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参数资料
| 型号： | LM4873LQX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 3 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC24 |
| 封装： | LLP-24 |
| 文件页数： | 21/25页 |
| 文件大小： | 963K |
| 代理商： | LM4873LQX/NOPB |
Electrical Characteristics for Bridged-Mode Operation (Notes 3, 15) (Continued)
The following specifications apply for V
DD= 5V unless otherwise specified. Limits apply for TA= 25C.
Symbol
Parameter
Conditions
LM4873
Units
(Limits)
Typical
Limit
THD+N = 10%, f = 1kHz (Note 20)
LM4873MTE-1, R
L =3
3.0
W
LM4873LQ, R
L =3
3.0
W
LM4873MTE-1, R
L =4
2.6
W
LM4873LQ, R
L =4
2.6
W
LM4873, R
L =8
1.5
W
THD+N = 1%, f = 1kHz, R
L =32
0.34
W
THD+N
Total Harmonic Distortion+Noise
20Hz
≤ f ≤ 20kHz, A
VD =2
LM4873MTE-1, R
L =4
,P
O =2W
0.3
LM4873LQ, R
L =4
,P
O =2W
LM4873, R
L =8
,P
O = 1W
0.3
%
PSRR
Power Supply Rejection Ratio
V
DD = 5V, VRIPPLE = 200mVRMS,RL =8
,
C
B = 1.0F
67
dB
X
TALK
Channel Separation
f = 1kHz, C
B = 1.0F
80
dB
SNR
Signal To Noise Ratio
V
DD = 5V, PO = 1.1W, RL =8
97
dB
Electrical Characteristics for Single-Ended Operation (Notes 3, 15)
The following specifications apply for V
DD= 5V unless otherwise specified. Limits apply for TA= 25C.
Symbol
Parameter
Conditions
LM4873
Units
(Limits)
Typical
Limit
V
OS
Output Offset Voltage
V
IN = 0V
5
50
mV (max)
P
O
Output Power
THD+N = 0.5%, f = 1 kHz, R
L =32
85
75
mW (min)
THD+N = 1%, f = 1 kHz, R
L =8
340
mW
THD+N = 10%, f = 1 kHz, R
L =8
440
mW
THD+N
Total Harmonic Distortion+Noise
A
V = 1, PO = 75mW, 20Hz
≤ f ≤ 20kHz,
R
L =32
0.2
%
PSRR
Power Supply Rejection Ratio
C
B = 1.0F, VRIPPLE = 200mV RMS,
f = 1kHz
52
dB
X
TALK
Channel Separation
f = 1kHz, C
B = 1.0F
60
dB
SNR
Signal To Noise Ratio
V
DD = 5V, PO = 340mW, RL =8
94
dB
Note 3: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device operates within the Operating Ratings. Specifications are not guaranteed for parameters where
no limit is given. The typical value however, is a good indication of device performance.
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θ JA, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX =(TJMAX T A)/θJA. For the LM4873, TJMAX = 150C. For the θJAs for different packages, please see the Application
Information section or the Absolute Maximum Ratings section.
Note 5: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 6: Machine model, 220 pF–240 pF discharged through all pins.
Note 7: The given
θJA is for an LM4873 packaged in an MXA20A with the Exposed-DAP soldered to an exposed 2in2 area of 1oz printed circuit board copper.
Note 8: The given
θJA is for an LM4873 packaged in an MXA20A with the Exposed-DAP soldered to an exposed 1in2 area of 1oz printed circuit board copper.
Note 9: The given
θJA is for an LM4873 packaged in an MXA20A with the Exposed-DAP not soldered to printed circuit board copper.
Note 10: The given
θJA is for an LM4873 packaged in an MXA28A with the Exposed-DAP soldered to an exposed 2in2 area of 1oz printed circuit board copper.
Note 11: The given
θJA is for an LM4873 packaged in an MXA28A with the Exposed-DAP soldered to an exposed 1in2 area of 1oz printed circuit board copper.
Note 12: The given
θJA is for an LM4873 packaged in an MXA28A with the Exposed-DAP not soldered to printed circuit board copper.
Note 13: The given
θJA is for an LM4873 packaged in an LQA24A with the Exposed-DAP soldered to an exposed 2in2 area of 1oz printed circuit board copper.
Note 14: The
θJA is specified for an LM4873 packaged in a BLA20AAB or TLA20AAA with their four ground connections soldered to a 3in2, 1oz copper plane.
Note 15: All voltages are measured with respect to the ground (GND) pins, unless otherwise specified.
Note 16: Typicals are specified at 25C and represent the parametric norm.
Note 17: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
LM4873
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4873MT | 制造商:Texas Instruments 功能描述: |
| LM4873MT/NOPB | 功能描述:IC AMP AUDIO PWR 3W STER 20TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4873MTE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM4873MTE/NOPB | 功能描述:音频放大器 Dual 2.1W Audio Amp Plus Stereo HdPh Fcn RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LM4873MTE-1 | 功能描述:IC AMP AUDIO PWR 3W STER 28TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
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