參數(shù)資料
型號： MAX98089EVKIT#WLP
廠商： Maxim Integrated Products
文件頁數(shù)： 98/131頁
文件大?。?/td> 0K
描述： KIT EVAL FOR MAX98089-WLP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
系列： DirectDrive®
主要目的： 音頻編解碼器
嵌入式： 是，DSP
已用 IC / 零件： MAX98089
主要屬性： 2.8 V ~ 5.5 V 輸入電壓
已供物品： 板，線纜，軟件
Low-Power, Stereo Audio Codec
with FlexSound Technology
Microphone Inputs
The device includes three differential microphone inputs
and a low-noise microphone bias for powering the micro-
phones (Figure 6). One microphone input can also be con-
figured as a digital microphone input accepting signals
from up to two digital microphones. Any two microphones,
analog or digital, can be recorded simultaneously.
In the typical application, one microphone input is used
for the handset microphone and the other is used as an
accessory microphone. In systems using a background
noise microphone, INA can be retasked as another
microphone input.
In systems where the codec is not the only device
recording microphone signals, connect microphones to
MIC2P/MIC2N and EXTMICP/EXTMICN. MIC1P/MIC1N
then become outputs that route the microphone signals
to an external device as needed. Two devices can then
record microphone signals without needing external
analog switches.
Analog microphone signals are amplified by two stages
of gain and then routed to the ADCs. The first stage offers
selectable 0dB, 20dB, or 30dB settings. The second
stage is a programmable-gain amplifier (PGA) adjustable
from 0dB to 20dB in 1dB steps. To maximize the signal-
to-noise ratio, use the gain in the first stage whenever
possible. Zero-crossing detection is included on the PGA
to minimize zipper noise while making gain changes.
Figure 6. Microphone Input Block Diagram
MIC1P/
DIGMICDATA
MICBIAS
MBEN
MCLK
REG
MIC1N/
DIGMICCLK
MIC2BYP
INABYP
EXTMIC
PA1EN:
0/20/30dB
PGAM1:
+20dB TO 0dB
MIX
MIXADL
MIXADR
ADCL
EXTMIC
PA2EN:
0/20/30dB
PGAINA:
+20dB TO -6dB
PGAINA:
+20dB TO -6dB
MIC2P
MIC2N
INA1/EXTMICP
PGAM1:
+20dB TO 0dB
AGC CONTROL
INADIFF
ADLEN
ADREN
INA2/EXTMICN
ADCR
CLOCK
CONTROL
Maxim Integrated
69
MAX98089
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX98089EWY+ 制造商:Maxim Integrated Products 功能描述:STEREO AUDIO CODEC WITH FLEXSOUND TUNING TECHNOLOGY AND BASI - Rail/Tube
MAX98089EWY+T 功能描述:接口—CODEC Audio Codec 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
MAX98090AETL+ 功能描述:接口—CODEC 5V 130mW Stereo Headphone 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
MAX98090AETL+T 功能描述:接口—CODEC 5V 130mW Stereo Headphone 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
MAX98090AEWJ+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
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