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參數(shù)資料
型號： TLV320AIC3120IRHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： AUDIO AMPLIFIER, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 80/150頁
文件大小： 1507K
代理商： TLV320AIC3120IRHBR
0
–20
–40
–60
–80
–100
–120
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Magnitude
–
dB
FrequencyNormalizedtofS
ADCChannelResponseforDecimationFilterC
(RedLineCorrespondsto –60dB)
www.ti.com
SLAS653 – FEBRUARY 2010
5.5.4.4.3 Decimation Filter C
Filter C along with an AOSR of 32 is specially designed for 192-ksps operation for the ADC. The pass
band, which extends up to 0.11 × fS (corresponding to 21 kHz), is suited for audio applications.
Table 5-17. ADC Decimation Filter C, Specifications
Parameter
Condition
Value (Typical)
Unit
Filter gain from 0 to 0.11 fS
0…0.11 fS
±0.033
dB
Filter gain from 0.28 fS to 16 fS
0.28 fS…16 fS
–60
dB
Filter group delay
11/fS
s
Pass-band ripple, 8 ksps
0…0.11 fS
0.033
dB
Pass-band ripple, 44.1 ksps
0…0.11 fS
0.033
dB
Pass-band ripple, 48 ksps
0…0.11 fS
0.032
dB
Pass-band ripple, 96 ksps
0…0.11 fS
0.032
dB
Pass-band ripple, 192 ksps
0…20 kHz
0.086
dB
Figure 5-15. ADC Decimation Filter C, Frequency Response
5.5.4.5
ADC Data Interface
The decimation filter and signal processing block in the ADC channel pass 32-bit data words to the audio
serial interface once every cycle of ADC_fS. During each cycle of ADC_fS, a pair of identical data words
(for left and right channel) is output. The audio serial interface rounds the data to the required word length
of the interface before converting to serial data. Because the TLV320AIC3120 has only a mono ADC, it
passes the same data to both the left and right channels of the audio serial interface.
5.5.5
Updating ADC Digital Filter Coefficients During Record
When it is required to update the ADC digital filter coefficients during record, care must be taken to avoid
click and pop noise or even a possible oscillation noise. These artifacts can occur if the ADC coefficients
are updated without following the proper update sequence. The correct sequence is shown in Figure 5-16.
The values for the times listed are conservative and should be used for software purposes.
Copyright 2010, Texas Instruments Incorporated
APPLICATION INFORMATION
35
Product Folder Link(s): TLV320AIC3120
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV320AIC3120IRHBT 功能描述:接口—CODEC Low-Pwr 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
TLV320AIC31EVM 功能描述:音頻 IC 開發(fā)工具 TLV320AIC31 Eval Mod 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
TLV320AIC31EVM-PDK 功能描述:音頻 IC 開發(fā)工具 TLV320AIC31-PDK Eval Mod 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
TLV320AIC31IRHBR 功能描述:接口—CODEC Lo-Pwr Ster Codec for Port Aud/Teleph 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
TLV320AIC31IRHBRG4 功能描述:接口—CODEC Lo-Pwr Ster Codec for Port Aud/Teleph 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
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