- 您现在的位置：买卖IC网 > PDF目录98163 > TAS5508PAGR (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQFP64 PDF资料下载
参数资料
| 型号： | TAS5508PAGR |
| 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： | 33/105页 |
| 文件大小： | 1286K |
| 代理商： | TAS5508PAGR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页当前第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页
f Frequency Hz
Gain
dB
10
20k
100
1k
G001
20
0
10
20
40
10
30
10k
2.10 Dynamic Range Control (DRC)
TAS5508
8-Channel Digital Audio PWM Processor
www.ti.com
SLES091D – FEBRUARY 2004 – REVISED JULY 2009
Table 2-7. Loudness Function Parameters
LOUDNESS
DESCRIPTION
USAGE
DATA
I2C
DEFAULT
TERM
FORMAT
SUB-
HEX
FLOAT
ADDRESS
H(Z)
Loudness biquad
Controls shape of
5.23
0x95
b0 = 0000 8ACE
b0 = 0.004236
Loudness curves
b1 = 0000 0000
b1 = 0
b2 = FFFF 7532
b2 = –0.004236
a1 = FF01 1951
a1 = –1.991415
a2 = 007E E914
a2 = 0.991488
LG
Loudness gain
Loudness function
5.23
0x91
FFC0 0000
–0.5
LO
Loudness offset
Loudness function
25.23
0x92
0000 0000
0
G
Gain
Switch to enable
5.23
0x93
0080 0000
1
loudness (ON = 1, OFF = 0)
O
Offset
25.23
0x94
0000 0000
0
See Figure 2-15 for the resulting loudness function at different gains.
Figure 2-15. Loudness Example Plots
DRC provides both compression and expansion capabilities over three separate and definable regions of
audio signal levels. Programmable threshold levels set the boundaries of the three regions. Within each of
the three regions, a distinct compression or expansion transfer function can be established and the slope
of each transfer function is determined by programmable parameters. The offset (boost or cut) at the two
boundaries defining the three regions can also be set by programmable offset coefficients. The DRC
implements the composite transfer function by computing a 5.23-format gain coefficient from each sample
output from the rms estimator. This gain coefficient is then applied to a mixer element, whose other input
is the audio data stream. The mixer output is the DRC-adjusted audio data.
There are two distinct DRC blocks in the TAS5508. DRC1 services channels 1–7 in the 8-channel mode
and channels 1–4 and 7 in the 6-channel mode. This DRC computes rms estimates of the audio data
streams on all channels that it controls. The estimates are then compared on a sample-by-sample basis
and the larger of the estimates is used to compute the compression/expansion gain coefficient. The gain
coefficient is then applied to the appropriate channel audio streams. DRC2 services only channel 8. This
DRC also computes an rms estimate of the signal level on channel 8 and this estimate is used to compute
the compression/expansion gain coefficient applied to the channel-8 audio stream.
Description
33
相关PDF资料 |
PDF描述 |
|---|---|
| TAS5508PAGG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TAS5518CPAGR | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TAS5518CPAG | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TAS5518PAG | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| TAS5518PAGRG4 | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TAS5508PAGRG4 | 功能描述:音频 DSP 8Ch 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 |
| TAS5514BQ1DKDEVM | 功能描述:音频 IC 开发工具 TAS5514BQ1DKD 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 |
| TAS5514BTDKDRQ1 | 功能描述:音频放大器 4-CH Auto Digital Amps 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 |
| TAS5518 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TAS5518 8 Channel Digital Audio PWM Processor |
| TAS5518_06 | 制造商:TI 制造商全称:Texas Instruments 功能描述:8 Channel Digital Audio PWM Processor |
发布紧急采购，3分钟左右您将得到回复。