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LMC7221BIM5X Datasheet(PDF) 10 Page - Texas Instruments |
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LMC7221BIM5X Datasheet(HTML) 10 Page - Texas Instruments |
10 / 20 page LMC7221 SNOS748E – SEPTEMBER 1999 – REVISED MARCH 2013 www.ti.com Figure 18. LAYOUT CONSIDERATIONS The LMC7221 is not an especially fast comparator, so high speed design practices are not required. The LMC7221 is capable of operating with very high impedance inputs, so precautions should be taken to reduce noise pickup with high impedance ( ∼ 100 kΩ and greater) designs and in electrically noisy environments. Keeping high value resistors close to the LMC7221 and minimizing the size of the input nodes is a good practice. With multilayer designs, try to avoid long loops which could act as inductors (coils). Sensors which are not close to the comparator may need twisted pair or shielded connections to reduce noise. PUSH-PULL OUTPUTS, DUAL VERSIONS The LMC7211 is a comparator similar to the LMC7221, but with push-pull outputs which can source current. The performance of the LMC7221 is available in a dual device. Please see the LMC6772 datasheet. For a dual device with push-pull outputs, please see the LMC6762 datasheet. Rail-to-Rail Input Low Power Comparators— Push-Pull Output LMC7221 5-Pin SOT-23, 8-Pin SOIC Single LMC6762 8-Pin SOIC Dual Open Drain Output LMC7221 5-Pin SOT-23, 8-Pin SOIC Single LMC6772 8-Pin SOIC Dual ADDITIONAL 5-Pin SOT-23 TINY DEVICES TI has additional parts available in the space saving SOT-23 Tiny package, including amplifiers, voltage references, and voltage regulators, including the following: 1 MHz gain-bandwidth rail-to-rail input and output amplifier—high input impedance and high gain 700 μA typical LMC7101 current 2.7V, 3V, 5V and 15V specifications. Low power 50 kHz gain-bandwidth rail-to-rail input and output amplifier with 25 μA typical current specified at 2.7V, LMC7111 3.0V, 3.3V, 5V and 10V. LM7131 Tiny Video amp with 70 MHz gain bandwidth 3V, 5V and ±5V specifications. LP2980 Micropower SOT 50 mA Ultra Low-Dropout Regulator. LM4040 Precision micropower shunt voltage reference. Fixed voltages of 2.500V, 4.096V, 5.000V, 8.192V and 10.000V. LM4041 Precision micropower shut voltage reference 1.225V and adjustable. LM385 Low current voltage reference. Fixed Voltages of 1.2V and 2.5V. 10 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LMC7221 |
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