MAX923 Maxim, MAX923 Datasheet
MAX923
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MAX923 Summary of contents
Page 1
... MAX921–MAX924 minimize parasitic feedback, which makes them easier to use. The single MAX921 and dual MAX923 provide a unique and simple method for adding hysteresis without feedback and complicated equations, simply by using the HYST pin and two resistors. ...
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... HYST = REF M temp. range T = +25°C A MAX924 C/E temp. ranges M temp. range V = 2.5V CM C/E temp. ranges IN+ = IN- = 2.5V M temp. range MAX921, MAX923 V- to (V+ – 1.3V 2.5V to 11V 100Hz to 100kHz MAX921, MAX923 Overdrive = 10mV T = +25°C, 100pF load A Overdrive = 100mV = +70°C) A MIN TYP MAX UNITS 2 2.5 3 ...
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... V- = GND = 0V MIN PARAMETER Output High Voltage Output Low Voltage X REFERENCE (MAX921/MAX923/MAX924 ONLY) Reference Voltage Source Current Sink Current Voltage Noise Note 1: MAX924 comparators work below 2.5V, see Low-Voltage Operation section for more details. ELECTRICAL CHARACTERISTICS: 3V OPERATION ( GND = 0V ...
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... LOAD CURRENT (mA) 4 _______________________________________________________________________________________ , unless otherwise noted.) MAX CONDITIONS V- to (V+ – 1.3V 2.5V to 11V 100Hz to 100kHz MAX921, MAX923 Overdrive = 10mV T = +25°C, 100pF load A Overdrive = 100mV C/E temp. ranges 10mA; OUT MAX92_ M temp. range 6mA OUT MAX922/ C/E temp. ranges 0.8mA; OUT MAX923 M temp ...
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... REFERENCE VOLTAGE vs. TEMPERATURE 1.22 MILITARY TEMP. RANGE 1.21 EXTENDED TEMP. RANGE 1.20 COMMERCIAL 1.19 TEMP. RANGE 1.18 1.17 1.16 1.15 1.14 -60 -40 - 100 120 TEMPERATURE (°C) MAX923 SUPPLY CURRENT vs. TEMPERATURE 5.0 4 3.5 3 2.0 -60 - 100 TEMPERATURE (°C) HYSTERESIS CONTROL 80 60 OUTPUT HIGH CHANGE 0 -20 ...
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... RESPONSE TIME (μs) MAX924 RESPONSE TIME AT LOW SUPPLY VOLTAGES 100 SOURCE CURRENT INTO 0.75V LOAD 10 1 SINK CURRENT 0.4V OUT 0.1 1.0 1.5 2.0 SINGLE-SUPPLY VOLTAGE (V) ____________________________________________________________Pin Descriptions PIN NAME MAX921 MAX922 MAX923 1 – – GND – OUTA – – – INA+ 4 – ...
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... Descriptions (continued) PIN MAX921 MAX922 MAX923 – – – 6 – 6 – – – – PIN NAME MAX924 1 OUTB 2 OUTA INA- 5 INA+ 6 INB- 7 INB+ 8 REF INC- 11 INC+ 12 IND- 13 IND+ 14 GND 15 OUTD 16 OUTC _______________________________________________________________________________________ Single/Dual-Supply Comparators ...
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... Operating the MAX921 and MAX924 at ±5V provides TTL/CMOS compatibility when monitoring bipolar input signals. TTL compatibility for the MAX922 and MAX923 is achieved by operation from a single +5V supply. Low-Voltage Operation (MAX924 Only) The guaranteed minimum operating voltage is 2.5V (or ± ...
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... GND, so TTL compatibility is assured by using a +5V ±10% supply. The negative supply does not affect the output swing, and can range from 0V to -5V ±10%. The MAX922 and MAX923 have no GND pin, and their outputs swing from V+ to V-. Connect V- to ground and +5V supply to achieve TTL compatibility. ...
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... Hysteresis (MAX922/MAX924) Hysteresis can be set with two resistors using positive feedback, as shown in Figure 4. This circuit generally draws more current than the circuits using the HYST pin on the MAX921 and MAX923, and the high 10 ______________________________________________________________________________________ feedback impedance slows hysteresis. The design procedure is as follows: 1. Choose R3. The leakage current of IN+ is under 1nA (up to +85° ...
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... For example: 2MΩ x 10µF x 4.6 = 92sec. The actual time will vary with both the leakage current of the capacitor and the voltage applied to the circuit. The MAX923 is ideal for making window detectors (undervoltage/overvoltage detectors). The schematic is shown in Figure 6, with component values selected for an 4 ...
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... Figure 8 shows a circuit to shift from bipolar ±5V inputs to TTL signals. The 10kΩ resistors protect the + R3) comparator inputs, and do not materially affect the operation of the circuit. + R3) R5 × . REF R4 = 5.5V = 4.5V +5V V+ INA+ OUTA UNDERVOLTAGE HYST POWER GOOD REF OUTB OVERVOLTAGE INB- V- MAX923 Bar-Graph Level Gauge Level Shifter = IN ...
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MAX924 1.182V 8 REF V- 5 INA+ 182k OUTA 1V 4 INA- 7 INB+ 250k OUTB INB- 750mV 6 11 INC+ 250k OUTC 500mV 10 INC- 13 IND+ 250k OUTD 250mV 12 IND- GND 250k ...
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... MAX922CPA V+ MAX922CSA REF MAX922CUA HYST MAX922C/D MAX922EPA MAX922ESA MAX922MJA OUTB MAX922MSA/PR V+ MAX922MSA/PR-T INB+ MAX923CPA MAX923CSA INB- MAX923CUA MAX923C/D MAX923EPA MAX923ESA OUTB MAX923MJA V+ MAX923MSA/PR REF MAX923MSA/PR-T HYST MAX924CPE MAX924CSE MAX924C/D MAX924EPE OUTC MAX924ESE MAX924MJE OUTD MAX924MSE/PR GND MAX924MSE/PR-T IND+ *Dice are tested at T IND- **Contact factory for availability ...
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... OUT OUTB TRANSISTOR COUNT: 164 SUBSTRATE CONNECTED TO V+ ______________________________________________________________________________________ Single/Dual-Supply Comparators OUTA 0.075" (1.91mm INA- INA+ INB- MAX923 OUTA V- V- INA+ TRANSISTOR COUNT: 267 INB- SUBSTRATE CONNECTED TO V+ HYST REF V+ V+ OUTB Ultra Low-Power, MAX924 OUTB OUTC OUTD GND (2 ...
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... Ultra Low-Power, Single/Dual-Supply Comparators For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 8 Plastic DIP 16 Plastic DIP µMAX 8 CERDIP 16 CERDIP 16 ______________________________________________________________________________________ Package Information PACKAGE CODE P8-1 P16-1 S8-2 S16-3 U8-1 J8-1 J16-3 DOCUMENT NO. 21-0043 21-0043 21-0041 21-0041 21-0036 ...
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... Updated Ordering Information Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © ...