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參數(shù)資料
| 型號： | TLC320AD75C |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 20-Bit Sigma-Delta Stereo ADA Circuit |
| 中文描述： | 20位Σ-Δ立體聲電路反傾銷協(xié)定 |
| 文件頁數(shù)： | 21/43頁 |
| 文件大?。?/td> | 211K |
| 代理商： | TLC320AD75C |
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2–9
2.15 Sigma-Delta DAC Modulator
The DAC uses a third-order modulator with 32 times oversampling. The DAC provides high-resolution,
low-noise performance using a 15-value PWM output as shown in Figure 2–11.
fB
0
0.1
0.2
0.3
0.4
0.5
0
N
Audio
Signal
Noise Excluded by
Low-Pass Filter
Quantization Noise Power With Noise Shaping
Quantization Noise Power Without Noise Shaping
Normalized Analog-Output Frequency (fO/fs
§
)
§fO is the output frequency at the external low-pass filter output.
APB(max)
fB is the highest frequency of interest within the baseband.
Figure 2–11. Oversampling Noise Power With and Without Noise Shaping
2.16 DAC Interpolation Filter
The interpolation filter used prior to the DAC increases the digital-data rate from the LRCKD speed to the
oversampled rate by interpolating with a ratio of 1:32. The oversampling modulator receives the output of
this filter with de-emphasis as an option.
2.17 DAC PWM Output (L2–L1 and R2–R1)
The L2–L1 and the R2–R1 output pairs are PWM signals with the L2–L1 differential pulse duration
determining the left-channel analog voltage and the R2–R1 differential pulse duration determining the
right-channel analog voltage.
Each DAC left and right output consists of 15 levels of PWM and provides a differential signal as the input
to two external differential amplifiers configured as a low-pass filter to produce the left and right audio
outputs.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLC320AD77C | 24-BIT 96 kHz STEREO AUDIO CODEC |
| TLC320AD80C | Audio Processor Subsystem |
| TLC320AD81CDBT | Stereo Audio Digital Equalizer DC |
| TLC320AD81C | Stereo Audio Digital Equalizer DC |
| TLC339CDB | LinCMOSE MICROPOWER QUAD COMPARATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLC320AD75CDL | 制造商:Texas Instruments 功能描述: |
| TLC320AD77 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:24-Bit 96 kHz Stereo Audio Codec |
| TLC320AD77C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:24-BIT 96 kHz STEREO AUDIO CODEC |
| TLC320AD77CDB | 功能描述:接口—CODEC STEREO AUDIO ADA 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 |
| TLC320AD77CDBG4 | 功能描述:接口—CODEC STEREO AUDIO ADA 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 |
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