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參數(shù)資料
| 型號： | MAX9856ETL+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 25/46頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CODEC AUDIO LP 40TQFN-EP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 類型： | 音頻編解碼器 |
| 數(shù)據接口： | 串行 |
| 分辨率（位）： | 18 b |
| ADC / DAC 數(shù)量： | 2 / 2 |
| 三角積分調變： | 是 |
| S/N 比，標準 ADC / DAC (db)： | 77 / 91 |
| 動態(tài)范圍，標準 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 |
| 供應商設備封裝： | 40-TQFN-EP（5x5） |
| 包裝： | 管件 |
| 產品目錄頁面： | 1392 (CN2011-ZH PDF) |
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Analog Inputs
The MAX9856 features various analog inputs. All inputs
have independent gain control for maximum flexibility.
AUXIN is a mono auxiliary input that can be used for
mixing alarms, beeps, and sound effects into the head-
phone outputs or ADC input. The AUXIN signal has a
dedicated PGA for gain adjustment and can be mixed
into the headphone output signal directly, bypassing
the output mixer and volume control. AUXIN can also
serve as an input for making precise measurements in
the system. In this mode, the PGA is bypassed,
increasing the impedance of the input, and is directly
connected to the ADC.
Three microphone inputs are available. Two are pseudo-
differential inputs with a shared ground connected to the
inverting input of the microphone preamplifier. The third
is a fully differential input. Stereo microphones that share
a common return path can take advantage of the
pseudo-differential configuration by connecting the com-
mon return to the MICGND, canceling common-mode
noise. Figure 3 shows the typical application circuit for
both single-ended and differential microphones. The
microphone preamplifier and PGA provide a wide range
of gain options. The microphone inputs can also be used
as additional line inputs when the gain is set to 0dB.
A single low-noise bias voltage output is available
(MICBIAS) to bias microphones from a clean supply
with an external bias resistor. There are two selectable
microphone bias voltages that can be selected
depending on the power-supply voltage. Table 12 lists
the audio input control registers and bit description.
MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
______________________________________________________________________________________
31
REG
B7
B6
B5
B4
B3
B2
B1
B0
0x11
PGADS
0x12
0
PGAAUX
0x13
0
PGAL1
0x14
0
PGAL2
0x15
0
PAENL
PGAML
0x16
0
PAENR
PGAMR
0x17
0
MMIC
MBSEL
0
LMICDIF
Table 12. Audio Input Control Registers
MICL/MICR
MICBIAS
JACKSNS
(a)
2.2k
Ω
MICGND
INLP
MICBIAS
JACKSNS
(b)
2.2k
Ω
INLN
2.2k
Ω
Figure 3. Typical Microphone Connections: (a) Pseudo-Differential, (b) Differential
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相關代理商/技術參數(shù) |
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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