LMC7211AIM5X National Semiconductor, LMC7211AIM5X Datasheet - Page 11

• Manufacturer Part Number: LMC7211AIM5X
• Description: IC,VOLT COMPARATOR,SINGLE,CMOS,TSOP,5PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LMC7211AIM5X

• Rohs Compliant: NO

Application Information
7.0 Layout Considerations
The LMC7211 is not an especially fast comparator, so high
speed design practices are not required. The LMC7211 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 LMC7211 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.
8.0 Open Drain Output, Dual Versions
The LMC7221 is a comparator similar to the LMC7211, but
with an open drain output which allows the output voltage to
be different (higher or lower) than the supply voltage. The
open drain output is like the open collector output of a logic
gate. This makes the LMC7221 very useful for mixed voltage
systems. Many systems will have different voltages for the
analog and microprocessor sections. Please see the
LMC7221 datasheet for details.
FIGURE 7.
(Continued)
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11
The performance of the LMC7211 is available in dual de-
vices. Please see the LMC6762 datasheet for details on a
dual push-pull output device. For a dual device with open
drain outputs, please see the LMC6772 datasheet.
Rail-to-Rail Input Low Power Comparators —
9.0 Additional SOT23-5 Tiny Devices
National Semiconductor has additional parts available in the
space saving SOT23 Tiny package, including amplifiers,
voltage references, and voltage regulators. These devices
include —
LMC7101 1 MHz gain-bandwidth rail-to-rail input and output
LMC7111 Low power 50 kHz gain-bandwidth rail-to-rail in-
LM7131
LP2980
LM4040
LM4041
LM385
Contact your National Semiconductor representative for the
latest information.
10.0 Spice Macromodel
A Spice Macromodel is available for the LMC7211 compara-
tor on the National Semiconductor Amplifier Macromodel
disk. Contact your National Semiconductor representative to
obtain the latest version.
LMC7211
LMC6762
LMC7221
LMC6772
Push-Pull Output
Open Drain Output
amplifier — high input impedance and high gain
700 µA typical current 2.7V, 3V, 5V and 15V
specifications.
put and output amplifier with 25 µA typical current
specified at 2.7V, 3.0V, 3.3V, 5V and 10V.
Tiny Video amp with 70 MHz gain bandwidth 3V,
5V and
Micropower SOT 50 mA Ultra Low-Dropout
Regulator.
Precision micropower shunt voltage reference.
Fixed voltages of 2.500V, 4.096V, 5.000V, 8.192V
and 10.000V.
Precision micropower shut voltage reference
1.225V and adjustable.
Low current voltage reference. Fixed Voltages of
1.2V and 2.5V.
SOT23-5, SO-8
SO-8,
SOT23-5, SO-8
SO-8, DIP
±
5V specifications.
Single
Dual
Single
Dual
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