- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358866 > LM4855 (National Semiconductor Corporation) Boomer AUDIO POWER AMPLIFIER Integrated Audio Amplifier System PDF資料下載
參數(shù)資料
| 型號(hào)： | LM4855 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Boomer AUDIO POWER AMPLIFIER Integrated Audio Amplifier System |
| 中文描述： | Boomer音頻功率放大器集成音頻放大器系統(tǒng) |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 1116K |
| 代理商： | LM4855 |
APPLICATION INFORMATION
SPI PIN DESCRIPTION
DATA: This is the serial data input pin.
CLK: This is the clock input pin.
ENB: This is the SPI enable pin and is active-high.
SPI OPERATION DESCRIPTION
The serial data bits are organized into a field which contains
8 bits of data defined by TABLE 1. The Data 0 to Data 2 bits
determine the output mode of the LM4855 as shown in
TABLE 2. The Data 3 to Data 7 bits determine the volume
level setting as illustrated by TABLE 3. For each SPI transfer,
TABLE 1. Bit Allocation
the data bits are written to the DATA pin with the least
significant bit (LSB) first. All serial data are sampled at the
rising edge of the CLK signal. Once all the data bits have
been sampled, ENB transitions from logic-high to logic-low
to complete the SPI sequence. All 8 bits must be received
before any data latch can occur. Any excess CLK and DATA
transitions will be ignored after the eighth rising clock edge
has occurred. For any data sequence longer than 8 bits, only
the first 8 bits will get loaded into the shift register and the
rest of the bits will be disregarded.
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
Mode Select
Mode Select
Mode Select
Volume Control
Volume Control
Volume Control
Volume Control
Volume Control
TABLE 2. Output Mode Selection
Output Mode #
0
1
2
3
4
5
6
7
R = Rin
L = Lin
P
IHF
= Phone_In_IHF
P
HS
= Phone_In_HS
SD = Shutdown Mode
MUTE = Mute Mode
G1 = gain from P
HS
to LOUT/ROUT
G2 = gain from LIN/ RIN to LOUT/ROUT
Default Mode upon device power-up is Output Mode 0
Data 2
0
0
0
0
1
1
1
1
Data 1
0
0
1
1
0
0
1
1
Data 0
0
1
0
1
0
1
0
1
SPKR
OUT
SD
12dB x P
IHF
MUTE
12dB x P
IHF
MUTE
12dB x P
IHF
MUTE
12dB x P
IHF
R
OUT
SD
SD
G1 x P
HS
G1 x P
HS
G2 x R
G2 x R
L
OUT
SD
SD
G1 x P
HS
G1 x P
HS
G2 x L
G2 x L
(G1 x P
HS
) + (G2 x R)
(G1 x P
HS
) + (G2 x R)
(G1 x P
HS
) + (G2 x L)
(G1 x P
HS
) + (G2 x L)
L
www.national.com
14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4857 | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4857GR | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4857ITL | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4857SP | Stereo 1.2W Audio Sub-system with 3D Enhancement |
| LM4859 | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:47; Connector Shell Size:40; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM48555 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ceramic Speaker Driver |
| LM48555TL | 制造商:Texas Instruments 功能描述:Audio Amp Speaker 1-CH Mono Class-AB 12-Pin uSMD T/R 制造商:Texas Instruments 功能描述:IC AMP POWER AUDIO SMD |
| LM48555TL/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 |
| LM48555TLBD | 功能描述:音頻 IC 開發(fā)工具 LM48555TL EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| LM48555TLX/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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。