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| 型號： | TLV320AIC3253IRGER |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC24 |
| 封裝： | 4 X 4 MM, PLASTIC, QFN-24 |
| 文件頁數(shù)： | 15/35頁 |
| 文件大?。?/td> | 738K |
| 代理商： | TLV320AIC3253IRGER |
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SLOS631 – MARCH 2010
www.ti.com
DAC
The TLV320AIC3253 includes a stereo audio DAC supporting data rates from 8kHz to 192kHz. Each channel of
the stereo audio DAC consists of a signal-processing engine with fixed processing blocks, a digital interpolation
filter, multi-bit digital delta-sigma modulator, and an analog reconstruction filter. The DAC is designed to provide
enhanced performance at low sampling rates through increased oversampling and image filtering, thereby
keeping quantization noise generated within the delta-sigma modulator and signal images strongly suppressed
within the audio band to beyond 20kHz. To handle multiple input rates and optimize power dissipation and
performance, the TLV320AIC3253 allows the system designer to program the oversampling rates over a wide
range from 1 to 1024 by configuring the Page 0 / Register 13, and Register 14. The system designer can choose
higher oversampling ratios for lower input data rates and lower oversampling ratios for higher input data rates.
The TLV320AIC3253 DAC channel includes a built-in digital interpolation filter to generate oversampled data for
the sigma-delta modulator. The interpolation filter can be chosen from three different types depending on
required frequency response, group delay and sampling rate.
The DAC path of the TLV320AIC3253 features many options for signal conditioning and signal routing:
2 headphone amplifiers
–
Usable in single-ended or differential mode
–
Analog volume setting with a range of -6 to +29 dB
–
Class-D mode
Digital volume control with a range of -63.5 to +24dB
Mute function
Dynamic range compression (DRC)
In addition to the standard set of DAC features the TLV320AIC3253 also offers the following special features:
Built in sine wave generation (beep generator)
Digital auto mute
Adaptive filter mode
DAC Processing Blocks — Overview
The TLV320AIC3253 implements signal processing capabilities and interpolation filtering via processing blocks.
These fixed processing blocks give users the choice of how much and what type of signal processing they may
use and which interpolation filter is applied.
The choice between these processing blocks is part of the PowerTune strategy balancing power conservation
and signal processing flexibility. Less signal processing capability will result in less power consumed by the
device. The Table 9 gives an overview over all available processing blocks of the DAC channel and their
properties. The Resource Class Column (RC) gives an approximate indication of power consumption.
The signal processing blocks available are:
First-order IIR
Scalable number of biquad filters
3D – Effect
Beep Generator
The processing blocks are tuned for common cases and can achieve high image rejection or low group delay in
combination with various signal processing effects such as audio effects and frequency shaping. The available
first-order IIR and biquad filters have fully user-programmable coefficients.
Table 9. Overview – DAC Predefined Processing Blocks
Processing
Interpolation
Channel
1st Order
Num. of
DRC
3D
Beep
RC Class
Block No.
Filter
IIR Available
Biquads
Generator
PRB_P1(1)
A
Stereo
No
3
No
8
PRB_P2
A
Stereo
Yes
6
Yes
No
12
(1)
Default
22
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC3253
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| TLV320AIC3253IRGET | 功能描述:接口—CODEC Ultra Low Pwr Stereo Audio Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLV320AIC3253IYZKR | 功能描述:接口—CODEC Ultra Low Pwr Stereo Audio Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLV320AIC3253IYZKT | 功能描述:接口—CODEC Ultra Low Pwr Stereo Audio Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLV320AIC3254 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultra Low Power Stereo Audio Codec With Embedded miniDSP |
| TLV320AIC3254_09 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultra Low Power Stereo Audio Codec With Embedded miniDSP |
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