- 您现在的位置：买卖IC网 > PDF目录30756 > LM4914MH/NOPB (NATIONAL SEMICONDUCTOR CORP) 0.085 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 PDF资料下载
参数资料
| 型号： | LM4914MH/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.085 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | TSSOP-10 |
| 文件页数： | 13/16页 |
| 文件大小： | 767K |
| 代理商： | LM4914MH/NOPB |
External Components Description
Components
Functional Description
1.
R
i
This is the input resistor for the inverting input that, along with the 62.5k
internal feedback resistor R
f, sets
the first stage’s closed-loop gain. The overall SE gain is A
V (SE) = 62.5k
/R
i, whereas the overall BTL gain
is A
V (BTL) = -125k
/R
i. Input resistance Ri and input capacitance Ci form a high pass filter. The filter’s
cutoff frequency is filter’s cutoff frequency is f
C =1/2
πR
iCi.
2.
C
i
This is the input coupling capacitor. It blocks DC voltage at the amplifier’s inverting input. C
i and Ri create a
highpass filter. The filter’s cutoff frequency is f
C =1/2
πR
iCi. Refer to the Application Information section,
SELECTING EXTERNAL COMPONENTS, for an explanation of determining C
i’s value.
3.
C
This is the output coupling capacitor. Refer to the Application Information section, SELECTING EXTERNAL
COMPONENTS, for an explanation of determining C
C’s value.
4.
C
S
The supply bypass capacitor. Refer to the POWER SUPPLY BYPASSING section for information about
properly placing, and selecting the value of this capacitor.
5.
C
B
This capacitor filters the half-supply voltage present on the BYPASS pin. Refer to the Application Information
section, SELECTING EXTERNAL COMPONENTS, for information about properly placing, and selecting the
value of this capacitor.
Typical Performance Characteristics
THD+N vs Output Power
V
DD = 3V, BTL, f = 1kHz
A
V = 8dB, RL =8
THD+N vs Output Power
V
DD = 3V, BTL
A
V = 8dB, RL =8
200634C4
200634C6
THD+N vs Output Power
V
DD = 3V, Stereo
A
V = 1.9dB, RL =32
THD+N vs Output Power
V
DD = 5V, BTL, f = 1kHz
A
V = 8dB, RL =8
200634C8
200634C9
LM4914
www.national.com
6
相关PDF资料 |
PDF描述 |
|---|---|
| LM4915LQ/NOPB | 0.4 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC8 |
| LM4918LQ/NOPB | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, QCC32 |
| LM4919MM/NOPB | 0.014 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| LM4921ITLX/NOPB | SPECIALTY CONSUMER CIRCUIT, PBGA20 |
| LM4990ITL/NOPB | 2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4915 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Pseudo-Differential Mono Headphone Amplifier with Fixed 6dB Gain |
| LM49150 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Mono Class D Audio Subsystem with Earpiece Driver and Stereo Ground Referenced Headphone Amplifiers |
| LM49150TL | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Mono Class D Audio Subsystem with Earpiece Driver and Stereo Ground Referenced Headphone Amplifiers |
| LM49150TL/NOPB | 功能描述:音频放大器 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 |
| LM49150TLEVAL | 功能描述:音频 IC 开发工具 LM49150TL EVAL BOARD RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
发布紧急采购，3分钟左右您将得到回复。