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参数资料
| 型号： | TAS5028PAGR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 24/86页 |
| 文件大小： | 1201K |
| 代理商： | TAS5028PAGR |
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Introduction
22
SLES112 — June 2004
TAS5028
The interpolator, noise shaper, and PWM sections provide a PWM output with the following features:
Up to 8x over sampling.
-
8x at FS = 32 kHz, 38 kHz, 44.1 kHz, 48 kHz
-
4x at FS = 88.2 kHz, 96 kHz
-
2x at FS = 176.4 kHz, 192 kHz
5th order noise shaping
100-dB dynamic range 0 – 20 kHz (TAS5028 + 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 1 - 17 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 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 TAS5028 adjusts the radiated emissions to provide an emission clear
zone for the tuned AM frequency. The inputs to the TAS5028 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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| TAS5028PAGG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5028PAGRG4 | 功能描述:音频 DSP 8 Ch Digital Audio PWM Processor RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TAS5036 | 制造商:TI 制造商全称:Texas Instruments 功能描述:SIX CHANNEL DIGITAL AUDIO PWM PROCESSOR |
| TAS5036A | 制造商:TI 制造商全称:Texas Instruments 功能描述:Six Channel Digital Audio PWM Processor |
| TAS5036A_06 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Six Channel Digital Audio PWM Processor |
| TAS5036AIPFC | 功能描述:音频放大器 Digital Audio PWM Processor RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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