參數(shù)資料
型號： MAX9702ETI+
廠商： Maxim Integrated Products
文件頁數(shù)： 16/31頁
文件大?。?/td> 0K
描述： IC AMP AUDIO PWR 1.8W D 28TQFN
標準包裝： 60
系列： DirectDrive®
類型： D 類
輸出類型： 2-通道（立體聲）帶立體聲耳機
在某負載時最大輸出功率 x 通道數(shù)量： 1.8W x 2 @ 4 歐姆; 45mW x 2 @ 32 歐姆
電源電壓： 2.5 V ~ 5.5 V
特點： 消除爆音，差分輸入，I²C，靜音，短路和熱保護，關(guān)機
安裝類型： 表面貼裝
供應商設備封裝： 28-TQFN-EP（5x5）
封裝/外殼： 28-WFQFN 裸露焊盤
包裝： 管件
Command Register
The MAX9702 has one command register that is used to
set speaker and headphone gain, select an input mode,
and enable/disable shutdown. Table 3 describes the
function of the bits contained in the command register.
Programmable Speaker Gain
The MAX9702 has eight internally set speaker gains
selected by B0–B2 (see Table 4).
Programmable Headphone Gain
The MAX9702 has four headphone gain settings select-
ed by B3 and B4 (see Table 5).
Programmable Input Modes
The MAX9702 features a multiplexer that selects
between the stereo and mono inputs. The mux also
acts as a mixer when the mono and stereo inputs are
enabled at the same time. The MUTE function disables
the input signal to the output. All modes are selected
through B5 and B6 (see Table 6).
The MIX function attenuates and mixes the MONO and
STEREO signals. Each input signal is attenuated by
6dB prior to being mixed. This attenuation preserves
headroom at the output. The output signal is represent-
ed by the following equation when in MIX mode:
where AV is the amplifier gain.
OUT
or HP
IN
INM
AV
_( )
_ _
_
+
()
=
+
×
2
MAX9702
1.8W, Filterless, Stereo, Class D Audio Power
Amplifier and DirectDrive Stereo Headphone Amplifier
______________________________________________________________________________________
23
BIT
FUNCTION
DEFAULT
B0
Speaker gain-setting bit
0
B1
Speaker gain-setting bit
0
B2
Speaker gain-setting bit
1
B3
Headphone gain-setting bit
1
B4
Headphone gain-setting bit
0
B5
MONO enable bit (0 = Mute)
0
B6
STEREO enable bit (0 = Mute)
1
B7
Shutdown bit (1 = normal, 0 =
shutdown)
1
Table 3. Command Bits and Description
B4
B3
FUNCTION
GAIN (dB)
0
Headphone gain
-2
01
Headphone gain
(default)
+1
1
0
Headphone gain
+4
1
Headphone gain
+7
Table 5. Programmable Headphone Gain
B6
B5
FUNCTION
0
MUTE (no input on the output)
0
1
MONO (MONO input sent to the output)
10
STEREO (left and right inputs sent to the
outputs) (default)
11
MIX (MONO and STEREO inputs are
mixed and output)
Table 6. Programmable Input Modes
B2
B1
B0
FUNCTION
GAIN
(dB)
0
Speaker gain
+0
0
1
Speaker gain
+3
0
1
0
Speaker gain
+6
0
1
Speaker gain
+9
10
0
Speaker gain
+12
1
0
1
Speaker gain
+15
1
0
Speaker gain
+18
1
Speaker gain
+21
Table 4. Programmable Speaker Gain
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9702ETI+ 功能描述:音頻放大器 1.8W Filterless Class D Audio Amp 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9702ETI+T 功能描述:音頻放大器 1.8W Filterless Class D Audio Amp 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
MAX9702EUI+ 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TSSO - Rail/Tube
MAX9702EUI+T 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH/SPKR 2CH STEREO 1.8W/0.045W CLS-AB/CLS-D 28TSSO - Tape and Reel
MAX9702EVCMODU 功能描述:放大器 IC 開發(fā)工具 MAX9702/2B Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V
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