LMC7215MWA [NSC]
IC COMPARATOR, 6000 uV OFFSET-MAX, 24000 ns RESPONSE TIME, UUC, WAFER, Comparator;![LMC7215MWA](http://pdffile.icpdf.com/pdf2/p00298/img/icpdf/LMC7225MDA_1803499_icpdf.jpg)
型号: | LMC7215MWA |
厂家: | ![]() |
描述: | IC COMPARATOR, 6000 uV OFFSET-MAX, 24000 ns RESPONSE TIME, UUC, WAFER, Comparator |
文件: | 总17页 (文件大小:466K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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National Semiconductor is now part of
Texas Instruments.
Search http://www.ti.com/ for the latest technical
information and details on our current products and services.
August 2000
LMC7215/LMC7225
Micro-Power, Rail-to-Rail CMOS Comparators with
™
Push-Pull/Open-Drain Outputs and TinyPak Package
General Description
Features
The LMC7215/LMC7225 are ultra low power comparators
with a maximum of 1 µA power supply current. They are de-
signed to operate over a wide range of supply voltages, from
2V to 8V.
(Typical unless otherwise noted)
n Ultra low power consumption 0.7 µA
n Wide range of supply voltages 2V to 8V
n Input common-mode range beyond V+ and V−
n Open collector and push-pull output
n High output current drive: ( VS = 5V) 45 mA
n Propagation delay ( VS = 5V, 10 mV overdrive) 25 µs
The LMC7215/LMC7225 have a greater than rail-to-rail com-
mon mode voltage range. This is a real advantage in single
supply applications.
@
@
The LMC7215 features a push-pull output stage. This fea-
ture allows operation with absolute minimum amount of
power consumption when driving any load.
n Tiny SOT23-5 package
n Latch-up resistance 300 mA
>
The LMC7225 features an open drain output. By connecting
an external resistor, the output of the comparator can be
used as a level shifter to any desired voltage to as high as
15V.
Applications
n Laptop computers
n Mobile phones
n Metering systems
n Hand-held electronics
n RC timers
n Alarm and monitoring circuits
n Window comparators, multivibrators
The LMC7215/LMC7225 are designed for systems where
low power consumption is the critical parameter.
Guaranteed operation over the full supply voltage range of
2.7V to 5V and rail-to-rail performance makes this compara-
tor ideal for battery-powered applications.
Connection Diagrams
8–Pin SO–8
5–Pin SOT23-5
DS012853-2
Top View
DS012853-1
Top View
™
TinyPak is a trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation
DS012853
www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(soldering, 10 sec)
260˚C
−65˚C to +150˚C
150˚C
Storage Temperature Range
Junction Temperature (Note 4)
Operating Ratings(Note 1)
ESD Tolerance (Note 2)
Differential Input Voltage
Voltage at Input/Output Pin
Supply Voltage (V+–V−)
Current at Input Pin
2 kV
(VCC)+0.3V to (−VCC)−0.3V
(VCC)+0.3V to (−VCC)−0.3V
10V
Supply Voltage
2V ≤ VCC ≤ 8V
Junction Temperature Range
LMC7215IM, LMC7225IM
−40˚C ≤ TJ ≤ +85˚C
±
5 mA
Thermal Resistance (θJA
)
±
Current at Output Pin (Note 3)
Current at Power Supply Pin
Lead Temperature
30 mA
40 mA
M Package, 8-Pin Surface Mount
SOT23-5 Package
165˚C/W
325˚C/W
2.7V to 5V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V to 5V, V− = 0V, VCM = VO = V+/2. Boldface limits
apply at the temperature extremes.
