ICM7216A, ICM7216B, ICM7216DTiming Diagram40msINTERNALSTORE30ms TO 40ms60msFUNCTION:INTERNALTIME INTERVALRESET40msUPDATEUPDATEPRIMINGMEASUREMENT INTERVAL190ms TO 200msMEASUREMENTIN PROGRESS(INTERNAL ON7216A/B)INPUT APRIMING EDGESINPUT B250ns MINMEASUREDINTERVAL(FIRST)MEASUREDINTERVAL(LAST) NOTE: 1. If range is set to 1 event, first and last measured interval will coincide. FIGURE 1. WAVEFORMS FOR TIME INTERVAL MEASUREMENT (OTHERS ARE SIMILAR, BUT WITHOUT PRIMING PHASE)Typical Performance Curves20300fA (MAX) FREQUENCY UNIT COUNTER,4.5 ≤ VDD ≤ 6.0VFREQUENCY RATIO MODES1520010(mA)I DIGfA (MAX) fB (MAX) PERIOD,TIME INTERVAL MODES100FREQUENCY (MHz)5+25oC+85oC-20oCTA = +25oC0034560123VDD-VSS (V)VDD-VOUT (V)FIGURE 2. fA(MAX), fB(MAX) AS A FUNCTION OF SUPPLYFIGURE 3. ICM7216A TYPICAL IDIG vs VDD-VOUT 13-27
