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参数资料
| 型号： | LM4681SQ |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and I2C/SPI Volume Control |
| 中文描述： | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC48 |
| 封装： | LLP-48 |
| 文件页数： | 8/19页 |
| 文件大小： | 983K |
| 代理商： | LM4681SQ |
General Features (Continued)
8. If ENABLE is logic-low for more than 8 CLK pulses then
only the first 8 data bits will be latched and activated at rising
edge of eighth CLK.
9. ENABLE must remain logic-high for at least 50ns (t
EL ).
10. Coincidental rising or falling edges of CLK and ENABLE
are not allowed. If CLK is to be held logic-high after the data
transmission, the falling edge of CLK must occur at least
50ns (t
CS ) before ENABLE transitions to logic-low for the
next set of data.
Volume Control
The internal Stereo Volume Control is set by changing bits 0
through 4 in the SPI interface, as shown in table 3 below.
TABLE 1. Volume Control Settings
Gain (dB)
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
HP Outputs
Class D
Outputs
–64.94
–48.03
0000
0
–64.94
–48.03
0000
1
–56.94
–36.03
0001
0
–47.94
–31.03
0001
1
–42.94
–26.03
0010
0
–37.94
–21.03
0010
1
–33.94
–17.03
0011
0
–31.94
–15.03
0011
1
–28.94
–12.03
0100
0
–25.94
–9.03
0100
1
–22.94
–6.03
0101
0
–20.94
–4.03
0101
1
–18.94
–2.03
0110
0
–16.94
–0.03
0110
1
–14.94
1.97
0111
0
–12.94
3.97
0111
1
–10.94
5.97
1000
0
–8.94
7.97
1000
1
–6.94
9.97
1001
0
–4.94
11.97
1001
1
–2.94
13.97
1010
0
–0.94
15.97
1010
1
1.06
17.97
1011
0
3.06
19.97
1011
1
6.06
22.97
1100
0
7.07
23.97
1100
1
8.06
24.97
1101
0
9.06
25.97
1101
1
10.06
26.97
1110
0
11.06
27.97
1110
1
12.06
28.97
1111
0
13.06
29.97
1111
1
LM4681
www.national.com
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4681SQ/NOPB | 功能描述:IC AMP AUDIO PWR 10W STER 48LLP 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) |
| LM4681SQX/NOPB | 功能描述:IC AMP AUDIO PWR 10W STER 48LLP 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) |
| LM4682 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and DC Volume Control |
| LM4682B E WAF | 制造商:Texas Instruments 功能描述: |
| LM4682SQ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and DC Volume Control |
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