Typ
LMC7215
LMC7225
Symbol
VOS
Parameter
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
Input Offset Voltage
1
2
6
6
mV
max
8
8
TCVOS
Input Offset Voltage
Average Drift
µV/˚C
IB
Input Current
5
1
fA
fA
IOS
Input Offset Current
Common Mode
Rejection Ratio
Power Supply
CMRR
(Note 7)
V+ = 2.2V to 8V
80
60
60
60
60
dB
min
dB
min
dB
V
PSRR
90
Rejection Ratio
Voltage Gain
AV
140
3.0
CMVR
Input Common-Mode
Voltage Range
V+ = 2.7V
2.9
2.7
0.0
0.2
5.2
5.0
−0.2
0.0
1.8
1.7
2.3
2.2
4.6
4.5
0.4
0.5
0.4
0.5
0.4
0.5
2.9
2.7
0.0
0.2
5.2
5.0
−0.2
0.0
NA
>
CMRR 50 dB
min
V
V+ = 2.7V
−0.2
5.3
>
CMRR 50 dB
max
V
V+ = 5.0V
>
CMRR 50 dB
min
V
V+ = 5.0V
−0.3
2.05
2.05
4.8
>
CMRR 50 dB
max
V
VOH
Output Voltage High
V+ = 2.2V
IOH = 1.5 mA
V+ = 2.7V
min
V
NA
NA
IOH = 2.0 mA
V+ = 5.0V
min
V
IOH = 4.0 mA
V+ = 2.2V
min
V
VOL
Output Voltage Low
0.17
0.17
0.2
0.4
0.5
0.4
0.5
0.4
0.5
NA
NA
IOH = 1.5 mA
V+ = 2.7V
max
V
IOH = 2.0 mA
V+ = 5.0V
max
V
IOH = 4.0 mA
V+ = 2.7V, Sourcing
V+ = 5.0V, Sourcing
V+ = 2.7V, Sinking
max
mA
mA
mA
ISC+
Output Short Circuit
Current (Note 10)
Output Short Circuit
15
50
12
ISC−
www.national.com
2
2.7V to 5V Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V to 5V, V− = 0V, VCM = VO = V+/2. Boldface limits
apply at the temperature extremes.
Typ
LMC7215
Limit
LMC7225
Limit
Symbol
ILeakage
IS
Parameter
Conditions
(Note 5)
Units
(Note 6)
(Note 6)
Current (Note 10)
V+ = 5.0V, Sinking
V+ = 2.2V
30
0.01
0.7
mA
nA
Output Leakage Current
V
IN+ = 0.1V, VIN− = 0V,
NA
500
max
VOUT = 15V
V+ = 5.0V
Supply Current
1
1
µA
VIN+ = 5V, VIN− = 0V
1.2
1.2
max
AC Electrical Characteristics
Unless otherwise specified, TJ = 25˚C, V+ = 5V, V− = 0V, VCM = V+/2
LMC7215
LMC7225
Symbol
Parameter
Rise Time
Conditions
Typ
(Note 5)
1
Typ
Units
(Notes 5, 8)
trise
tfall
Overdrive = 10 mV (Note 8)
Overdrive = 10 mV (Note 8)
12.2
0.35
24
µs
µs
µs
Fall Time
0.4
24
tPHL
Propagation Delay
(High to Low)
(Notes 8, 9)
Overdrive = 10 mV
Overdrive = 100 mV
12
12
V+ = 2.7V
Overdrive = 10 mV
Overdrive = 100 mV
Overdrive = 10 mV
Overdrive = 100 mV
Overdrive = 10 mV
Overdrive = 100 mV
17
17
µs
µs
µs
(Notes 8, 9)
(Notes 8, 9)
11
11
tPLH
Propagation Delay
(Low to High)
24
29
12
17
V+ = 2.7V
17
22
(Notes 8, 9)
11
16
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5 kΩ in series with 100 pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C.
Note 4: The maximum power dissipation is a function of T
, θ , and T . The maximum allowable power dissipation at any ambient temperature is
A
J(max) JA
P
= (T
− T )/θ . All numbers apply for packages soldered directly into a PC board.
J(max) A JA
D
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: CMRR measured at V
= 0V to 2.5V and 2.5V to 5V when V = 5V, V
= 0.2V to 1.35V and 1.35V to 2.7V when V = 2.7V. This eliminates units that
CM
S
C
M
S
have large V
at the V
extremes and low or opposite V
at V
= V /2.
OS
CM
OS
CM S
Note 8: All measurements made at 10 kHz. A 100 kΩ pull-up resistor was used when measuring the LMC7225. C
= 50 pF including the test jig and scope probe.
LOAD
The rise times of the LMC7225 are a function of the R-C time constant.
