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参数资料
| 型号： | TAS5001PFBG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封装： | GREEN, PLASTIC, TQFP-48 |
| 文件页数： | 18/21页 |
| 文件大小： | 423K |
| 代理商： | TAS5001PFBG4 |
TAS5001
SLES009A SEPTEMBER 2001 REVISED DECEMBER 2001
6
www.ti.com
functional description (continued)
digital interpolation filter
The 24-bit high-performance linear phase FIR interpolation filter up-samples the input digital data at a rate of
four times (double speed mode = 88.2 kHz or 96 kHz), or eight times (normal mode = 32 kHz, 44.1 kHz, or 48
kHz) the incoming sample rate. This filter provides very low pass-band ripple and optimized time domain
transient response for accurate music reproduction.
digital PWM modulator
The interpolation filter output is sent to the modulator. This modulator consists of a high performance fourth order
digital noise shaper and a PCM-to-PWM converter. Following the noise shaper, the PCM signal is fed into a very
low distortion PCM-to-PWM conversion block, buffered, and output from the chip. The modulation scheme is
based on a 2-state control of the H-bridge output.
control, status, and operational modes
The TAS5001 control section consists of several control-input pins. Three serial mode pins (MOD0, MOD1, and
MOD2) are provided to select various serial data formats. During normal operating conditions if any of the
MOD0, MOD1, or MOD2 pins changes state, a reset sequence is initiated. Also provided are separate
power-down (PDN), reset (RESET), and mute (MUTE) pins.
power up
At power up the VALID_L and VALID_R pins are asserted low and the PWM outputs go to the hard mute state
in which the P outputs are held low and the M outputs are held high. Following initialization, the TAS5001 comes
up in the operational state (differential PWM audio). There are two cases of power-up timing. The first case is
shown in Figure 1 with RESET preceding PDN. The second case is shown in Figure 2 with PDN preceding
RESET.
Initialization Time = 100 ms max
RESET
PDN
VALID_L
VALID_R
Figure 1. Power-Up Timing (RESET Preceding PDN)
Initialization Time = 5 ms max
RESET
PDN
Greater Than 16 MCLK Periods
VALID_L
VALID_R
Figure 2. Power-Up Timing (PDN Preceding RESET)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5001PFBR | 功能描述:音频 DSP 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 |
| TAS5001PFBRG4 | 功能描述:音频 DSP Dig Aud PWM Proc 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 |
| TAS5010 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TRUE DIGITAL AUDIO AMPLIFIER TAS5010 DIGITAL AUDIO PWM PROCESSOR |
| TAS5010_06 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TRUE DIGITAL AUDIO AMPLIFIER DIGITAL AUDIO PWM PROCESSOR |
| TAS5010-5112F2EVM | 功能描述:音频 IC 开发工具 TAS5010-5112F2 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
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