sx8723 Semtech Corporation, sx8723 Datasheet - Page 47

• Manufacturer Part Number: sx8723
• Description: Sx8723 Zoomingadc? For Pressure And Temperature Sensing
• Manufacturer: Semtech Corporation

SX8723
ZoomingADC™ for Pressure and Temperature Sensing
ADVANCED COMMUNICATIONS & SENSING
Power Consumption
Figure 28 plots the variation of quiescent current consumption with supply voltage V
, as well as the
DD
distribution between the 3 PGA stages and the ADC (see Table 34). As shown in Figure 29, 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 29, IB_AMP_PGA/ADC[1:0]
= '11', '10', '00' for f
= 500, 250, 62.5 kHz respectively.)
S
Quiescent current consumption vs. temperature is depicted in Figure 30, showing a relative increase of nearly
40% between -45 and +85°C.
Figure 28 - Quiescent Current Consumption vs. Supply Voltage
Figure 29 - Quiescent Current Consumption vs. Supply Voltage for Different Sampling Frequencies
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