

Condition

Input Voltage to GND

Min

Max

-0.3V

Other pin Voltage to GND

-0.3V

Junction Temperature, T_JMAX

Storage Temperature Rang, Tstg

ESD Susceptibility

150°C

2kV

-65°C

Maximum Soldering Temperature (at leads, 10 sec)

Thermal Resistance θ_JA

245°C

165°C/W

0.9W

Package Dissipation P_D

Note:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate

conditions for which the device is intended to be functional, but specific performance is not ensured.

Electrical Characteristics

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

Output offset voltage

VOS

Vi=0V,Av=2V/V,VDD=2.5V to 5.5V

(measured differentially)

VDD=5.5V, no load

2.5

1.40

1.06

2.0

Quiescent current

Shutdown Current

VDD=3.6V, no load

µA

VDD=2.5V, no load

ISHDN

RDS(ON)

VSHDN=0.35V, VDD=2.5V to 5.5V

VDD=5.5V, no load

0.1

1.4

400

500

700

1.2

Static drain-source on-state

resistance

VDD=3.6V, no load

mΩ

VDD=2.5V, no load

Output power

VDD=5.2V, RL=8Ω, THD=1%, f=1KHz

Start up voltage threshold

Shutdown voltage threshold

VSHDN

0.4

VDD=5V,Po=1W,RL=8Ω,f=1KHz

VDD=3.6V,Po=0.5W,RL=8Ω,f=1KHz

VDD=2.5V,Po=0.2W,RL=8Ω,f=1KHz

0.123

0.130

0.163

Total harmonic distortion

plus noise

THD+N

PSRR

VDD=3.6V,Inputs

F=217Hz,

Supply ripple rejection ratio ac-grounded with

-63

V(ripple)=200mV

Ci=2uF

Common mode rejection

ratio

VDD=3.6V,

Vic=1Vpp

CMRR

F=217Hz

-62

Start-up time from shutdown VDD=3.6V

http://www.hgsemi.com.cn

2014 JUN

3 / 13

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