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參數(shù)資料
| 型號： | LM4857GR |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA49 |
| 文件頁數(shù)： | 9/38頁 |
| 文件大?。?/td> | 1517K |
| 代理商： | LM4857GR |
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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 T
A
= 25C.
Symbol
Parameter
Conditions
LM4857
Limits
(Notes
7, 8)
Units
(Limits)
Typical
(Note 6)
P
O
Output Power
Speaker; THD+N = 1%;
f = 1kHz; 8
BTL
Headphone; THD+N = 1%;
f = 1kHz; 32
SE
Earpiece; THD+N = 1%;
f = 1kHz; 32
BTL; CD4 = 0
Earpiece; THD+N = 1%;
f = 1kHz; 32
BTL; CD4 = 1
LD5 = RD5 = 0
Speaker; P
O
= 200mW;
f = 1kHz; 8
BTL
Headphone; P
O
= 10mW;
f = 1kHz; 32
SE
Earpiece; P
O
=10mW;
f = 1kHz; 32
BTL; CD4 = 0
Line Out; V
O
= 1V
RMS
;
f = 1kHz; 5k
SE
Speaker; LD5 = RD5 = 0
Earpiece; LD5 = RD5 = 0
A-weighted; 0dB gain; (Note 11)
LD5 = RD5 = 0; All 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
Earpiece; Mode 6
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; All 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
Earpiece; Mode 6
Earpiece; Mode 11
Line Out; Mode 5
Line Out; Mode 10
Line Out; Mode 15
400
320
mW (min)
25
20
mW (min)
30
22
mW (min)
30
mW
THD+N
Total Harmonic Distortion Plus
Noise
0.05
%
0.04
%
0.06
%
0.015
%
V
OS
Offset Voltage
5
5
40
30
mV (max)
mV (max)
N
OUT
Output Noise
27
38
10
14
13
18
21
11
14
17
μV
μV
μV
μV
μV
μV
μV
μV
μV
μV
PSRR
Power Supply Rejection Ratio
70
65
87
75
76
70
67
88
74
71
dB
55
dB (min)
dB
dB (min)
dB
dB
dB (min)
dB
dB
dB (min)
62
57
58
L
www.national.com
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相關代理商/技術參數(shù) |
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|---|---|
| LM4857ITL | 制造商:Texas Instruments 功能描述:1.2W STEREO SUBSYST 3D SMD 4857 |
| LM4857ITL/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4857ITLBD | 功能描述:BOARD EVALUATION LM4857ITL RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| LM4857ITLX/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4857SP | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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