參數(shù)資料
型號： MAX9856ETL+
廠商： Maxim Integrated Products
文件頁數(shù)： 29/46頁
文件大?。?/td> 0K
描述： IC CODEC AUDIO LP 40TQFN-EP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 50
類型： 音頻編解碼器
數(shù)據(jù)接口： 串行
分辨率（位）： 18 b
ADC / DAC 數(shù)量： 2 / 2
三角積分調(diào)變： 是
S/N 比，標(biāo)準(zhǔn) ADC / DAC (db)： 77 / 91
動態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 85 / 91
電壓 - 電源，模擬： 1.71 V ~ 3.6 V
電壓 - 電源，數(shù)字： 1.71 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 40-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 40-TQFN-EP（5x5）
包裝： 管件
產(chǎn)品目錄頁面： 1392 (CN2011-ZH PDF)
MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
______________________________________________________________________________________
35
Audio Outputs
The MAX9856 features stereo headphone amplifiers and
line output amplifiers with DirectDrive technology.
DirectDrive eliminates the need for bulky and expensive
DC-blocking capacitors on the outputs. The DirectDrive
biasing scheme is illustrated in Figure 4. The head-
phone outputs have separate left/right volume controls
while the line outputs produce a fixed level signal.
The audio outputs feature ground sensing, which is
intended to reduce the effect of ground noise. In many
systems, the ground return for line outputs and head-
phone jacks is used by other functions such as video
signals and microphone signals. The sharing of ground
can result in interference that is audible. The MAX9856’s
ground sense provides a path for the interfering signal to
be input and combined with the output audio signal to
reduce the audibility of the interference. Connect HGND-
SNS directly to the ground terminal of the headphone jack
to enable ground sense on the headphones (Figure 5).
Similarly connect LGNDSNS directly to the ground termi-
nal of a line output jack to enable ground sense on the
line outputs. If ground sense is not required, connect
HGNDSNS and LGNDSNS to AGND. Table 13 lists the
audio output control registers and bit description.
AVDD
AVDD/2
GND
CONVENTIONAL AMPLIFIER BIASING SCHEME
DirectDrive AMPLIFIER BIASING SCHEME
AVDD
AGND
SVSS
Figure 4. Traditional Amplifier Output vs. MAX9856 DirectDrive Output
GND
HPR
HPL
HPR
HGNDSNS
Figure 5. Ground Sense Connection
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參數(shù)描述
MAX9856ETL/V+ 功能描述:接口—CODEC Low-Power Audio Codec With Directdrive. Headphone Amplifiers RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
MAX9856ETL/V+T 功能描述:接口—CODEC Low-Power Audio Codec With Directdrive. Headphone Amplifiers RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
MAX9856ETL+ 功能描述:接口—CODEC Stereo Audio CODEC w/DirectDrive Amp RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
MAX9856ETL+T 功能描述:接口—CODEC Stereo Audio CODEC w/DirectDrive Amp RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
MAX9856EVKIT+ 功能描述:音頻 IC 開發(fā)工具 Evaluation Kit for the MAX9856 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V
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