MAX931 Maxim Integrated Products, MAX931 Datasheet
MAX931
Available stocks
Related parts for MAX931
MAX931 Summary of contents
Page 1
... PACK- Ordering Information continued on last page. HYSTERESIS AGE For similar devices guaranteed over the military temp. range, see the MAX921-MAX924 data sheet. The MAX931, MAX933, and 8-Pin MAX934 are pin-compatible with the 1% accurate MAX921, Yes DIP/SO/ MAX923, and MAX924, respectively. The MAX932 and µ ...
Page 2
... Current, REF....................................................................20mA Current, OUT_ .................................................................50mA Voltage, REF ....................................(V+ + 0.3V) to (V- – 0.3V) Voltage, OUT_ (MAX931/934) .....(V+ + 0.3V) to (GND – 0.3V) Voltage, OUT_ (MAX932/933)..........(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 ...
Page 3
... C/E temp. ranges IN+ = (IN- + 100mV +25°C A MAX933, HYST = REF C/E temp. ranges T = +25°C A MAX934 C/E temp. ranges V = 1.5V CM IN+ = IN- = 1.5V, C/E temp. ranges MAX931, MAX932, MAX933 MIN TYP MAX UNITS V+ – 0 0.4 V GND + 0.4 1.158 1.182 1.206 V 1.147 1.217 15 25 µ ...
Page 4
... Reference Voltage Source Current Sink Current Voltage Noise 4 _______________________________________________________________________________________ , unless otherwise noted.) MAX CONDITIONS V- to (V+ – 1.3V 2.5V to 11V 100Hz to 100kHz MAX931, MAX932, MAX933 Overdrive = 10mV T = +25°C, 100pF load A Overdrive = 100mV C/E temp. ranges 10mA OUT MAX932, MAX933 C/E temp. ranges ...
Page 5
... TEMPERATURE ( C) _______________________________________________________________________________________ Ultra Low-Power, Low-Cost Comparators with 2% Reference OUTPUT VOLTAGE HIGH vs. LOAD CURRENT 5 4.5 4.0 3.5 3.0 2 2.0 1 LOAD CURRENT (mA) MAX931 SUPPLY CURRENT vs. TEMPERATURE 4.5 IN+ = IN- + 100mV 4 5V 3 2.0 -60 - 100 140 TEMPERATURE ( C) MAX934 SUPPLY CURRENT vs. TEMPERATURE 10 IN+ = (IN- + 100mV) ...
Page 6
Ultra Low-Power, Low-Cost Comparators with 2% Reference ____________________________Typical Operating Characteristics (continued) ( GND +25°C, unless otherwise noted.) A HYSTERESIS CONTROL 80 60 OUTPUT HIGH CHANGE -20 -40 OUTPUT LOW -60 ...
Page 7
... NAME GND Ground. Connect to V- for single-supply operation. Output swings from V+ to GND. OUTA Comparator A output. Sinks and sources current. Swings from V+ to V-. V- Negative supply. Connect to ground for single-supply operation (MAX931). IN+ Noninverting comparator input INA+ Noninverting input of comparator A IN- Inverting comparator input ...
Page 8
... Connect V- to GND when operating the MAX931 and the MAX934 from a single supply. The maximum supply voltage in this case is still 11V. For proper comparator operation, the input signal can be driven from the negative supply (V-) to within one volt of the positive supply (V+ - 1V) ...
Page 9
... With 100mV of overdrive, propagation delay is typically 3µs. The Typical Operating Characteristics show the propagation delay for various overdrive levels. The MAX931 and MAX934 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 ± ...
Page 10
... 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 MAX931/MAX932/MAX933, and the high feedback impedance slows hysteresis. The design procedure is as follows: 1. Choose R3. The leakage current of IN+ is under 1nA (up to +85° ...
Page 11
... BATT This circuit takes advantage of the four key features of the MAX931: 2.5µA supply current, an internal reference, hysteresis, and high current output. Using the component values shown, the three-resistor voltage divider programs the maximum ±50mV of hysteresis and sets the IN- voltage at 100mV ...
Page 12
... UTH REF H 4.484V, where the hysteresis voltage V H Bar-Graph Level Gauge The high output source capability of the MAX931 series is useful for driving LEDs. An example of this is the simple four-stage level detector shown in Figure 7. 12 ______________________________________________________________________________________ The full-scale threshold (all LEDs on) is given (R1 + R2)/R1 volts ...
Page 13
V+ MAX934 10k INA+ V INA INA- 10k INB+ V INB INB- 10k INC+ V INC INC- 10k IND+ V IND OUTD IND- V- GND -5V Figure 8. Level Shifter: ±5V Input to CMOS Output ______________________________________________________________________________________ Ultra Low-Power, Low-Cost ...
Page 14
... MAX934EPE REF MAX934ESE HYST For similar devices guaranteed over the military temp. range, see the MAX921-MAX924 data sheet. The MAX931, MAX933, and MAX934 are pin-compatible with the 1% accurate MAX921, MAX923, and MAX924, respectively. The MAX932 and MAX922 are not pin-compatible. OUTB ...
Page 15
Information ______________________________________________________________________________________ Ultra Low-Power, Low-Cost Comparators with 2% Reference 15 ...
Page 16
... 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. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1997 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...