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參數(shù)資料
| 型號： | TLC320AD52C |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Sigma-Delta Analog Interface Circuits With Master-Slave Function(帶主從功能的∑△模擬接口電路,高分辨率信號轉(zhuǎn)換) |
| 中文描述： | sigma - delta模擬接口電路的主從功能（帶主從功能的Σ△模擬接口電路，高分辨率信號轉(zhuǎn)換） |
| 文件頁數(shù)： | 28/59頁 |
| 文件大小： | 306K |
| 代理商： | TLC320AD52C |
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2–14
2.9
The two differential analog inputs (INP and INM or AUXP and AUXM) are multiplexed into the sigma–delta
modulator. The performance of the AUX channel is similar to the normal input channel. A single-pole
antialias filter must be connected to INP and INM (also AUXP and AUXM, if used). If an RC is used for the
single-pole filter (Figure 2–15) the value of R should not be grater that 1 k
. The gain of the input amplifiers
is set through the control 4 register.
Multiplexed Analog Input and Output
C
IN +
R
INP
C
IN –
R
INM
NOTES: A. The bandwidth of this RC antialias is determined by:
(f0 = 1/(2
π
RC))
B. AUXP and AUXM need to connect to AVSS if not used.
C. Bandwidth of the anti-alias filter can be 4
×
fs.
Figure 2–15. RC Antialias Filter
2.9.1
To produce the best possible common-mode rejection of unwanted signal performance, the analog signal
is processed differentially until it is converted to digital data. The signal applied to the terminals INM and INP
should be differential to preserve the device specifications. As much as 6 dB of signal level will be lost if the
single-ended input is used directly. The signal source driving the analog inputs (INP and INM or AUXP and
AUXM) should have a low source impedance for best low-noise performance and accuracy.
Multiplexed Analog Input
To obtain maximum dynamic range, the signal should be AC coupled to the input terminal. The analog input
signal is self-biased to the midsupply voltage if the monitor-amplifier input source is selected as the same
source for the ADC input. These input sources are selected by bits D4 and D5 of control 1 register. The
default condition self biases the input since the register default value selects INP and INM as the source
for both the ADC and monitor amplifier input (see figure 2–16). A simple single-pole antialias filter with low
output impedance must be connected to INP and INM (also AUXP and AUXM, if used).
V
INP
INP
V
INM
INM
2.5 V
Figure 2–16. INP and INM Internal Self-Biased (2.5 V) Circuit
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TLC320AD52CDW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SIGMA-DELTA ANALOG INTERFACE CIRCUITS WITH MASTER-SLAVE FUNCTION |
| TLC320AD52CPT | 功能描述:IC ANALOG INTERFACE W/MS 48-LQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:PCM 數(shù)據(jù)接口:PCM 音頻接口 分辨率（位）:15 b ADC / DAC 數(shù)量:1 / 1 三角積分調(diào)變:是 S/N 比，標準 ADC / DAC (db):- 動態(tài)范圍，標準 ADC / DAC (db):- 電壓 - 電源，模擬:2.7 V ~ 3.3 V 電壓 - 電源，數(shù)字:2.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-VFBGA 供應商設備封裝:80-BGA MICROSTAR JUNIOR（5x5） 包裝:帶卷 (TR) 其它名稱:296-21257-2 |
| TLC320AD535 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL CHANNEL VOICE/DATA CODEC |
| TLC320AD535C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL CHANNEL VOICE/DATA CODEC |
| TLC320AD535C-I | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL CHANNEL VOICE/DATA CODEC |
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