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參數(shù)資料
| 型號(hào)： | LM4873MTE |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Dual 2.1W Audio Amplifier Plus Stereo Headphone Function |
| 中文描述： | 2.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封裝： | 6.50 X 4.40 MM, 0.90 MM HEIGHT, TSSOP-20 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大小： | 532K |
| 代理商： | LM4873MTE |
Electrical Characteristics for Bridged-Mode Operation
(Notes 3, 4) (Continued)
The following specifications apply for V
DD
= 5V unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4873
Units
(Limits)
Typical
(Note
17)
0.3
Limit
(Note
18)
THD+N
Total Harmonic Distortion+Noise
20 Hz
≤
f
≤
20 kHz, A
VD
= 2
LM4873MTE-1, R
L
= 4
, P
O
= 2W
LM4873, R
L
= 8
, P
O
= 1W
V
DD
= 5V, V
RIPPLE
= 200 mV
RMS
, R
L
= 8
,
C
B
= 1.0 μF
f = 1 kHz, C
B
= 1.0 μF
V
DD
= 5V, P
O
= 1.1W, R
L
= 8
0.3
67
%
dB
PSRR
Power Supply Rejection Ratio
X
TALK
SNR
Channel Separation
Signal To Noise Ratio
80
97
dB
dB
Electrical Characteristics for Single-Ended Operation
(Notes 3, 4)
The following specifications apply for V
DD
= 5V unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4873
Units
(Limits)
Typical
(Note
17)
5
85
340
440
0.2
Limit
(Note
18)
50
75
V
OS
P
O
Output Offset Voltage
Output Power
V
IN
= 0V
THD = 0.5%, f = 1 kHz, R
L
= 32
THD+N = 1%, f = 1 kHz, R
L
= 8
THD+N = 10%, f = 1 kHz, R
L
= 8
A
V
= 1, P
O
= 75 mW, 20 Hz
≤
f
≤
20 kHz,
R
L
= 32
C
B
= 1.0 μF, V
RIPPLE
= 200 mV
RMS
,
f = 1 kHz
f = 1 kHz, C
B
= 1.0 μF
V
DD
= 5V, P
O
= 340mW, R
L
= 8
mV (max)
mW (min)
mW
mW
%
THD+N
Total Harmonic Distortion+Noise
PSRR
Power Supply Rejection Ratio
52
dB
X
TALK
SNR
Channel Separation
Signal To Noise Ratio
60
94
dB
dB
Note 3:
All voltages are measured with respect to the ground pins, 2, 7, and 15, unless otherwise specified.
Note 4:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC andAC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
Note 5:
The
θ
JA
given is for an MXA20A package whose exposed-DAP is soldered to an exposed 2in
2
piece of 1 ounce printed circuit board copper.
Note 6:
The
θ
JA
given is for an MXA20A package whose exposed-DAP is soldered to an exposed 1in
2
piece of 1 ounce printed circuit board copper.
Note 7:
The
θ
JA
given is for an MXA20A package whose exposed-DAP is not soldered to any copper.
Note 8:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is soldered to an exposed 2in
2
piece of 1 ounce printed circuit board copper.
Note 9:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is soldered to an exposed 1in
2
piece of 1 ounce printed circuit board copper.
Note 10:
The
θ
JA
given is for an MXA28A package whose exposed-DAP is not soldered to any copper.
Note 11:
When driving 3
loads from a 5V supply, the LM4873MTE or LM4873MTE-1 must be mounted to the circuit board and forced-air cooled (450 linear-feet
per minute).
Note 12:
When driving 4
loads from a 5V supply, the LM4873MTE or LM4873MTE-1 must be mounted to the circuit board.
Note 13:
Output power is measured at the device terminals.
Note 14:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
,
θ
, and the ambient temperature T
. The maximum
allowable power dissipation is P
= (T
T
)/
θ
JA
. For the LM4873, T
JMAX
= 150C. For the
θ
JA
s for different packages, please see the Application Informa-
tion section or the Absolute Maximum Ratings section.
Note 15:
Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 16:
Machine model, 220 pF–240 pF discharged through all pins.
Note 17:
Typicals are measured at 25C and represent the parametric norm.
Note 18:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 19:
The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.
L
www.national.com
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4873MTE/NOPB | 功能描述:音頻放大器 Dual 2.1W Audio Amp Plus Stereo HdPh Fcn 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4873MTE-1 | 功能描述:IC AMP AUDIO PWR 3W STER 28TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4873MTE-1/NOPB | 制造商:Texas Instruments 功能描述:IC AMP AUDIO PWR 3W STER 28TSSOP |
| LM4873MTEX | 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4873MTEX/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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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