參數(shù)資料
型號: TAS5028APAGG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: GREEN, PLASTIC, TQFP-64
文件頁數(shù): 24/82頁
文件大?。?/td> 1347K
代理商: TAS5028APAGG4
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 FS = 32 kHz, 38 kHz, 44.1 kHz, 48 kHz
4× at FS = 88.2 kHz, 96 kHz
2× at FS = 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 I2C interface.
1.10.2
De-Emphasis Filter
For audio sources that have been pre-emphasized, a precision 50 s/15 s de-emphasis filter is provided to
support the sampling rates of 32 kHz, 44.1 kHz, and 48 kHz. Figure 117 shows a graph of the de-emphasis
filtering characteristics. De-emphasis is set using two bits in the system control register.
Response
dB
10
0
Frequency kHz
3.18 (50 s)
10.6 (15 s)
Figure 117. 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.
相關(guān)PDF資料
PDF描述
TAS5028APAGRG4 SPECIALTY CONSUMER CIRCUIT, PQFP64
TAS5028APAGR SPECIALTY CONSUMER CIRCUIT, PQFP64
TAS5028APAG SPECIALTY CONSUMER CIRCUIT, PQFP64
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TAS5028PAGR SPECIALTY CONSUMER CIRCUIT, PQFP64
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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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
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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: 安裝風格: 封裝 / 箱體: 封裝:Tube
TAS5028PAGR 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: 安裝風格: 封裝 / 箱體: 封裝:Tube