Note 9: Input step voltage for the propagation measurements is 100 mV.
Note 10: Do not short the output of the LMC7225 to voltages greater than 10V or damage may occur.
3
www.national.com
Typical Performance Characteristics TA= 25˚C unless otherwise specified
Supply Current vs
Supply Voltage
Prop Delay vs VSupply
Prop Delay vs Overdrive
DS012853-12
DS012853-13
DS012853-3
Short Circuit Current vs
VSupply
Output Voltage vs Output
Current LMC7215
Output Voltage vs
Output Current
DS012853-14
DS012853-15
DS012853-16
Output Voltage vs
Output Current LMC7215
Output Voltage vs
Output Current
Output Leakage Current
vs Output Voltage
LMC7225
DS012853-17
DS012853-18
DS012853-19
www.national.com
4
The exceptionally high gain of these comparators, 10,000V/
mV, eliminates this problem. Less then 1 µV of change on
the input will drive the output from one rail to the other rail.
Typical Performance
Characteristics TA= 25˚C unless otherwise
specified (Continued)
If the input signal is noisy, the output cannot ignore the noise
unless some hysteresis is provided by positive feedback.
Output Leakage Current
vs Output Voltage
LMC7225
DS012853-5
FIGURE 2.
INPUT VOLTAGE RANGE
The LMC7215/25 have input voltage ranges that are larger
than the supply voltage guarantees that signals from other
parts of the system cannot overdrive the inputs. This allows
sensing supply current by connecting one input directly to
the V+ line and the other to the other side of a current sense
resistor. The same is true if the sense resistor is in the
ground return line.
DS012853-20
Application Information
RESPONSE TIME
Sensing supply voltage is also easy by connecting one input
directly to the supply.
Depending upon the amount of overdrive, the delay will typi-
cally be between 10 µs to 200 µs. The curve showing delay
vs overdrive in the “Typical Characteristics” section shows
the delay time when the input is preset with 100 mV across
the inputs and then is driven the other way by 1 mV to 500
mV.
The inputs of these comparators are protected by diodes to
both supplies. This protects the inputs from both ESD as well
as signals that greatly exceed the supply voltages. As a re-
sult, current will flow through these forward biased diodes
whenever the input voltage is more than a few hundred mil-
livolts larger than the supplies. Until this occurs, there is es-
sentially no input current. As a result, placing a large resistor
in series with any input that may be exposed to large volt-
ages, will limit the input current but have no other noticeable
effect.
The transition from high to low or low to high is fast. Typically
1 µs rise and 400 ns fall.
With a small signal input, the comparators will provide a
square wave output from sine wave inputs at frequencies as
high as 25 kHz. Figure 1 shows a worst case example where
±
a
5 mV sine wave is applied to the input. Note that the out-
If the input current is limited to less than 5 mA by a series re-
sistor, (see Figure 2), a threshold or zero crossing detector,
that works with inputs from as low as a few millivolts to as
high as 5,000V, is made with only one resistor and the com-
parator.
put is delayed by almost 180˚.
INPUTS
As mentioned above, these comparators have near zero in-
put current. This allows very high resistance circuits to be
used without any concern for matching input resistances.
This also allows the use of very small capacitors in R-C type
timing circuits. This reduces the cost of the capacitors and
amount of board space used.
CAPACITIVE LOADS
The high output current drive allows large capacitive loads
with little effect. Capacitive loads as large as 10,000 pF have
no effect upon delay and only slow the transition by about 3
µs.
DS012853-4
OUTPUT CURRENT
FIGURE 1.
Even though these comparators use less than 1 µA supply
current, the outputs are able to drive very large currents.
NOISE
The LMC7215 can source up to 50 mA when operated on a
5V supply. Both the LMC7215 and LMC7225 can sink over
20 mA. (See the graph of Max IO vs VSupply in the “Typical
Characteristics” section.)
Most comparators have rather low gain. This allows the out-
put to spend time between high and low when the input sig-
nal changes slowly. The result is the output may oscillate be-
tween high and low when the differential input is near zero.
5
www.national.com
Application Information (Continued)
This large current handling ability allows driving heavy loads
directly. LEDs, beepers and other loads can be driven easily.
