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LMC7221BIM5X Datasheet(PDF) 10 Page - Texas Instruments

Part # LMC7221BIM5X
Description  LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LMC7221BIM5X Datasheet(HTML) 10 Page - Texas Instruments

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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
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Copyright © 1999–2013, Texas Instruments Incorporated
Product Folder Links: LMC7221


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