- 您现在的位置：买卖IC网 > PDF目录98254 > TLV320AIC3111IRHBT (TEXAS INSTRUMENTS INC) AUDIO AMPLIFIER, PQCC32 PDF资料下载
参数资料
| 型号： | TLV320AIC3111IRHBT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | AUDIO AMPLIFIER, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 79/156页 |
| 文件大小： | 1701K |
| 代理商： | TLV320AIC3111IRHBT |
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页当前第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页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页
www.ti.com
SLAS644B – JULY 2009 – REVISED OCTOBER 2009
One example of AGC code follows, but actual use of code should be verified based on application usage.
Note that the AGC code should be set up before powering up the ADC.
####################### AGC ENABLE EXAMPLE CODE ##################### ## Switch to page 0 w 30
00 00 # Set AGC enable and Target Level = -10 dB # Target level can be set lower if clipping
occurs during speech # Target level is adjusted considering Max Gain also w 30 56 A0 # AGC
hysteresis=DISABLE, noise threshold = -90dB # Noise threshold should be set at higher level if
noisy background is present in application w 30 57 FE # AGC maximum gain= 40 dB # Higher Max
gain is a trade off between gaining up a low sensitivity MIC, and the background # acoustic
noise # Microphone bias voltage (MICBIAS) level can be used to change the Microphone
Sensitivity w 30 58 50 # Attack time=864/Fs w 30 59 68 # Decay time=22016/Fs w 30 5A A8 # Noise
debounce 0 ms # Noise debounce time can be increased if needed w 30 5B 00 # Signal debounce 0
ms # Signal debounce time can be increased if needed w 30 5C 00 ######################## END of
AGC SET UP #################################
5.5.3
Delta-Sigma ADC
The analog-to-digital converter has a delta-sigma modulator with an oversampling ratio (AOSR) up to 128.
The ADC can support a maximum output rate of 192 kHz.
ADC power up is controlled by writing to page 0 / register 81, bit D7. An ADC power-up condition can be
verified by reading page 0 / register 36, bit D6.
5.5.4
ADC Decimation Filtering and Signal Processing
The TLV320AIC3111 ADC channel includes built-in digital decimation filters to process the oversampled
data from the delta-sigma modulator to generate digital data at the Nyquist sampling rate with high
dynamic range. The decimation filter can be chosen from three different types, depending on the required
frequency response, group delay, and sampling rate.
5.5.4.1
ADC Processing Blocks
The TLV320AIC3111 offers a range of processing blocks which implement various signal processing
capabilities along with decimation filtering. These processing blocks give users the choice of how much
and what type of signal processing they may use and which decimation filter is applied.
The choices among these processing blocks allow the system designer to balance power conservation
and signal-processing flexibility. Less signal-processing capability reduces the power consumed by the
device. Table 5-16 gives an overview of the available processing blocks of the ADC channel and their
properties. The Resource Class (RC) column gives a relative indication of power consumption.
The signal processing blocks available are:
First-order IIR
Scalable number of biquad filters
Variable-tap FIR filter
AGC
The processing blocks are tuned for common cases and can achieve high anti-alias filtering or low group
delay in combination with various signal-processing effects such as audio effects and frequency shaping.
The available first-order IIR, biquad, and FIR filters have fully user-programmable coefficients.
Table 5-16. ADC Processing Blocks
Processing
Decimation
1st-Order
Number
Required
Resource
Channel
FIR
Blocks
Filter
IIR Available
Biquads
AOSR Value
Class
PRB_R4
Mono
A
Yes
0
No
128, 64
3
PRB_R5
Mono
A
Yes
5
No
128, 64
4
PRB_R6
Mono
A
Yes
0
25-tap
128, 64
4
PRB_R10
Mono
B
Yes
0
No
64
2
PRB_R11
Mono
B
Yes
3
No
64
2
PRB_R12
Mono
B
Yes
0
20-tap
64
2
Copyright 2009, Texas Instruments Incorporated
APPLICATION INFORMATION
29
Product Folder Link(s): TLV320AIC3111
相关PDF资料 |
PDF描述 |
|---|---|
| TLV320AIC3111IRHBR | AUDIO AMPLIFIER, PQCC32 |
| TLV320AIC3120IRHBR | AUDIO AMPLIFIER, PQCC32 |
| TLV320AIC3120IRHBT | AUDIO AMPLIFIER, PQCC32 |
| TLV320AIC31IRHBRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TLV320AIC31IRHBR | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV320AIC3120 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Low-Power Mono Audio Codec With Embedded miniDSP and Mono Class-D Speaker Amplifier |
| TLV320AIC3120EVM-U | 功能描述:音频 IC 开发工具 TLV320AIC3120EVM-U 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 |
| TLV320AIC3120IRHBR | 功能描述:接口—CODEC Low-Pwr Audio CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| TLV320AIC3120IRHBT | 功能描述:接口—CODEC Low-Pwr Audio CODEC RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| TLV320AIC31EVM | 功能描述:音频 IC 开发工具 TLV320AIC31 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 |
发布紧急采购，3分钟左右您将得到回复。