參數(shù)資料
型號： MAX9888EVKIT+
廠商： Maxim Integrated Products
文件頁數(shù)： 96/115頁
文件大小： 0K
描述： KIT EVALUATION FOR MAX9888
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®, FLEXSOUND™
相關(guān)產(chǎn)品： MAX9888EWY+T-ND - IC CODEC AUDIO FLEXSOUND 63WLP
Stereo Audio CODEC
with FlexSound Technology
MAX9888
81
Figure 20. ALC Input vs. Output Examples
Figure 19. Playback Path Signal Processing Block Diagram
Playback Path Signal Processing
The IC playback signal path includes automatic level
control (ALC) and a 5-band parametric equalizer (EQ)
(Figure 19). The DAI1 and DAI2 playback paths include
separate ALCs controlled by a single set of registers.
Two completely separate parametric EQs are included
for the DAI1 and DAI2 playback paths.
Automatic Level Control
The automatic level control (ALC) circuit ensures maxi-
mum signal amplitude without producing audible clip-
ping. This is accomplished by a variable gain stage that
works on a sample by sample basis to increase the gain
up to 12dB. A look-ahead circuit determines if the next
sample exceeds full scale and reduces the gain so that
the sample is exactly full scale.
A programmable low signal threshold determines the
minimum signal amplitude that is amplified. Select a
threshold that prevents the amplification of background
noise. When the signal level drops below the low signal
threshold, the ALC reduces the gain to 0dB until the sig-
nal increases above the threshold. Figure 20 shows an
example of ALC input vs. output curves.
The ALC can optionally be configured in dual-band
mode. In this mode, the input signal is filtered into two
bands with a 5kHz center frequency. Each band is
routed through independent ALCs and then summed
together. In multiband mode, both bands use the same
parameters.
0
OUTPUT SIGNAL
(dBFS)
OUTPUT SIGNAL
(dBFS)
OUTPUT SIGNAL
(dBFS)
INPUT
SIGNAL
(dBFS)
INPUT
SIGNAL
(dBFS)
INPUT
SIGNAL
(dBFS)
LOW-LEVEL
THRESHOLD
-12
0
LOW-LEVEL
THRESHOLD
-12
0
LOW-LEVEL
THRESHOLD
-12
0
ALC WITH ALCTH
≠ 000
ALC WITH ALCTH = 000
ALC DISABLED
EQ1EN
EQ2EN
DVEQ1:
0dB TO -15dB
DV1G:
0/6/12/18dB
DV2:
0dB TO -15dB DCB2
DVEQ2:
0dB TO -15dB
MULTIBAND ALC
EXCURSION LIMITER
DV1:
0dB TO -15dB MODE1
DVFLT
DALEN
MIXDAR
DACL
DAREN
DACR
+
MIX
MIXDAL
MIX
5-BAND
PARAMETRIC
EQ
5-BAND
PARAMETRIC
EQ
AUDIO/
FILTERS
AUDIO/
VOICE
FILTERS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9888EVKIT+ 功能描述:音頻 IC 開發(fā)工具 MAX9888 Eval Kit 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
MAX9888EWY+T 功能描述:接口—CODEC Stereo 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
MAX9889EWO+T 功能描述:接口—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
MAX988ESA 功能描述:校驗(yàn)器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
MAX988ESA+ 功能描述:校驗(yàn)器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
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