MAX921 Maxim, MAX921 Datasheet
MAX921
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MAX921 Summary of contents
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... 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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... Current, REF....................................................................20mA Current, OUT_ .................................................................50mA Voltage, REF ....................................(V+ + 0.3V) to (V- – 0.3V) Voltage, OUT_ (MAX921/924) .....(V+ + 0.3V) to (GND – 0.3V) Voltage OUT_ (MAX922/923)...........(V+ + 0.3V) to (V- – 0.3V) OUT_ Short-Circuit Duration (V+ ≤ 5.5V) ...............Continuous Stresses beyond those listed under “Absolute Maximum Ratings‘” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...
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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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... NO CHANGE 0 -20 -40 OUTPUT LOW -60 - (mV) REF HYST _______________________________________________________________________________________ Single/Dual-Supply Comparators Typical Operating Characteristics (continued) MAX921 SUPPLY CURRENT vs. TEMPERATURE 4.5 IN+ = (IN- + 100mV 3 2.0 140 -60 - 100 TEMPERATURE (°C) MAX924 SUPPLY CURRENT vs. TEMPERATURE ...
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... TOTAL SUPPLY VOLTAGE (V) Ground. Connect to V- for single-supply operation. Output swings from V+ to GND. Comparator A output. Sinks and sources current. Swings from V+ to V-. V- Negative supply. Connect to ground for single-supply operation (MAX921). IN+ Noninverting comparator input Noninverting input of comparator A IN- Inverting comparator input ...
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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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... It also produces faster hysteresis action and consumes much less current than circuits using external positive feedback. Power-Supply and Input Signal Ranges This family of devices operates from a single +2.5V to +11V power supply. The MAX921 and MAX924 have a MAX922 OUTA 1 2 ...
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... With 100mV of overdrive, propagation delay is typically 3µs. The Typical Operating Characteristics show the propagation delay for various overdrive levels. The MAX921 and MAX924 output swings from V+ to 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 ± ...
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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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... With a 10mA load, it typically provides a voltage of (V quiescent current. This circuit takes advantage of the four key features of the MAX921: 2.5µA supply current, IN internal reference, hysteresis, and high current output. Using the component values shown, the three- ...
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... Figure 6. Window Detector The high output source capability of the MAX921 series is useful for driving LEDs. An example of this is the simple four-stage level detector shown in Figure 7. The full-scale threshold (all LEDs on) is given by V (R1 + R2)/R1 volts. The other thresholds are at 3/4 full scale, 1/2 full scale, and 1/4 full scale ...
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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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... INA- MAX924 4 13 INA INB INB REF 8 9 DIP/Narrow SO 14 ______________________________________________________________________________________ _Ordering Information (continued) PART MAX921MSA/PR MAX921MSA/PR-T OUT 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 ...
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... Topographies MAX921/MAX922/MAX923 0.059" (1.50mm) DIE PAD MAX921 MAX922 1 GND OUTA IN+ INA+ 5 IN- INA- 6 HYST INB- 7 REF INB OUT OUTB TRANSISTOR COUNT: 164 SUBSTRATE CONNECTED TO V+ ______________________________________________________________________________________ Single/Dual-Supply Comparators OUTA 0.075" ...
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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 © ...