The push-pull output stage of the LMC7215 is a very impor-
tant feature. This keeps the total system power consumption
to the absolute minimum. The only current consumed is the
less than 1 µA supply current and the current going directly
into the load. No power is wasted in a pull-up resistor when
the output is low. The LMC7225 is only recommended where
a level shifting function from one logic level to another is de-
sired, where the LMC7225 is being used as a drop-in lower
power replacement for an older comparator or in circuits
where more than one output will be paralleled.
POWER DISSIPATION
The large output current ability makes it possible to exceed
the maximum operating junction temperature of 85˚C and
possibly even the absolute maximum junction temperature of
150˚C.
DS012853-7
FIGURE 4. RS = 100Ω
The thermal resistance of the 8-pin surface mount package
is 165˚C/W. Shorting the output to ground with a 2.7V supply
will only result in about 5˚C rise above ambient.
The LMC7215 produces a small current spike of 300 µA
peak for about 400 ns with 2.7V supply and 1.8 mA peak for
400 ns with a 5V supply. This spike only occurs when the
output is going from high to low. It does not occur when going
from low to high. Figure 4 and Figure 5 show what this cur-
rent pulse looks like on 2.7V and 5V supplies. The upper
trace is the output voltage and the lower trace is the supply
current as measured with the circuit in Figure 6 .
The thermal resistance of the much smaller SOT23-5 pack-
age is 325˚C/W. With a 2.7V supply, the raise is only 10.5˚C
but if the supply is 5V and the short circuit current is 50 mA,
this will cause a raise of 41˚C in the SO-8 and 81˚C in the
SOT23-5. This should be kept in mind if driving very low re-
sistance loads.
If the power supply has a very high impedance, a bypass ca-
pacitor of 0.01 µF should be more than enough to minimize
the effects of this small current pulse.
SHOOT-THROUGH
Shoot-through is a common occurrence on digital circuits
and comparators where there is a push-pull output stage.
This occurs when a signal is applied at the same time to both
the N-channel and P-channel output transistors to turn one
off and turn the other on. (See Figure 3.) If one of the output
devices responds slightly faster than the other, the fast one
can be turned on before the other has turned off. For a very
short time, this allows supply current to flow directly through
both output transistors. The result is a short spike of current
drawn from the supply.
DS012853-8
FIGURE 5. RS = 10Ω
DS012853-6
FIGURE 3.
www.national.com
6
LATCH-UP
Application Information (Continued)
In the past, most CMOS IC’s were susceptible to a damaging
phenomena known as latch-up. This occurred when an ESD
current spike or other large signal was applied to any of the
pins of an IC. The LMC7215 and LMC7225 both are de-
signed to make them highly resistant to this type of damage.
They have passed qualification tests with input currents on
any lead up to 300 mA at temperatures up to 125˚C.
SPICE MODELS
For a SPICE model of the LMC7215, LMC7225 and many
other op-amps and comparators, contact the NSC Customer
Response Center at 800-272-9959 or on the World Wide
Web at http://www.national.com/models/index.html.
DS012853-9
FIGURE 6.
