MAX4244 Maxim, MAX4244 Datasheet
MAX4244
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MAX4244 Summary of contents
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... Rev 3; 9/06 Single/Dual/Quad, +1.8V/10µA, SOT23, General Description The MAX4240–MAX4244 family of micropower op amps operate from a single +1.8V to +5.5V supply or dual ±0.9V to ±2.75V supplies and have Beyond-the-Rails™ inputs and rail-to-rail output capabilities. These ampli- fiers provide a 90kHz gain-bandwidth product while using only 10µA of supply current per amplifier. The MAX4241/MAX4243 have a low-power shutdown mode that reduces supply current to less than 1µ ...
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... V = 5.0V CC MAX4241ESA MAX4242ESA/MAX4243ESD/ - 0.2V) ≤ V ≤ MAX4244ESD + 0.2V) CC MAX4240EUK/MAX424_EUA/ MAX4243EUB < 1.0V IN+ IN > 2.5V IN+ IN- MAX4241ESA MAX4242ESA/MAX4243ESD/ = 1.8V CC MAX4244ESD MAX4240EUK/MAX424_EUA/ MAX4243EUB MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD = 5.0V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB / 2, SHDN = +25°C, unless MIN TYP MAX UNITS 1.8 5 µ 1.0 1.5 µA 2.0 3.0 ±0.20 ±0.75 ±0.20 ±0.88 mV ± ...
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... CH ISO Isolation (Note 6) Gain-Bandwidth GBW Product Phase Margin m Gain Margin G m Slew Rate SR _______________________________________________________________________________________ Beyond-the-Rails Op Amps = 100kΩ tied to V OUT CC L CONDITIONS MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD 1.8V ≤ V ≤ 5.5V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB 0.2V) ≤ V ≤ EE OUT (V - 0.2V 5. 1.8V CC Specified ...
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... CC OUT STEP = 100kΩ tied to V OUT CONDITIONS 5.0V CC MAX4241ESA MAX4242ESA/MAX4243ESD/ - 0.2V) ≤ V ≤ MAX4244ESD + 0.2V) CC MAX4240EUK/MAX424_EUA/ MAX4243EUB / 2, SHDN = +25°C, unless MIN TYP MAX 70 0.05 200 50 150 200 3 = +1V/V 0. SHDN = unless oth MIN ...
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... Beyond-the-Rails Op Amps = 100kΩ tied to V OUT CC L CONDITIONS MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD V = 1.8V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD V = 5.0V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB MAX4241ESA MAX4242ESA/MAX4243ESD/ MAX4244ESD 1.8V ≤ V ≤ 5.5V CC MAX4240EUK/MAX424_EUA/ MAX4243EUB 0.2V) ≤ V ≤ OUT (V - 0.2V 5. 1.8V CC Specified ...
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... Note 3: Input bias current and input offset current are tested with V Note 4: Tested over the specified input common-mode range. Note 5: Tested for 0 ≤ V ≤ Does not include current through external feedback network. OUT CC Note 6: Channel-to-channel isolation specification applies to the MAX4242/MAX4243/MAX4244 only. __________________________________________Typical Operating Characteristics (V = +5.0V ...
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Single/Dual/Quad, +1.8V/10µA, SOT23, ____________________________________Typical Operating Characteristics (continued +5.0V INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE (V = 5.5V +5.5V CC 2.5 0 ...
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... +1.8V +1.8V -60 -40 - 100 TEMPERATURE (°C) MAX4242/MAX4243/MAX4244 CROSSTALK vs. FREQUENCY - 10k L -70 -80 -90 -100 -110 10 100 1k 10k FREQUENCY (Hz) LOAD RESISTOR vs. CAPACITIVE LOAD 1000 10% OVE RSHOOT REGIO N OF MAR GINAL STABILITY ...
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Single/Dual/Quad, +1.8V/10µA, SOT23 +5.0V /2, V SHDN _______________________________________________________________________________________ Beyond-the-Rails Op Amps Typical Operating Characteristics (continued 100kΩ / +25°C unless ...
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... Reducing input capacitance or placing a small capacitor across the feedback resistor improves response in this case. The MAX4240–MAX4244 family’s inputs are protected from large differential input voltages by internal 2.2kΩ series resistors and back-to-back triple-diode stacks across the inputs (Figure 2). For differential input volt- ages (much less than 1.8V), input resistance is typically 45MΩ ...
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... Conversely, the bias current increases with the same curve. Rail-to-Rail Output Stage The MAX4240–MAX4244 output stage can drive 10kΩ load and still swing to within 40mV of the rails. Figure 3 shows the output voltage swing of a MAX4240 configured as a unity-gain buffer, powered from a single +2V supply voltage ...
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... Figures 7a and 7b show the typical current source and sink capability of the MAX4240–MAX4244 family as a function of supply voltage and ambient temperature. The contours on the graph depict the output current 12 ...
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... (+0.9V in this case). CC Driving Capacitive Loads The MAX4240–MAX4244 are unity-gain stable for loads up to 200pF (see Load Resistor vs. Capacitive Load graph in Typical Operating Characteristics ). Applica- tions that require greater capacitive drive capability should use an isolation resistor between the output and the capacitive load (Figure 8) ...
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... Beyond-the-Rails Op Amps Using the MAX4240–MAX4244 as Comparators Although optimized for use as operational amplifiers, the MAX4240–MAX4244 can also be used as rail-to-rail I/O comparators. Typical propagation delay depends on the input overdrive voltage, as shown in Figure 9. External hysteresis can be used to minimize the risk of output oscillation. The positive feedback circuit, shown in Figure 10, causes the input threshold to change when the output voltage changes state ...
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... OUTB INA- 12 INB- INA+ 11 INB N.C. INB+ 9 SHDNB INB- 8 N.C. OUTB SO EE OUTA 1 10 INA- 2 MAX4243 INA SHDNA 5 MAX 1 14 OUTD 2 13 IND IND+ MAX4244 INC INC OUTC OUTB 8 INB- 7 INB+ 6 SHDNB 15 ...
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... Revision History Pages changed at Rev 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. ...