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SX8725S Datasheet(PDF) 12 Page - Semtech Corporation |
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SX8725S Datasheet(HTML) 12 Page - Semtech Corporation |
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12 / 69 page  www.semtech.com Page 12 ADVANCED COMMUNICATIONS & SENSING DATASHEET SX8725S ZoomingADC for sensing data acquisition Revision 1.0 February 2011 © Semtech 5 Pin Description Note The bottom pad is internally connected to VSS. It should also be connected to VSS on PCB to reduce noise and improve thermal behavior. Pin Name Type Function 1 AC3 Analog Input Differential sensor input in conjunction with AC2 2N.C. - Not used 3N.C. - Not used 4N.C. - Not used 5N.C. - Not used 6 VBATT Power Input 2.4V to 5.5V power supply 7 VSS Power Input Chip Ground 8 READY Digital Output Data Ready (active high). Conversion complete flag. 9D1 Digital IO Digital output sensor drive (VBATT or VSS) Analog VREF Input in optional operating mode 10 SS Digital Input Slave select (active low). 11 MISO/READY Digital Output Serial data output: Master Input, Slave Output. Can be combined with Data Ready (active low when Data Ready function enabled). 12 D0 Digital IO Digital output sensor drive (VBATT or VSS) Analog VREF Output in optional operating mode 13 MOSI Digital Input Serial data input: Master Output, Slave Input . 14 SCLK Digital Input Serial clock input. 15 VPUMP Power IO Charge pump output. Raises ADC supply above VBATT if VBATT supply is too low. Recommended range for capacitor is 1nF to 10 nF. Connect the capacitor to ground. 16 AC2 Analog Input Differential sensor input in conjunction with AC3 |
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