Datasheet > LM4857ITL

LM4857ITL

更新时间： 2024-01-29 07:04:05

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
38页	1511K
描述
Stereo 1.2W Audio Sub-system with 3D Enhancement

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数据手册

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LM4857ITL 数据手册

Audio Amplifier Electrical Characteristics V_DD= 5.0V (Notes 1, 2) (Continued)

The following specifications apply for V_DD= 5.0V, unless otherwise specified. Limits apply for T_A= 25˚C.

Symbol

Parameter

Conditions

LM4857

Units

(Limits)

Typical Limits (Notes

(Note 6)

7, 8)

A-weighted, 0dB gain; (Note 11)

LD5 = RD5 = 0; Audio Inputs Terminated

Speaker; Mode 2, 3, 7, 8

Speaker; Mode 12, 13

Headphone; Mode 3, 4, 8, 9

Headphone; Mode 13, 14

Earpiece; Mode 1; CD4 = 0

Earpiece; Mode 6

µV

N_OUT

Output Noise

Earpiece; Mode 11

Line Out; Mode 5

Line Out; Mode 10

Line Out; Mode 15

f = 217Hz; V_rip= 200mV_pp; C_B= 2.2µF;

0dB gain; (Note 11)

LD5 = RD5 = 0; Audio Inputs Terminated

Speaker; Mode 2, 3, 7, 8

Speaker; Mode 12, 13,

Headphone; Mode 3, 4, 8, 9

Headphone; Mode 13, 14

Earpiece; Mode1

dB (min)

PSRR

Power Supply Rejection Ratio

Earpiece; Mode 6

Earpiece; Mode 11

dB (min)

Line Out; Mode 5

Line Out; Mode 10

Line Out; Mode 15

dB (min)

LD5 = RD5 = 0

Loudspeaker; P_O= 400mW;

f = 1kHz

Xtalk

T_WU

Crosstalk

Headphone; P_O= 15mW;

f = 1kHz

CD5 = 0; C_B= 2.2µF

CD5 = 1; C_B= 2.2µF

120

230

Wake-up Time

Audio Amplifier Electrical Characteristics V_DD= 3.0V (Notes 1, 2)

The following specifications apply for V_DD= 3.0V, unless otherwise specified. Limits apply for T_A= 25˚C.

Symbol

Parameter

Conditions

LM4857

Units

(Limits)

Typical Limits (Notes

(Note 6)

7, 8)

V_IN= 0V, No load;

LD5 = RD5 = 0 (Note 9)

Mode 1, 6, 11

5.5

4.5

mA (max)

µA (max)

I_DD

Supply Current

Mode 4, 5, 9, 10, 14, 15

Mode 2, 3, 7, 8, 12, 13

Mode 0 (Note 9)

7.5

2.5

11.2

0.06

I_SD

P_O

Shutdown Current

Output Power

LM4857SP

Speaker; THD+N = 1%;

f = 1kHz; 4Ω BTL

530

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1...5 6 789 10 11...38

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