- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98253 > TLV320AIC26IRHBRG4 (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC32 PDF資料下載
參數(shù)資料
| 型號： | TLV320AIC26IRHBRG4 |
| 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)： | 15/67頁 |
| 文件大?。?/td> | 883K |
| 代理商： | TLV320AIC26IRHBRG4 |
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頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第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
TLV320AIC26
SLAS412 DECEMBER 2003
www.ti.com
22
See Table 2 for various AGC programming options.
Input
Signal
Output
Signal
AGC
Gain
Decay Time
Attack Time
Target Gain
Figure 18. AGC Characteristics
Table 2. AGC Settings
MIC INPUT
BIT
CONTROL REGISTER
AGC enable
D0
01H
Target gain
D7D5
01H
Time constants (attack and decay time)
D4D1
01H
Noise threshold
D5D4
06H
Noise threshold flag
D11
04H
Hysteresis
D10D9
1DH
Debounce time (normal to silence mode)
D8D6
1EH
Debounce time (silence to normal mode)
D5D3
1EH
Max input gain applicable
D15D9
1EH
Gain applied by AGC
D15D8
01H
Saturation flag
D0
04H
Clip stepping enable
D3
06H
NOTE: All settings shown in Table 2 are located in Page2 of the control registers.
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
s and a zero with time constant of 15 s. Frequency response plots
are given in the Audio Codec 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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLV320AIC27CPFB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| TLV320AIC27IPFB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| TLV320AIC27TPFB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| TLV320AIC28IRGZR | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TLV320AIC28IRGZ | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLV320AIC27 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO AUDIO CODEC |
| TLV320AIC27CPFB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TLV320AIC27IPFB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO AUDIO CODEC |
| TLV320AIC27PFB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO AUDIO CODEC |
| TLV320AIC27TPFB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。