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MAX9924UAUB Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX9924UAUB Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 23 page Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold _______________________________________________________________________________________ 3 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT DIFFERENTIAL AMPLIFIER (MAX9924/MAX9926) Input Voltage Range IN+, IN- Guaranteed by CMRR -0.3 VCC + 0.3 V MAX9924 (Note 5) 60 87 Differential Amplifier Common-Mode Rejection Ratio CMRR MAX9926 (Note 5) 55 78 dB Input Resistance RIN (Note 5) 65 100 135 k Ω ADAPTIVE PEAK DETECTION MAX9924/MAX9925 -6.5 0 +6.5 Zero-Crossing Threshold VZERO_THRESH Mode B operation (Notes 5, 6) MAX9926/MAX9927 -6.5 0 +10 mV VADAPTIVE Adaptive peak threshold 33 %PK Minimum threshold of hysteresis comparator MAX9924/MAX9926 (Notes 5, 6) 415 30 Minimum threshold of hysteresis comparator MAX9925/MAX9927 (Notes 5, 6) 20 30 50 VMIN-THRESH - VZERO-THRESH for MAX9924 (Notes 5, 6) 715 26 VMIN-THRESH - VZERO-THRESH for MAX9926 (Notes 5, 6) 215 30 Fixed and Adaptive Peak Threshold VMIN-THRESH VMIN-THRESH - VZERO-THRESH for MAX9925/MAX9927 (Notes 5, 6) 19 30 50 mV Watchdog Timeout for Adaptive Peak Threshold tWD Timing window to reset the adaptive peak threshold if not triggered (input level below threshold) 45 85 140 ms ENTIRE SYSTEM Comparator Output Low Voltage VCOUT_OL 0.2 V tPDZ Overdrive = 2V to 3V, zero-crossing 50 Propagation Delay tPDA Overdrive = 2V to 3V, adaptive peak 150 ns COUT Transition Time tHL-LH 2ns Propagation Delay Jitter tPD-JITTER Includes noise of differential amplifier and comparator, f = 10kHz, VIN = 1VP-P sine wave 20 ns ELECTRICAL CHARACTERISTICS (continued) (VCC = 5V, VGND = 0V, MAX9925/MAX9927 gain setting = 1V/V, Mode A1, VBIAS = 2.5V, VPULLUP = 5V, RPULLUP = 1kΩ, CCOUT = 50pF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) |
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