sx8725 Semtech Corporation, sx8725 Datasheet - Page 39

• Manufacturer Part Number: sx8725
• Description: Sx8725 Zoomingadc? For Pressure And Temperature Sensing
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
Power Reduction
The ZoomingADC™ is particularly well suited for low-power applications. When very low power consumption is
of primary concern, such as in battery operated systems, several parameters can be used to reduce power
consumption as follows:
Finally, remember that power reduction is typically traded off with reduced linearity, larger noise and slower
maximum sampling speed.
V1.5 © 2007 Semtech Corp.
1. Operate the acquisition chain with a reduced supply voltage VDD.
2. Disable the PGAs which are not used during analog-to-digital conversion with ENABLE[3:0].
3. Disable all PGAs and the ADC when the system is idle and no conversion is performed.
4. Use lower bias currents in the PGAs and the ADC using the control words IB_AMP_PGA[1:0] and
5. Reduce sampling frequency.
IB_AMP_ADC[1:0].
ZoomingADC™ for Pressure and Temperature Sensing
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SX8725