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參數(shù)資料
| 型號： | SX8725E083TRT |
| 元件分類： | ADC |
| 英文描述： | 3-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO12 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, MLPD-12 |
| 文件頁數(shù)： | 42/53頁 |
| 文件大小： | 3966K |
| 代理商： | SX8725E083TRT |
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ADVANCED COMMUNICATIONS & SENSING
V1.8 2009 Semtech Corp.
www.semtech.com
47
SX8725
ZoomingADC for Pressure and Temperature Sensing
Power Consumption
Figure 29 plots the variation of quiescent current consumption with supply voltage VDD, as well as the
distribution between the 3 PGA stages and the ADC (see Table 34). As shown in Figure 30, if lower sampling
frequency is used, the quiescent current consumption can be lowered by reducing the bias currents of the PGAs
and the ADC with registers IB_AMP_PGA [1:0] and IB_AMP_ADC [1:0]. (In Figure 30, IB_AMP_PGA/ADC[1:0]
= '11', '10', '00' for fS = 500, 250, 62.5 kHz respectively.)
Quiescent current consumption vs. temperature is depicted in Figure 31, showing a relative increase of nearly
40% between -45 and +85°C.
Figure 29 - Quiescent Current Consumption vs. Supply Voltage
Figure 30 - Quiescent Current Consumption vs. Supply Voltage for Different Sampling Frequencies
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