參數(shù)資料
型號(hào): TLV320AIC10C
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: PLASTIC, TQFP-48
文件頁數(shù): 10/57頁
文件大?。?/td> 454K
代理商: TLV320AIC10C
2–4
2.1.4
MIC Input
The auxiliary inputs (AURXFP, AURXCP, and AURXM) can be programmed to interface with a microphone such as
an electret microphone, as illustrated in Figure 2.5, by writing a 1 to bit D6 and D4 of control register 1. Enabling MIC
input with DG automatically selects AURx channel for ADC input.
Sigma-
Delta
ADC
PGA
TLV320AIC10
Anti-
Aliasing
Filter
AURXFP
Electret
Microphone
MIC_BIAS
VMID
10 k
AURXM
AURXCP
S2D
+
1 k
10 k
0.1
F
Vref
Figure 2–5. Typical Microphone Interface
2.1.5
Antialiasing Filter
The built-in antialiasing filter has a 3-dB cutoff frequency of 70 kHz.
2.1.6
Sigma-Delta ADC
The sigma-delta analog-to-digital converter is a sigma-delta modulator with 128
× oversampling. The ADC provides
high-resolution, low-noise performance using oversampling techniques. Due to the oversampling employed, only
single-pole RC filters are required on the analog inputs.
2.1.7
Decimation Filter
The decimation filters reduce the digital data rate to the sampling rate. This is accomplished by decimating with a ratio
of 1:64. The output of the decimation filter is a 16-bit 2s-complement data word clocking at the sample rate selected
for that particular data channel. The BW of the filter is 0.45
× FS and scales linearly with the sample rate.
2.1.8
Sigma-Delta DAC
The sigma-delta digital-to-analog converter is a sigma-delta modulator with 128
× oversampling. The DAC provides
high-resolution, low-noise performance using oversampling techniques.
2.1.9
Interpolation Filter
The interpolation filter resamples the digital data at a rate of 64 times the incoming sample rate. The high-speed data
output from the interpolation filter is then used in the sigma-delta DAC. The BW of the filter is 0.45 x FS and scales
linearly with the sample rate.
相關(guān)PDF資料
PDF描述
TLV320AIC10I SPECIALTY CONSUMER CIRCUIT, PQFP48
TLV320AIC10CPFB SPECIALTY CONSUMER CIRCUIT, PQFP48
TLV320AIC10IPFB SPECIALTY CONSUMER CIRCUIT, PQFP48
TLV320AIC10CGQE SPECIALTY CONSUMER CIRCUIT, PBGA80
TLV320AIC10IGQE SPECIALTY CONSUMER CIRCUIT, PBGA80
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