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| 型號(hào)： | MAX9888EVKIT+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 14/115頁(yè) |
| 文件大?。?/td> | 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 |
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Stereo Audio CODEC
with FlexSound Technology
MAX9888
110
While many configuration options in the IC can be made
while the device is operating, some registers should
only be adjusted when the corresponding audio path is
disabled. Table 40 lists the registers that are sensitive
during operation. Either disable the corresponding audio
path or set SHDN = 0 while changing these registers.
Component Selection
Optional Ferrite Bead Filter
In applications where speaker leads exceed 20mm,
additional EMI suppression can be achieved by using a
filter constructed from a ferrite bead and a capacitor to
ground (Figure 41). Use a ferrite bead with low DC resis-
tance, high-frequency (> 600MHz) impedance between
100I and 600I, and rated for at least 1A. The capacitor
value varies based on the ferrite bead chosen and the
actual speaker lead length. Select a capacitor less than
1nF based on EMI performance.
Input Capacitor
An input capacitor, CIN, in conjunction with the input
impedance of the IC line inputs forms a highpass filter
that removes the DC bias from an incoming analog
signal. The AC coupling capacitor allows the amplifier
to automatically bias the signal to an optimum DC level.
Assuming zero-source impedance, the -3dB point of the
highpass filter is given by:
-3dB
IN IN
1
f
2 R C
=
π
Choose CIN so that f-3dB is well below the lowest fre-
quency of interest. For best audio quality use capacitors
whose dielectrics have low-voltage coefficients, such as
tantalum or aluminum electrolytic. Capacitors with high-
voltage coefficients, such as ceramics, may result in
increased distortion at low frequencies.
Charge-Pump Capacitor Selection
Use capacitors with an ESR less than 100mI for optimum
performance. Low-ESR ceramic capacitors minimize the
output resistance of the charge pump. Most surface-
mount ceramic capacitors satisfy the ESR requirement.
For best performance over the extended temperature
range, select capacitors with an X7R dielectric.
Table 40. Registers That Are Sensitive to Changes During Operation
Figure 41. Optional Class D Ferrite Bead Filter
REGISTER
DESCRIPTION
0x10 to 0x13, 0x19 to 0x1B
Clock Control Registers
0x14 to 0x17, 0x1C to 0x1F
Digital Audio Interface Configuration
0x18, 0x20
Digital Passband Filters
0x24 to 0x29
Analog Mixers
0x50 to 0xC7
Digital Signal Processing Coefficients
MAX9888
SPK_P
SPK_N
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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(kāi)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(píng)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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