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LM4857GR Datasheet(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM4857GR
Descripción Electrónicos  Stereo 1.2W Audio Sub-system with 3D Enhancement
Download  38 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4857GR Datasheet(HTML) 9 Page - National Semiconductor (TI)

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Audio Amplifier Electrical Characteristics V
DD = 3.0V (Notes 1, 2) (Continued)
The following specifications apply for V
DD = 3.0V, unless otherwise specified. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
LM4857
Units
(Limits)
Typical
(Note 6)
Limits (Notes
7, 8)
P
O
Output Power
Speaker; THD+N = 1%;
f = 1kHz; 8
Ω BTL
400
320
mW (min)
Headphone; THD+N = 1%;
f = 1kHz; 32
Ω SE
25
20
mW (min)
Earpiece; THD+N = 1%;
f = 1kHz; 32
Ω BTL; CD4 = 0
30
22
mW (min)
Earpiece; THD+N = 1%;
f = 1kHz; 32
Ω BTL; CD4 = 1
30
mW
THD+N
Total Harmonic Distortion Plus
Noise
LD5=RD5=0
Speaker; P
O= 200mW;
f = 1kHz; 8
Ω BTL
0.05
%
Headphone; P
O= 10mW;
f = 1kHz; 32
Ω SE
0.04
%
Earpiece; P
O=10mW;
f = 1kHz; 32
Ω BTL; CD4 = 0
0.06
%
Line Out; V
O=1VRMS;
f = 1kHz; 5k
Ω SE
0.015
%
V
OS
Offset Voltage
Speaker; LD5 = RD5 = 0
5
40
mV (max)
Earpiece; LD5 = RD5 = 0
5
30
mV (max)
N
OUT
Output Noise
A-weighted; 0dB gain; (Note 11)
LD5 = RD5 = 0; All Inputs Terminated
Speaker; Mode 2, 3, 7, 8
27
µV
Speaker; Mode 12, 13
38
µV
Headphone; Mode 3, 4, 8, 9
10
µV
Headphone; Mode 13, 14
14
µV
Earpiece; Mode 1
13
µV
Earpiece; Mode 6
18
µV
Earpiece; Mode 11
21
µV
Line Out; Mode 5
11
µV
Line Out; Mode 10
14
µV
Line Out; Mode 15
17
µV
PSRR
Power Supply Rejection Ratio
f = 217Hz, V
rip = 200mVpp;CB = 2.2µF;
0dB gain; (Note 11)
LD5 = RD5 = 0; All Audio Inputs
Terminated
Speaker; Mode 2, 3, 7, 8
70
dB
Speaker; Mode 12, 13,
65
55
dB (min)
Headphone; Mode 3, 4, 8, 9
87
dB
Headphone; Mode 13, 14
75
62
dB (min)
Earpiece; Mode1
76
dB
Earpiece; Mode 6
70
dB
Earpiece; Mode 11
67
57
dB (min)
Line Out; Mode 5
88
dB
Line Out; Mode 10
74
dB
Line Out; Mode 15
71
58
dB (min)
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