MAX9926 MAXIM [Maxim Integrated Products], MAX9926 Datasheet
MAX9926
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MAX9926 Summary of contents
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... VR signals. The MAX9926/MAX9927 are dual versions of the MAX9924/MAX9925, respectively. The MAX9924/ MAX9926 combine matched resistors with a CMOS input precision operational amplifier to give high CMRR over a wide range of input frequencies and temperatures. The MAX9924/MAX9926 differential amplifiers provide a fixed gain of 1V/V ...
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... Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C ) (Note 1) JC BIAS = +25°C.) (Note 2) A SYMBOL CONDITIONS V (Note 3) CC MAX9924/MAX9925 I CC MAX9926/MAX9927 V > 4.1V, step time for V CC UVLO 1µs IN+, IN- Guaranteed by CMRR Temperature drift V OS-OA I (Note 4) ...
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... Minimum threshold of hysteresis comparator MAX9925/MAX9927 (Notes 5, 6) MIN-THRESH MIN-THRESH ZERO-THRESH MAX9924 (Notes MIN-THRESH ZERO-THRESH MAX9926 (Notes MIN-THRESH ZERO-THRESH MAX9925/MAX9927 (Notes 5, 6) Timing window to reset the adaptive t peak threshold if not triggered (input WD level below threshold) V COUT_OL Overdrive = 2V to 3V, zero-crossing ...
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... EXT_THRS is SW active I Modes A1, A2 BIAS Modes A1 +125° BIAS Mode +125° Mode A2 (MAX9924/MAX9926) INT_BIAS = +125°C, unless otherwise noted. All temperature limits are guaranteed by design 2.5V 5V 1kΩ, C PULLUP PULLUP MIN TYP MAX ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold ( MAX9925/MAX9927 gain setting = 1V/V. All values are GND INPUT OFFSET VOLTAGE DISTRIBUTION BIN SIZE ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold ( MAX9925/MAX9927 gain setting = 1V/V. All values are GND MINIMUM AND ZERO-CROSSING THRESHOLD vs. TEMPERATURE 2.5V CM ...
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... Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold PIN MAX9924 MAX9925 MAX9926 MAX9927 1 1 — — — 3 — 3 — — — — — — — — 1 — — 2 — ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold V CC 100kΩ IN 100kΩ IN+ INTERNAL REFERENCE 2.5V BIAS 8 _______________________________________________________________________________________ 100kΩ OP AMP 100kΩ COMPARATOR BUFFER 30% PEAK DETECTOR V MIN THRESHOLD MODE LOGIC INT_THRS ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold IN+ BIAS BUFFER _______________________________________________________________________________________ Functional Diagrams (continued) OUT MAX9925 OP AMP COMPARATOR 30% PEAK DETECTOR V MIN THRESHOLD EXT V CC GND 85ms COUT ...
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... IN1+ INTERNAL REFERENCE 2.5V BIAS1 EXT1 V CC 100kΩ IN2 100kΩ IN2+ BIAS2 EXT2 10 ______________________________________________________________________________________ Functional Diagrams (continued) 100kΩ MAX9926 OP AMP 100kΩ COMPARATOR BUFFER 30% PEAK DETECTOR V MIN THRESHOLD 100kΩ OP AMP 100kΩ COMPARATOR BUFFER 30% PEAK DETECTOR V MIN ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold V CC IN1 IN1+ BIAS1 BUFFER V CC IN2 IN2+ BIAS2 BUFFER ______________________________________________________________________________________ Functional Diagrams (continued) OUT1 MAX9927 OP AMP COMPARATOR 30% PEAK DETECTOR V ...
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... Mode Selection section). The MAX9924/MAX9926 provide four modes of opera- tion: Mode A1, Mode A2, Mode B, and Mode C as deter- mined by voltages applied to inputs ZERO_EN and INT_THRS (see Tables 1, 2, and 3) ...
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... These features enable reliable small-signal detection for VR sensors. The MAX9924/MAX9926 include on-chip precision- matched low-ppm resistors configured as a differential amplifier. High-quality matching and layout of these resistors produce extremely high DC and AC CMRR that is important to maintain noise immunity ...
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... VR sensor signals. An open-drain output allows the comparator to easily interface to a variety of µC I/O voltages. When operating the MAX9924/MAX9925/MAX9926 in Mode C, external hysteresis can be provided by adding external resistors (see Figures 5 and 8). The high and low hysteresis thresholds in Mode C can be calculated using the following equations, ⎛ ...
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... Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold 10kΩ VR SENSOR 10kΩ 1kΩ 10μF || 0.1μF Figure 2. MAX9924/MAX9926 Operating Mode A1 10kΩ VR SENSOR 10kΩ Figure 3. MAX9924/MAX9926 Operating Mode A2 ______________________________________________________________________________________ IN+ 1nF COUT IN- MAX9924 MAX9926 BIAS 1kΩ + ZERO_EN ...
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... Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold 10kΩ VR SENSOR 10kΩ 1kΩ 10μF || 0.1μF Figure 4. MAX9924/MAX9926 Operating Mode B 10kΩ VR SENSOR 10kΩ 1kΩ 10μF || 0.1μF Figure 5. MAX9924/MAX9926 Operating Mode C 16 ______________________________________________________________________________________ Application Circuits (continued) IN+ ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold 10kΩ VR 1nF SENSOR 10kΩ 1kΩ 10μF || 0.1μF Figure 6. MAX9925/MAX9927 Operating Mode A 10kΩ VR 1nF SENSOR 10kΩ 1kΩ 10μF || 0.1μF Figure 7. MAX9925/MAX9927 Operating Mode ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold 10kΩ VR 1nF SENSOR 10kΩ 1kΩ 10μF || 0.1μF Figure 8. MAX9925 Operating Mode C 18 ______________________________________________________________________________________ Application Circuits (continued) OUT IN+ COUT IN- MAX9925 BIAS 1kΩ V +5V ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold VR SENSOR ______________________________________________________________________________________ 4. 100kΩ 100kΩ IN AMP 100kΩ IN+ 100kΩ BANDGAP REFERENCE VOLTAGE = BUFFER ...
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... Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold TOP VIEW + IN_THRS1 1 EXT1 2 BIAS1 3 MAX9926 COUT1 4 COUT2 5 BIAS2 6 EXT2 7 INT_THRS2 8 QSOP TOP VIEW + IN+ 1 IN- 2 N.C. 3 MAX9924 BIAS 4 GND 5 μMAX 20 ______________________________________________________________________________________ IN_THRS1 16 IN1+ 15 IN1 ZERO_EN COUT1 12 DIRN COUT2 ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 10 µMAX 16 QSOP ______________________________________________________________________________________ Package Information PACKAGE CODE U10-2 E16-1 α α DOCUMENT NO. ...
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Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold For the latest package outline information and land patterns www.maxim-ic.com/packages. 22 ______________________________________________________________________________________ Package Information (continued) ...
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... REVISION REVISION NUMBER DATE 0 10/08 Initial release Removed future product references for the MAX9926 and MAX9927, updated EC 1 2/09 table 2 3/09 Corrected various errors Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied ...