參數(shù)資料
型號(hào)： TLV320DAC23IGQER
廠商： Texas Instruments, Inc.
英文描述： STEREO AUDIO D/A CONVERTER, 8-TO 96KHZ WITH INTERGRATED HEADPHONE AMPLIFIER
中文描述： 立體聲音頻D / A轉(zhuǎn)換，8到與96kHz的集成耳機(jī)放大器
文件頁數(shù)： 17/46頁
文件大?。?/td> 452K
代理商： TLV320DAC23IGQER
SLAS428 AUGUST 2004
www.ti.com
17
When PLL is enabled and D = 0, the following condition must be satisfied
80 MHz
MCLK
K
P
110 MHz
2 MHz
MCLK
P
20 MHz
4
J
55
When PLL is enabled and D
≠
0, the following condition must be satisfied
80 MHz
MCLK
K
P
110 MHz
10 MHz
MCLK
P
20 MHz
4
J
11
Example 1:
For MCLK = 12 MHz and Fsref = 44.1 kHz
P = 1, K = 7.5264
J = 7, D = 5264
Example 2:
For MCLK = 12 MHz and Fsref = 48.0 kHz
P = 1, K = 8.192
J = 8, D = 1920
STEREO AUDIO DAC
Each channel of the stereo audio DAC consists of a digital audio processing block, a digital interpolation filter, digital
delta-sigma modulator, and an analog reconstruction filter. The DAC is designed to provide enhanced performance at low
sample 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 20 kHz. This is realized
by keeping the upsampled rate constant at 128 x Fsref and changing the oversampling ratio as the input sample rate is
changed. For Fsref of 48 kHz, the digital delta-sigma modulator always operates at a rate of 6.144 MHz. This ensures that
quantization noise generated within the delta-sigma modulator stays low within the frequency band below 20 kHz at all
sample rates. Similarly, for Fsref rate of 44.1 kHz, the digital delta-sigma modulator always operates at a rate of 5.6448
MHz.
Digital Audio Processing
The DAC channel consists of optional filters for de-emphasis and bass, treble, midrange level adjustment, or speaker
equalization. The de-emphasis function is only available for sample rates of 32 kHz, 44.1 kHz, and 48 kHz. The transfer
function consists of a pole with time constant of 50
μ
s and a zero with time constant of 15
μ
s. Frequency response plots
are given in the
Audio DAC Filter Frequency Responses
section of this data sheet. The de-emphasis filter can be enabled
or bypassed depending on bit D0 of register 05H/Page2.
The DAC digital effects processing block also includes a fourth order digital IIR filter with programmable coefficients (one
set per channel). The filter is implemented as cascade of two biquad sections with frequency response given by:
N0
2
N1
z
1
N2
z
2
32768
2
D1
z
1
D2
z
2
N3
2
N4
z
1
N5
z
2
32768
2
D4
z
1
D5
z
2
The N and D coefficients are fully programmable, and the entire filter can be enabled or bypassed depending on bit D1 of
register 05H/Page2. The coefficients for this filter implement a variety of sound effects, with bass-boost or treble boost being
the most commonly used in portable audio applications. The default N and D coefficients in the part are given by:
N0 = N3 = 27619
N1 = N4 = 27034
N2 = N5 = 26461
D1 = D4 = 32131
D2 = D5 = 31506
相關(guān)PDF資料
PDF描述
TLV320ALC23 Evaluation Platform for the TLV320ALC23 Stereo Audio CODEC and TLV230DAC23 Stereo DAC
TLV320AIC14C PRODUCT NOTIFICATION
TLV320AIC14I PRODUCT NOTIFICATION
TLV320DAC23IGQE STEREO AUDIO D/A CONVERTER, 8-TO 96KHZ WITH INTERGRATED HEADPHONE AMPLIFIER
TLV320AIC25IPFBR Layout and Grounding Guidelines for TLV320AIC2x
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV320DAC23IPW 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC23IPWG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC23IPWR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC23IPWRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Octal Bus Trnscvr With 3-State Outputs RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC23IRHD 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Power Portable Aud Converter RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*