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参数资料
| 型号： | TAS5036AIPFCG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封装： | GREEN, PLASTIC, TQFP-80 |
| 文件页数： | 19/64页 |
| 文件大小： | 950K |
| 代理商： | TAS5036AIPFCG4 |
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Architecture Overview
20
SLES061B—November 2002—Revised January 2004
TAS5036A
If an error recovery (described in the PWM section) occurs after a mute request has been received, the device
returns from error recovery with the channel volume set as specified by the mute command.
2.3.3 Auto Mute
Automute is an automatic sequence that can be enabled or disabled via the serial control interface. The default
for this control is enabled. When enabled, the PWM automutes an individual channel when a channel receives
from 5 ms to 50 ms of consecutive zeros. This time interval can be selectable using the automute delay
register. The default interval is 5 ms. This duration is independent of the sample rate. The automute state is
exited when two consecutive samples of nonzero data are received. The TAS5036A exit from automute is
performed quickly and preserves all music information.
This mode uses the valid low to provide a low-noise floor while maintaining a short start-up time. Noise free
entry and exit is achieved by using the PWM quiet start and stop sequences.
2.3.4 Individual Channel Mute
Individual channel mute is invoked through the serial interface. Individual channel mute permits each channel
of the TAS5036A to be individually muted and unmuted. The operation that is performed is identical to the mute
operation; however, it is performed on a per-channel basis. A TAS5036A channel is held in the mute state as
long as the serial interface mute setting for that channel is set.
2.3.5 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. See Figure 211 for a graph showing the
de-emphasis filtering characteristics. De-emphasis is set using two bits in the system control register.
Table 210. De-Emphasis Filter Characteristics
DEM_SEL2 (MSB)
DEM_SEL1
DESCRIPTION
0
De-emphasis disabled
0
1
De-emphasis enabled for Fs = 48 kHz
1
0
De-emphasis enabled for Fs = 44.1 kHz
1
De-emphasis enabled for Fs = 32 kHz
Following the change of state of the de-emphasis bits, the PWM outputs go into the soft mute state. After 128
LRCLK periods for initialization, the PWM outputs are driven to the normal (unmuted) mode.
0
10
Response
dB
3.18 (50
s)
10.6 (15
s)
f Frequency kHz
De-Emphasis
Figure 211. De-Emphasis Filter Characteristics
2.4
Pulse-Width Modulator (PWM)
The TAS5036A contains six channels of high performance digital Equibit PWM modulators that are designed
to drive switching output stages (back ends) in both single-ended (SE) and H-bridge (bridge tied load)
configuration. The TAS5036A device uses noise shaping and sophisticated error correction algorithms to
achieve high power efficiency and high-performance digital audio reproduction.
The PWM provides six pseudodifferential outputs to drive six monolithic power stages (such as TAS5110) or
six discrete differential power stages using gate drivers (such as the TAS5182) and MOSFETs in single-ended
or bridged configurations. The TAS5036A also provides a high-performance differential output that can be
used to drive an external analog headphone amplifier.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5036AIPFCR | 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 |
| TAS5036AIPFCRG4 | 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 |
| TAS5036APFC | 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 |
| TAS5036APFCG4 | 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 |
| TAS5036APFCR | 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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