Ordering Information
Package
Ordering
Information
LMC7215IM5
LMC7225IM5
LMC7215IM5X
LMC7225IM5X
LMC7215IM
NSC Drawing
Number
Package
Marking
Supplied As
5-Pin SOT 23-5
5-Pin SOT 23-5
5-Pin SOT 23-5
5-Pin SOT 23-5
8-Pin SO-8
MA05A
C02B
1k Tape and Reel
1k Tape and Reel
3k Tape and Reel
3k Tape and Reel
Rails
MA05A
MA05A
MA05A
M08A
C03B
C02B
C03B
LMC7215IM
LMC7225IM
LMC7215IM
LMC7225IM
8-Pin SO-8
LMC7225IM
M08A
Rails
8-Pin SO-8
LMC7215IMX
LMC7225IMX
M08A
2.5k Tape and Reel
2.5k Tape and Reel
8-Pin SO-8
M08A
SOT-23-5 Tape and Reel Specification
REEL DIMENSIONS
DS012853-10
7
www.national.com
SOT-23-5 Tape and Reel Specification (Continued)
8 mm
7.00 0.059 0.512 0.795 2.165 0.331 + 0.059/−0.000 0.567
W1+ 0.078/−0.039
W1 + 2.00/−1.00
W3
330.00 1.50 13.00 20.20 55.00
8.40 + 1.50/−0.00
14.40
Tape Size
A
B
C
D
N
W1
W2
TAPE FORMAT
#
Tape Section
Leader
Cavities
Cavity Status
Empty
Cover Tape Status
0 (min)
Sealed
Sealed
Sealed
Sealed
Sealed
Sealed
(Start End)
Carrier
75 (min)
3000
Empty
Filled
1000
Filled
Trailer
125 (min)
0 (min)
Empty
(Hub End)
Empty
TAPE DIMENSIONS
DS012853-11
±
±
±
0.315 0.012
8 mm
0.130 0.124 0.130 0.126
0.138 0.002
0.055 0.004
0.157
±
±
±
(3.3) (3.15) (3.3)
(3.2)
(3.5 0.05)
(1.4 0.11)
(4)
(8 0.3)
Tape Size
DIM
A
DIM
Ao
DIM
B
DIM
Bo
DIM F
DIM Ko
DIM
P1
DIM W
www.national.com
8
Physical Dimensions inches (millimeters) unless otherwise noted
*
Suffix indicates number of units. See Ordering Information on first page.
5-Pin SOT Package
Order Number LMC7215IM5X, LMC7225IM5X, LMC7215IM5 or LMC7225IM5
NS Package Number MA05A
9
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Pin Small Outline Package
Order Number LMC7215IM, LMC7225IM, LMC7215IMX or LMC7225IMX
NS Package Number M08A
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
National Semiconductor
Europe
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
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Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
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Email: europe.support@nsc.com
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Français Tel: +33 (0) 1 41 91 8790
Email: ap.support@nsc.com
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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Products
Products > Analog - Comparators > LMC7215
LMC7215 Product Folder
Micro-Power, Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and
TinyPak Package
Generic P/N 7215
General
Description
Package
& Models
Samples
& Pricing
Design
Tools
Features
Datasheet
Parametric Table
Parametric Table
Input Range
Number of Channels
1
R-R Input
Response Time, typ (us)
Supply Voltage, min (Volt)
Supply Voltage, max (Volt)
24
Output Type
Push Pull
2
Output Current, typ (mA)
Vos, Room max (mV)
Input Bias Current, max (nA)
Special Functions
30
6
8
Supply Current per Channel, typ (mA)
.0007
1
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General Description
The LMC7215/LMC7225 are ultra low power comparators with a maximum of 1 µA power supply current.
They are designed to operate over a wide range of supply voltages, from 2V to 8V.
The LMC7215/LMC7225 have a greater than rail-to-rail common mode voltage range. This is a real
advantage in single supply applications.
The LMC7215 features a push-pull output stage. This feature allows operation with absolute minimum
amount of power consumption when driving any load.
The LMC7225 features an open drain output. By connecting an external resistor, the output of the
comparator can be used as a level shifter to any desired voltage to as high as 15V.
The LMC7215/LMC7225 are designed for systems where low power consumption is the critical parameter.
Guaranteed operation over the full supply voltage range of 2.7V to 5V and rail-to-rail performance makes
this comparator ideal for battery-powered applications.
