CMOS Comparator. LMC7221 Datasheet

LMC7221 Comparator. Datasheet pdf. Equivalent

LMC7221 Datasheet
Recommendation LMC7221 Datasheet
Part LMC7221
Description Tiny CMOS Comparator
Feature LMC7221; LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output September 1999 LMC7221 .
Manufacture National Semiconductor
Datasheet
Download LMC7221 Datasheet




National Semiconductor LMC7221
September 1999
LMC7221
Tiny CMOS Comparator with Rail-To-Rail Input and Open
Drain Output
General Description
The LM7221 is a micropower CMOS comparator available in
the space saving SOT23-5 package. This makes this com-
parator ideal for space and weight critical designs. The
LMC7221 is also available in the SO-8 package. The
LMC7221 is supplied in two offset voltage grades, 5 mV and
15 mV.
The open drain output can be pulled up with a resistor to a
voltage which can be higher or lower than the supply
voltage — this makes the part useful for mixed voltage sys-
tems.
For a tiny comparator with a push-pull output, please see the
LMC7211 datasheet.
Features
n Tiny SOT 23-5 package saves space
n Package is less than 1.43 mm thick
n Guaranteed specs at 2.7V, 5V, 15V supplies
n Typical supply current 7 µA at 5V
n Response time of 4 µs at 5V
n LMC7221 — open drain output
n Input common-mode range beyond V− and V+
n Low input current
Applications
n Mixed voltage battery powered products
n Notebooks and PDAs
n PCMCIA cards
n Mobile communications
n Alarm and security circuits
n Driving low current LEDs
n Direct sensor interface
Connection Diagrams
8–Pin SO-8
5-Pin SOT23-5
Top View
DS012346-1
Top View
DS012346-2
Ordering Information
Package
8-Pin SO-8
5-Pin SOT 23-5
Ordering
Information
LMC7221AIM
LMC7221AIMX
LMC7221BIM
LMC7221BIMX
LMC7221AIM5
LMC7221AIM5X
LMC7221BIM5
LMC7221BIM5X
NSC Drawing
Number
M08A
M08A
M08A
M08A
MA05A
MA05A
MA05A
MA05A
Package
Marking
LMC7221AIM
LMC7221AIM
LMC7221BIM
LMC7221BIM
C01A
C01A
C01B
C01B
Transport Media
Rails
2.5k Units Tape and Reel
Rails
2.5k Units Tape and Reel
1k Units Tape and Reel
3k Units Tape and Reel
1k Units Tape and Reel
3k Units Tape and Reel
© 1999 National Semiconductor Corporation DS012346
www.national.com



National Semiconductor LMC7221
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Differential Input Voltage
Voltage at Input
Voltage at Output Pin
Supply Voltage (V+–V)
Current at Input Pin
(Note 7)
Current at Output Pin
(Notes 3, 8)
Current at Power Supply Pin
Lead Temperature
2 kV
(VCC) +0.3V to (−VCC)−0.3V
(VCC) + 0.3V to (−VCC)−0.3V
15V
16V
±5 mA
±30 mA
40 mA
(soldering, 10 sec.)
Storage Temperature Range
Junction Temperature
(Note 4)
260˚C
−65˚C to +150˚C
150˚C
Operating Ratings (Note 1)
Supply Voltage
Junction Temperature Range
LMC7221AI, LMC7221BI
Thermal Resistance (θJA)
SO-8 Package,
8-Pin Surface Mount
M05A Package,
5-Pin Surface Mount
2.7 VCC 15V
−40˚C TJ +85˚C
180˚C/W
325˚C/W
2.7V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V, V= 0V, VCM = VO = V+/2. Boldface limits apply
at the temperature extremes
Typ LMC7221AI LMC7221BI
Symbol
Parameter
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
VOS Input Offset Voltage
3 5 15 mV
8 18 max
TCVOS
Input Offset Voltage
Temperature Drift
1.0
µV/˚C
Input Offset Voltage
(Note 10)
3.3
µV/Month
Average Drift
IB
IOS
CMRR
PSRR
Input Current
Input Offset Current
Common Mode
Rejection Ratio
Power Supply
0V VCM 2.7V
2.7V V+ 15V
0.04
0.02
75
80
pA
pA
dB
dB
Rejection Ratio
AV Voltage Gain
100
dB
CMVR
Input Common-Mode
CMRR > 55 dB
3.0
2.9
2.9
V
Voltage Range
2.7 2.7 min
CMRR > 55 dB
−0.3
−0.2
−0.2
V
VOL
Output Voltage Low
Iload = 2.5 mA
IS Supply Current
VOUT = low
0.0
0.2 0.3
0.4
7 12
14
0.0 max
0.3 V
0.4 max
12 µA
14 max
www.national.com
2



National Semiconductor LMC7221
5.0V and 15.0V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5.0V and 15V, V= 0V, VCM = VO = V+/2. Boldface lim-
its apply at the temperature extremes
Typ LMC7221AI LMC7221BI
Symbol
Parameter
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
VOS
TCVOS
Input Offset Voltage
Input Offset Voltage
Temperature Drift
Input Offset Voltage
Average Drift
V+ = 5V
V+ = 15V
V+ = 5V (Note 10)
V+ = 15V (Note 10)
3
1.0
4.0
3.3
4.0
5
8
15 mV
18 max
µV/˚C
µV/Month
IB
IOS
CMRR
Input Current
Input Offset Current
Common Mode
V+ = 5.0V
0.04
0.02
75
pA
pA
dB
PSRR
Rejection Ration
Power Supply
V+ = 15.0V
5V V+ 10V
82
80
dB
dB
Rejection Ratio
AV
CMVR
Voltage Gain
Input Common-Mode
Voltage Range
V+ = 5.0V
CMRR > 55 dB
100
5.3 5.2
5.0
dB
5.2 V
5.0 min
V+ = 5.0V
CMRR > 55 dB
−0.3
−0.2
−0.2
V
0.0 0.0 max
V+ = 15.0V
CMRR > 55 dB
15.3
15.2
15.2
V
15.0
15.0
min
V+ = 15.0V
CMRR > 55 dB
−0.3
−0.2
−0.2
V
0.0 0.0 max
VOL Output Voltage Low
V+ = 5V
Iload = 5 mA
V+ = 15V
0.2 0.40 0.40 mV
0.55
0.55
max
0.2 0.40 0.40 mV
IS Supply Current
Iload = 5 mA
VOUT = Low
0.55
0.55
max
7 14 14 µA
18 18 max
ISC
Short Circuit Current
Sinking (Note 8)
45
mA
Leakage Characteristics
TJ = 25˚C
Symbol
Parameter
Conditions
ILEAKAGE
Output Leakage
Current
V+ = 2.7V
VIN(+) = 0.5V
VIN(−) = 0V
VOUT = 15V
Typ
(Note 5)
0.1
LMC7221AI
Limit
(Note 6)
500
LMC7221BI
Limit
(Note 6)
500
Units
nA
3 www.national.com







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)