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參數(shù)資料
| 型號： | TAS5028APAG |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8 Channel Digital Audio PWM Processor |
| 中文描述： | 8通道數(shù)字音頻PWM處理器 |
| 文件頁數(shù)： | 30/82頁 |
| 文件大?。?/td> | 1226K |
| 代理商： | TAS5028APAG |
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Introduction
22
SLES112 — June 2004
TAS5028A
The interpolator, noise shaper, and PWM sections provide a PWM output with the following features:
Up to 8
×
oversampling.
8
×
at F
S
= 32 kHz, 38 kHz, 44.1 kHz, 48 kHz
4
×
at F
S
= 88.2 kHz, 96 kHz
2
×
at F
S
= 176.4 kHz, 192 kHz
5th order noise shaping
100-dB dynamic range 0 – 20 kHz (TAS5028A + TAS5111 system measured at speaker terminals)
THD < 0.01%
Adjustable maximum modulation limit of 93.8% to 99.2%
3.3-V digital signal
1.10.1
DC Blocking (High-Pass Enable / Disable)
Each input channel incorporates a first order digital high-pass filter to block potential dc components. The filter
–3 dB point is approximately 0.89-Hz at 44.1-kHz sampling rate. The high-pass filter can be enabled and
disabled via the I
2
C interface.
1.10.2
De-Emphasis Filter
For audio sources that have been pre-emphasized, a precision 50
μ
s/15
μ
s de-emphasis filter is provided to
support the sampling rates of 32 kHz, 44.1 kHz, and 48 kHz. Figure 1
17 shows a graph of the de-emphasis
filtering characteristics. De-emphasis is set using two bits in the system control register.
R
10
0
Frequency
kHz
3.18 (50
μ
s)
10.6 (15
μ
s)
Figure 1
17. De-emphasis Filter Characteristics
1.10.3
AM Interference Avoidance
Digital amplifiers can degrade AM reception as a result of their RF emissions. Texas Instruments’ patented
AM interference avoidance circuit provides a flexible system solution for a wide variety of digital audio
architectures. During AM reception, the TAS5028A adjusts the radiated emissions to provide an emission
clear zone for the tuned AM frequency. The inputs to the TAS5028A for this operation are the tuned AM
frequency, the IF frequency, and the sample rate. The sample rate is automatically detected.
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PDF描述 |
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| TAS5028APAGG4 | 8 Channel Digital Audio PWM Processor |
| TAS5028APAGR | 8 Channel Digital Audio PWM Processor |
| TAS5028APAGRG4 | 8 Channel Digital Audio PWM Processor |
| TAS5028PAGR | 8 Channel Digital Audio PWM Processor |
| TAS5028PAGRG4 | 8 Channel Digital Audio PWM Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TAS5028APAGG4 | 功能描述:音頻放大器 8Ch Dig Aud PWM Proc RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5028APAGR | 功能描述:音頻放大器 8Ch Dig Aud PWM Proc RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5028APAGRG4 | 功能描述:音頻放大器 8Ch Dig Aud PWM Proc RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5028PAG | 功能描述:音頻 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| TAS5028PAGG4 | 功能描述:音頻 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
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