Features
(Typical unless otherwise noted)
●
●
●
●
●
Ultra low power consumption 0.7 µA
Wide range of supply voltages 2V to 8V
Input common-mode range beyond V+ and V-
Open collector and push-pull output
High output current drive: (@ VS = 5V) 45 mA
●
Propagation delay (@ VS = 5V, 10 mV overdrive) 25 µs
●
●
Tiny SOT23-5 package
Latch-up resistance >300 mA
Applications
●
●
●
●
●
●
●
Laptop computers
Mobile phones
Metering systems
Hand-held electronics
RC timers
Alarm and monitoring circuits
Window comparators, multivibrators
Design Tools
Title
Size in Kbytes Date
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Download
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Amplifiers Selection Guide
software for Windows
View
12-Jun-2002
7 Kbytes
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Products > Analog - Comparators > LMC7225
LMC7225 Product Folder
Micro-Power, Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and
TinyPak Package
Generic P/N 7225
General
Description
Package
& Models
Samples
& Pricing
Design
Tools
Features
Datasheet
Parametric Table
Parametric Table
Input Range
Number of Channels
1
R-R Input
Response Time, typ (us)
Supply Voltage, min (Volt)
Supply Voltage, max (Volt)
24
Output Type
Open Drain
2
Output Current, typ (mA)
Vos, Room max (mV)
Input Bias Current, max (nA)
Special Functions
30
6
8
Supply Current per Channel, typ (mA)
.0007
1
-
Datasheet
Size in
Kbytes
Title
Date
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LMC7215 LMC7225 Micro-Power, Rail-to-Rail CMOS
Comparators with Push-Pull Open-Drain Outputs and
TinyPak Package
23-
Aug-
00
Receive via
Email
359
Kbytes
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LMC7215 LMC7225 Micro-Power, Rail-to-Rail CMOS
Comparators with Push-Pull Open-Drain Outputs and
TinyPak Package (JAPANESE)
297
Kbytes
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Package Availability, Models, Samples & Pricing
Budgetary
Pricing
Samples &
Electronic
Orders
Std
Pack
Size
Package
Models
SPICE
Package
Marking
Part Number
Status
Type Pins MSL
IBIS
Qty $US each
Samples
reel
of
1000
SOT-
23
Full
production
C03B
¢Z¢1¢T
MSL
LMC7225.MOD
N/A
LMC7225IM5
5
1K+ $0.5400
Buy Now
reel
of
3000
SOT-
23
Full
production
C03B
¢Z¢1¢T
MSL
LMC7225.MOD
LMC7225.MOD
LMC7225IM5X
LMC7225 MDA
5
N/A
N/A
1K+ $0.5400
tray
of
N/A
Full
production
Samples
Die
-
-
wafer
jar
of
Full
production
Wafer
LMC7225.MOD
LMC7225 MWA
N/A
N/A
General Description
The LMC7215/LMC7225 are ultra low power comparators with a maximum of 1 µA power supply current.
They are designed to operate over a wide range of supply voltages, from 2V to 8V.
The LMC7215/LMC7225 have a greater than rail-to-rail common mode voltage range. This is a real
advantage in single supply applications.
The LMC7215 features a push-pull output stage. This feature allows operation with absolute minimum
amount of power consumption when driving any load.
The LMC7225 features an open drain output. By connecting an external resistor, the output of the
comparator can be used as a level shifter to any desired voltage to as high as 15V.
The LMC7215/LMC7225 are designed for systems where low power consumption is the critical parameter.
Guaranteed operation over the full supply voltage range of 2.7V to 5V and rail-to-rail performance makes
this comparator ideal for battery-powered applications.
Features
(Typical unless otherwise noted)
●
●
●
●
●
Ultra low power consumption 0.7 µA
Wide range of supply voltages 2V to 8V
Input common-mode range beyond V+ and V-
Open collector and push-pull output
High output current drive: (@ VS = 5V) 45 mA
●
Propagation delay (@ VS = 5V, 10 mV overdrive) 25 µs
●
●
Tiny SOT23-5 package
Latch-up resistance >300 mA
Applications
●
●
●
●
●
●
●
Laptop computers
Mobile phones
Metering systems
Hand-held electronics
RC timers
Alarm and monitoring circuits
Window comparators, multivibrators
Design Tools
Title
Size in Kbytes Date
Receive via Email
Download
View Online
Amplifiers Selection Guide
software for Windows
View
12-Jun-2002
7 Kbytes
If you have trouble printing or viewing PDF file(s), see Printing Problems.
[Information as of 5-Aug-2002]
Search
Design
Purchasing
Quality
Company
Home
About Languages . Website Guide . About "Cookies" . National is QS 9000 Certified . Privacy/Security Statement .
Contact Us . Site Terms & Conditions of Use . Copyright 2002 © National Semiconductor Corporation . My Preferences .
Feedback
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LMC7215_06
Micro-Power, Rail-to-Rail CMOS Comparators with Push-Pull/Open-Drain Outputs and TinyPak⑩ Package
NSC
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