- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98254 > TLV320AIC32IRHBG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC32 PDF資料下載
參數(shù)資料
| 型號： | TLV320AIC32IRHBG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數(shù)： | 22/72頁 |
| 文件大小： | 4594K |
| 代理商： | TLV320AIC32IRHBG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁
www.ti.com
LB1
RB2
Atten
LB2
L
R
TOLEFTCHANNEL
TO RIGHT CHANNEL
DIGITAL INTERPOLATION FILTER
DELTA-SIGMA AUDIO DAC
TLV320AIC32
SLAS479A – AUGUST 2005 – REVISED SEPTEMBER 2005
Figure 27. Architecture of the Digital Audio Processing When 3-D Effects are Enabled
It is recommended that the digital effects filters should be disabled while the filter coefficients are being modified.
While new coefficients are being written to the device over the control port, it is possible that a filter using
partially updated coefficients may actually implement an unstable system and lead to oscillation or objectionable
audio output. By disabling the filters, changing the coefficients, and then re-enabling the filters, these types of
effects can be entirely avoided.
The digital interpolation filter upsamples the output of the digital audio processing block by the required
oversampling ratio before data is provided to the digital delta-sigma modulator and analog reconstruction filter
stages. The filter provides a linear phase output with a group delay of 21/Fs. In addition, programmable digital
interpolation filtering is included to provide enhanced image filtering and reduce signal images caused by the
upsampling process that are below 20 kHz. For example, upsampling an 8-kHz signal produces signal images at
multiples of 8-kHz (i.e., 8 kHz, 16 kHz, 24 kHz, etc.). The images at 8 kHz and 16 kHz are below 20 kHz and still
audible to the listener; therefore, they must be filtered heavily to maintain a good quality output. The interpolation
filter is designed to maintain at least 65-dB rejection of images that land below 7.455 Fs. In order to utilize the
programmable interpolation capability, the Fsref should be programmed to a higher rate (restricted to be in the
range of 39 kHz to 53 kHz when the PLL is in use), and the actual Fs is set using the NDAC divider. For
example, if Fs = 8 kHz is required, then Fsref can be set to 48 kHz, and the DAC Fs set to Fsref/6. This ensures
that all images of the 8-kHz data are sufficiently attenuated well beyond a 20-kHz audible frequency range.
The stereo audio DAC incorporates a third order multi-bit delta-sigma modulator followed by an analog
reconstruction filter. The DAC provides high-resolution, low-noise performance, using oversampling and noise
shaping techniques. The analog reconstruction filter design consists of a 6-tap analog FIR filter followed by a
continuous time RC filter. The analog FIR operates at a rate of 128
× Fsref (6.144 MHz when Fsref = 48 kHz,
5.6448 MHz when Fsref = 44.1 kHz). Note that the DAC analog performance may be degraded by excessive
clock jitter on the MCLK input. Therefore, care must be taken to keep jitter on this clock to a minimum.
29
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLV320AIC32IRHBR | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TLV320AIC32IRHBRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TLV320AIC32IRHBT | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TLV320AIC32IRHBTG4 | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TLV320AIC32IRHB | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLV320AIC32IRHBR | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp 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 |
| TLV320AIC32IRHBRG4 | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp 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 |
| TLV320AIC32IRHBT | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp 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 |
| TLV320AIC32IRHBTG4 | 功能描述:接口—CODEC Lo-Pwr Stereo Codec w/6 Inp 6 Otp 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 |
| TLV320AIC33 | 制造商:BB 制造商全稱:BB 功能描述:LOW POWER STEREO AUDIO CODEC FOR PORTABLE AUDIO/TELEPHONY |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。