MAX4291 Maxim, MAX4291 Datasheet
MAX4291
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MAX4291 Summary of contents
Page 1
... The combination of ultra-low-voltage operation, rail- to-rail inputs/output, and low-power consumption makes these devices ideal for any portable/two-cell battery-pow- ered system. The single MAX4291 is offered in an ultra-small 5-pin SC70 package. The dual MAX4292 is offered in a space-saving 8-bump, 1.5mm X 1.5mm footprint, ultra chip-scale package (UCSP™). ...
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... V 5. 5.0V 5. < 10mV IN+ IN- Inferred from CMRR test Tested for MAX4291 1.8V; MAX4292/MAX4294 V = 1.8V CC Tested for MAX4291 5.0V, MAX4292/MAX4294 V = 5. +25°C, unless otherwise noted MIN TYP MAX UNITS 1.8 5.5 V 100 210 µA 100 255 ±400 ±2500 µV ± ...
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... 10kHz 10kHz 1V/V, no sustained oscillations VCL = V / 100k connected to V OUT CC L CONDITIONS Inferred from PSRR test 1. 5.0V CC MAX4291 OS MAX4292/MAX4294 / +25°C, unless otherwise noted MIN TYP 80 120 V - 0.02V CC 80 110 130 V - 0.02V CC 80 120 ...
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... V / 100k connected CONDITIONS 5.0V 5. 5.0V 5. Inferred from CMRR test Tested for MAX4291 0 V 1.8V 1.8V MAX4292/MAX4294 CC Tested for MAX4291 0 V 5.0V, CM MAX4292/MAX4294 100k , L 0.02V V V OUT 1. 0. OUT 100k , L 0.02V V V OUT ...
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OUT CC SUPPLY CURRENT PER AMPLIFIER vs. TEMPERATURE 160 150 140 130 V = 5.5V CC 120 110 100 1. ...
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... 5. -55 -40 -25 - 110 125 TEMPERATURE ( C) GAIN AND PHASE vs. FREQUENCY (C = 100pF) L MAX4291 toc17 1000V -10 -20 -30 -40 0 100 1000 FREQUENCY (kHz) OPEN-LOOP GAIN vs. OUTPUT SWING LOW ) ( ...
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... SMALL-SIGNAL TRANSIENT RESPONSE (INVERTING CONFIGURATION 2. -2. 100mV = 100mV OUT 0 1 s/div (INVERTING CONFIGURATION) MAX4291 toc23 -2. -2V 2V -2V 10 s/div = SOURCE CURRENT (mA) MAX4291 toc21 100mV 0 100mV 0 7 ...
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... Detailed Description Rail-to-Rail Input Stage The MAX4291/MAX4292/MAX4294 have rail-to-rail inputs and output stages that are specifically designed for low-voltage, single-supply operation in the smallest package possible. The input stage consists of separate NPN and PNP differential stages, which operate togeth provide a common-mode range extending to both supply rails ...
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... Table 1. MAX4291 Characteristics with Typical Battery Systems RECHARGE- BATTERY TYPE ABLE Alkaline (2 cells) No Nickel-Cadmium Yes (2 cells) Lithium-Ion Yes (1 cell) Nickel-Metal- Yes Hydride (2 cells) IN+ 10.6k IN- 10.6k Figure 2. Input Protection Circuit capacitance) creates a parasitic pole that produces an underdamped signal response. Reducing input capaci- tance or placing a small capacitor across the feedback resistor improves response in this case. The MAX4291/MAX4292/MAX4294 family’ ...
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... The contours on the graph depict the output current value, based on driving the output voltage to within 50mV, 100mV, and 200mV of either power-sup- ply rail. For example, a MAX4291 running from a single 1.8V /2, although CC supply, operating at T OUTPUT SOURCE CURRENT vs ...
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... Using the MAX4291/MAX4292/MAX4294 Although optimized for use as operational amplifiers, the MAX4291/MAX4292/MAX4294 can also be used as load resistor rail-to-rail I/O comparators. Typical propagation delay depends on the input overdrive voltage, as shown in Figure 8. External hysteresis can be used to minimize the risk of output oscillation. The positive feedback cir- cuit, shown in Figure 9, causes the input threshold to change when the output voltage changes state ...
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... Low-Power Current Monitors The MAX4291/MAX4292/MAX4294 are ideal for appli- cations powered from a two-cell battery stack. Figure 11 shows an application circuit in which the MAX4291 is used for monitoring the current of a two-cell battery stack. In this circuit, a current load is applied, and the voltage drop at the battery terminal is sensed. ...
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... In conclusion, the UCSP performs reliably through environmental stresses. ______________________________________________________________________________________ Ultra-Small, 1.8V, µPower, Rail-to-Rail I/O Op Amps Layout Issues V OUT Figure 11. Current Monitor for a 2-Cell Battery Stack UCSP Reliability I LOAD MAX4291 Marking Information ORIENTATION PRODUCT ID CODE LOT CODE AAA AAA ...
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... Ultra-Small, 1.8V, µPower, Rail-to-Rail I/O Op Amps TOP VIEW IN+ 1 MAX4291 IN- SC70/SOT23 Chip Information MAX4291 TRANSISTOR COUNT: 149 MAX4292 TRANSISTOR COUNT: 356 MAX4294 TRANSISTOR COUNT: 747 PROCESS: BiCMOS 14 ______________________________________________________________________________________ Pin Configurations (continued) V OUTA OUTB INA- MAX4292 3 6 INB- ...
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... For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Ultra-Small, 1.8V, µPower, Rail-to-Rail I/O Op Amps Package Information 15 ...
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... Ultra-Small, 1.8V, µPower, Rail-to-Rail I/O Op Amps (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages ÿ 0.50±0.1 0.6±0.1 1 0.6±0.1 D TOP VIEW FRONT VIEW Note: The MAX4292 does not have an exposed pad. ...
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... For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Ultra-Small, 1.8V, µPower, Rail-to-Rail I/O Op Amps Package Information (continued) 17 ...
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... For the latest package outline information www.maxim-ic.com/packages.) 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. ...